10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2014

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from __________ to __________

Commission File Number 1-4601

Schlumberger N.V.

(Schlumberger Limited)

(Exact name of registrant as specified in its charter)

Curaçao	52-0684746
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)
42, rue Saint-Dominique Paris, France	75007
5599 San Felipe, 17th Floor Houston, Texas, United States of America	77056
62 Buckingham Gate, London, United Kingdom	SW1E 6AJ
Parkstraat 83, The Hague, The Netherlands	2514 JG
(Addresses of principal executive offices)	(Zip Codes)

Registrant’s telephone number in the United States, including area code, is: (713) 513-2000

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock, par value $0.01 per share	New York Stock Exchange Euronext Paris The London Stock Exchange SIX Swiss Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES þ NO ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. YES ¨ NO þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES þ NO ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files.) YES þ NO ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer þ Accelerated filer ¨ Non-accelerated filer ¨ Smaller reporting company ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). YES ¨ NO þ

As of June 30, 2014, the aggregate market value of the common stock of the registrant held by non-affiliates of the registrant was approximately $152.9 billion.

As of December 31, 2014, the number of shares of common stock outstanding was 1,275,312,404.

DOCUMENTS INCORPORATED BY REFERENCE

Certain information required to be furnished pursuant to Part III of this Form 10-K is set forth in, and is hereby incorporated by reference herein from, Schlumberger’s definitive proxy statement for its 2015 Annual General Meeting of Stockholders, to be filed by Schlumberger with the Securities and Exchange Commission pursuant to Regulation 14A within 120 days after December 31, 2014 (the “2015 Proxy Statement”).

SCHLUMBERGER LIMITED

Table of Contents

Form 10-K

		Page
PART I
Item 1.	Business	3
Item 1A.	Risk Factors	7
Item 1B.	Unresolved Staff Comments	9
Item 2.	Properties	9
Item 3.	Legal Proceedings	10
Item 4.	Mine Safety Disclosures	10
PART II
Item 5.	Market for Schlumberger’s Common Stock, Related Stockholder Matters and Issuer Purchases of Equity Securities	11
Item 6.	Selected Financial Data	13
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	14
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	27
Item 8.	Financial Statements and Supplementary Data	30
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	64
Item 9A.	Controls and Procedures	64
Item 9B.	Other Information	64
PART III
Item 10.	Directors, Executive Officers and Corporate Governance of Schlumberger	65
Item 11.	Executive Compensation	65
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	65
Item 13.	Certain Relationships and Related Transactions, and Director Independence	65
Item 14.	Principal Accounting Fees and Services	65
PART IV
Item 15.	Exhibits and Financial Statement Schedules	66
	Signatures	67
	Certifications

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PART I

Item 1. Business.

All references in this report to “Registrant,” “Company,” “Schlumberger,” “we” or “our” are to Schlumberger Limited (Schlumberger N.V., incorporated in Curaçao) and its consolidated subsidiaries.

Founded in 1926, Schlumberger is the world’s leading supplier of technology, integrated project management and information solutions to the international oil and gas exploration and production industry. Having invented wireline logging as a technique for obtaining downhole data in oil and gas wells, Schlumberger today provides the industry’s widest range of products and services from exploration through production. As of December 31, 2014, the Company employed approximately 120,000 people of over 140 nationalities operating in approximately 85 countries. Schlumberger has principal executive offices in Paris, Houston, London and The Hague.  

Schlumberger operates in each of the major oilfield service markets, managing its business through three Groups: Reservoir Characterization, Drilling and Production.  Each Group consists of a number of technology-based service and product lines, or Technologies.  These Technologies cover the entire life cycle of the reservoir and correspond to a number of markets in which Schlumberger holds leading positions.  The business is also reported through four geographic Areas: North America, Latin America, Europe/CIS/Africa and Middle East & Asia. Within these Areas, a network of GeoMarket* regions provides logistical, technical and commercial coordination.

The role of the Groups and Technologies is to ensure that Schlumberger provides the best possible service to customers and that it remains at the forefront of technology development.  The Groups and Technologies are collectively responsible for driving excellence in execution throughout their businesses, overseeing operational processes, resource allocation, personnel and delivering superior financial results. The GeoMarket structure offers customers a single point of contact at the local level for field operations and brings together geographically focused teams to meet local needs and deliver customized solutions. The Areas and GeoMarkets are responsible for providing the most efficient and cost effective support possible to the operations.

The Groups are as follows:

Reservoir Characterization Group – Consists of the principal Technologies involved in finding and defining hydrocarbon resources.  These include WesternGeco, Wireline, Testing Services, Schlumberger Information Solutions (SIS) and PetroTechnical Services.  WesternGeco seismic acquisition services and PetroTechnical Services interpretation solutions combine to provide the industry’s most extensive multiclient library.

· WesternGeco is a leading geophysical services supplier, providing comprehensive worldwide reservoir imaging, monitoring and development services.  WesternGeco provides increasingly accurate measurements and images of subsurface geology and rock properties for both customer proprietary and multiclient surveys.

· Wireline provides the information necessary to evaluate subsurface formation rocks and fluids to plan and monitor well construction, and to monitor and evaluate well production.  Wireline offers both openhole and cased-hole services including wireline perforating.

· Testing Services provides exploration and production pressure and flow-rate measurement services both at the surface and downhole.  The Technology also provides tubing-conveyed perforating services.

· Schlumberger Information Solutions sells proprietary software and provides consulting, information management and IT infrastructure services that support core oil and gas industry operational processes.

· PetroTechnical Services supplies interpretation and integration of all exploration and production data types, as well as expert consulting services for reservoir characterization, field development planning production enhancement and multi-disciplinary reservoir and production solutions.  PetroTechnical Services offers the industry’s most extensive multiclient data library and provides industry petrotechnical training solutions.

Drilling Group – Consists of the principal Technologies involved in the drilling and positioning of oil and gas wells and comprises Bits & Advanced Technologies, M-I SWACO, Geoservices, Drilling & Measurements, Drilling Tools & Remedial, Saxon Rig Services and Integrated Project Management well construction projects.

· Bits & Advanced Technologies designs, manufactures and markets roller cone and fixed cutter drill bits for all environments. The drill bits include designs for premium market segments where faster penetration rates and increased footage provide significant economic benefits in lowering overall well costs.  The technologies leverage proprietary modeling and simulation software for the design of application-specific bits and cutting structures.

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· M-I SWACO is the leading supplier of drilling fluid systems engineered to improve drilling performance by anticipating fluids-related problems, fluid systems and specialty equipment designed to optimize wellbore productivity and production technology solutions formulated to maximize production rates. M-I SWACO also provides engineered managed pressure drilling and underbalanced drilling solutions, as well as environmental services and products to safely manage waste volumes generated in both drilling and production operations.

· Geoservices supplies mud logging services for geological and drilling surveillance.

· Drilling & Measurements provides directional drilling, measurement-while-drilling and logging-while-drilling services for all well profiles as well as engineering support.

· Drilling Tools & Remedial provides a wide variety of bottom hole assembly drilling tools, borehole enlargement technologies and impact tools, as well as a comprehensive collection of tubulars and tubular services for oil and gas drilling operations.

· Saxon Rig Services provides land drilling and related support services.

Production Group – Consists of the principal Technologies involved in the lifetime production of oil and gas reservoirs and includes Well Services, Completions, Artificial Lift, Well Intervention, Water Services and Schlumberger Production Management field production projects.

· Well Services provides services used during oil and gas well drilling and completion as well as those used to maintain optimal production throughout the life of a well. The services include pressure pumping, well cementing and stimulation operations as well as intervention activities.

· Completions supplies well completion services and equipment that include packers, safety valves, sand control technology as well as a range of intelligent well completions technology and equipment.

· Artificial Lift provides production equipment and optimization services using electrical submersible pumps, gas lift equipment, rod lift systems, progressing cavity pumps and surface horizontal pumping systems.

· Well Intervention develops coiled tubing equipment and services and provides slickline services for downhole mechanical well intervention, reservoir monitoring and downhole data acquisition.

· Water Services specializes in the development, management and environmental protection of water resources.

Schlumberger has a 40% equity ownership interest in OneSubsea^TM, a joint venture with Cameron International Corporation (“Cameron”).  The joint venture manufactures and develops products, systems and services for the subsea oil and gas market.  Schlumberger’s 40% share of the net income of the joint venture is reflected in the results of the Production Group.

Schlumberger also offers customers its services through business models known as Integrated Project Management (IPM), for well construction projects, and Schlumberger Production Management (SPM), for field production projects. These models combine the required services and products of the Technologies with drilling rig management, specialized engineering and project management expertise to provide a complete solution to well construction and production improvement.

IPM projects are typically of multiyear duration and include start-up costs and significant third-party components that cover services Schlumberger does not provide directly.  Projects may be fixed price in nature and may contain penalties for non-performance.  

SPM commercial arrangements create alignment between Schlumberger and the asset holder and/or the operator whereby Schlumberger receives remuneration in line with its value creation.  These projects are generally focused on developing and co-managing production of Schlumberger’s customers’ assets under long-term agreements.  Schlumberger will invest its own services and products, and in some cases cash, into the field development activities and operations.  Although in certain arrangements Schlumberger is paid for a portion of the services or products it provides, generally Schlumberger will not be paid at the time of providing its services or upon delivery of its products.  Instead, Schlumberger is generally compensated based upon cash flow generated or on a fee-per-barrel basis for any incremental production Schlumberger helps deliver above a mutually agreed baseline.

Supporting the Technologies is a global network of research and engineering centers. Through this organization, Schlumberger is committed to advanced technology programs that enhance oilfield efficiency, lower finding and producing costs, improve productivity, maximize reserve recovery and increase asset value while accomplishing these goals in a safe and environmentally sound manner.

Managed outside the Group structure is Schlumberger Business Consulting, which helps oil and gas companies achieve fast and sustainable performance improvements.  

Schlumberger primarily uses its own personnel to market its offerings. The customer base, business risks and opportunities for growth are essentially uniform across all services. There is a sharing of manufacturing and engineering facilities as well as research centers, and the labor force is interchangeable. Technological innovation, quality of service and price differentiation are the principal methods of competition, which varies geographically with respect to the different services offered. While there are numerous competitors, both large and small, Schlumberger believes that it is an industry leader in providing geophysical services, wireline logging, well testing,

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drilling and completion fluids, solids and waste management, coiled-tubing, drill bits, measurement-while-drilling, logging-while-drilling, directional drilling services and mud logging. A large proportion of Schlumberger offerings is non-rig related; consequently, revenue does not necessarily correlate to the rig count.

GENERAL

Intellectual Property

Schlumberger owns and controls a variety of intellectual property, including but not limited to patents, proprietary information and software tools and applications that, in the aggregate, are material to Schlumberger’s business. While Schlumberger seeks and holds numerous patents covering various products and processes, no particular patent or group of patents is considered material to Schlumberger’s business.

Seasonality

Seasonal changes in weather and significant weather events can temporarily affect the delivery of oilfield services. For example, the spring thaw in Canada and consequent road restrictions can affect activity levels, while the winter months in the North Sea, Russia and China can produce severe weather conditions which typically result in temporarily reduced levels of activity. In addition, hurricanes and typhoons can disrupt coastal and offshore operations. Furthermore, customer spending patterns for multiclient data, software and other oilfield services and products generally result in higher activity in the fourth quarter of each year as clients seek to utilize their annual budgets.

Customers and Backlog of Orders

For the year ended December 31, 2014, no single customer exceeded 10% of consolidated revenue. Other than WesternGeco, Schlumberger has no significant backlog due to the nature of its businesses. The WesternGeco backlog, which is based on signed contracts with customers, was $0.7 billion at December 31, 2014 ($0.9 billion at December 31, 2013).

Financial Information

Financial information by business segment and geographic area for the years ended December 31, 2014, 2013 and 2012 is provided in Note 17 of the Consolidated Financial Statements.

Executive Officers of Schlumberger

The following table sets forth, as of January 29, 2015, the names and ages of the executive officers of Schlumberger, including all offices and positions held by each for at least the past five years.

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Name	Age	Current Position and Five-Year Business Experience
Paal Kibsgaard	47	Chief Executive Officer, since August 2011; Director since April 2011; Chief Operating Officer, February 2010 to July 2011; President Reservoir Characterization Group, May 2009 to February 2010.
Simon Ayat	60	Executive Vice President and Chief Financial Officer, since March 2007.
Alexander Juden	54	Secretary and General Counsel, since April 2009.
Ashok Belani	56	Executive Vice President, Technology, since January 2011; President, Reservoir Characterization Group, February 2010 to August 2011; Vice President and Chief Technology Officer, April 2006 to February 2010.
Jean-Francois Poupeau	53	Executive Vice President Corporate Development and Communications, since June 2012; President, Drilling Group, May 2010 to June 2012; President, Drilling & Measurements, July 2007 to April 2010.
Khaled Al Mogharbel	44	President, Drilling Group, since July 2013; President, Middle East, August 2011 to June 2013; Project – Gulfsands Petroleum – Syria, July 2009 to July 2011.
Stephane Biguet	46	Vice President Controller, Operations & Integration, since November  2013; Vice President, Global Shared Services Organization, August 2011 to October 2013; Mergers and Acquisitions Director, February 2011 to July 2011; Controller, Reservoir Characterization Group, October 2008 to July 2011.
Mark Danton	58	Vice President – Director of Taxes, since January 1999.
Simon Farrant	50	Vice President, Investor Relations, since February 2014; Special Projects Manager, October 2013 to January 2014; GeoMarket Manager, North Sea, April 2012 to September 2013; Integration Manager, Smith Merger, April 2010 to April 2012; Portfolio Manager, Mergers & Acquisitions, July 2004 to March 2010.
Sherif Foda	45	President, Production Group, since July 2013; President, Europe and Africa, June 2011 to June 2013; Saudi Arabia and Bahrain GeoMarket Manager, June 2009 to June 2011.
Aaron Gatt Floridia	46	President, Reservoir Characterization Group, since August 2011; President Middle East, May 2009 to July 2011.
Howard Guild	43	Chief Accounting Officer, since July 2005.
Imran Kizilbash	48	Vice President and Treasurer, since November 2013; Controller, Operations & Integration, July 2013 to October 2013; Controller, Operations, January 2011 to June 2013; Controller, Schlumberger Limited, May 2009 to January 2011.
Gerard Martellozo	59	Vice President Human Resources, since June 2014; Senior Advisor to the CEO, August 2012 to May 2014; Human Resources Manager, Drilling Group, May 2010 to July 2012; Human Resources Manager, Reservoir Characterization Group, May 2009 to April 2010.
Patrick Schorn	46	President, Operations and Integration, since July 2013; President, Production Group, January 2011 to June 2013; President Well Services, May 2008 to January 2011.

Available Information

The Schlumberger Internet website is www.slb.com. Schlumberger uses its Investor Relations website, www.slb.com/ir, as a routine channel for distribution of important information, including news releases, analyst presentations, and financial information. Schlumberger makes available free of charge on or through its Investor Relations website at www.slb.com/ir access to its Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, its Proxy Statements and Forms 3, 4 and 5

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filed on behalf of directors and executive officers, and amendments to each of those reports, as soon as reasonably practicable after such material is filed with or furnished to the Securities and Exchange Commission (“SEC”). Alternatively, you may access these reports at the SEC’s Internet website at www.sec.gov. Copies are also available, without charge, from Schlumberger Investor Relations, 5599 San Felipe, 17^th Floor, Houston, Texas 77056.  Unless expressly noted, the information on our website or any other website is not incorporated by reference in this Form 10-K and should not be considered part of this Form 10-K or any other filing Schlumberger makes with the SEC.

Item 1A. Risk Factors.

The following discussion of risk factors known to us contains important information for the understanding of our “forward-looking statements,” which are discussed immediately following Item 7A. of this Form 10-K and elsewhere. These risk factors should also be read in conjunction with Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, and the Consolidated Financial Statements and related notes included in this Form 10-K.

We urge you to consider carefully the risks described below, as well as in other reports and materials that we file with the SEC and the other information included or incorporated by reference in this Form 10-K. If any of the risks described below or elsewhere in this Form 10-K were to materialize, our business, financial condition, results of operations, cash flows or prospects could be materially adversely affected. In such case, the trading price of our common stock could decline and you could lose part or all of your investment. Additional risks and uncertainties not currently known to us or that we currently deem immaterial may also materially adversely affect our financial condition, results of operations and cash flows.

Demand for the majority of our services is substantially dependent on the levels of expenditures by the oil and gas industry. A substantial or an extended decline in oil and gas prices could result in lower expenditures by the oil and gas industry, which could have a material adverse effect on our financial condition, results of operations and cash flows.

Demand for the majority of our services depends substantially on the level of expenditures by the oil and gas industry for the exploration, development and production of oil and natural gas reserves. These expenditures are generally dependent on the industry’s view of future oil and natural gas prices and are sensitive to the industry’s view of future economic growth and the resulting impact on demand for oil and natural gas. Declines, as well as anticipated declines, in oil and gas prices could also result in project modifications, delays or cancellations, general business disruptions, and delays in payment of, or nonpayment of, amounts that are owed to us. These effects could have a material adverse effect on our financial condition, results of operations and cash flows.

The prices for oil and natural gas have historically been volatile and can be affected by a variety of factors, including:

● demand for hydrocarbons, which is affected by general economic and business conditions;

● the ability or willingness of the Organization of Petroleum Exporting Countries (“OPEC”) to set and maintain production levels for oil;

● oil and gas production levels by non-OPEC countries;

● the level of excess production capacity;

● political and economic uncertainty and geopolitical unrest;

● the level of worldwide oil and gas exploration and production activity;

● access to potential resources;

● governmental policies and subsidies;

● the costs of exploring for, producing and delivering oil and gas;

● technological advances affecting energy consumption; and

● weather conditions.

The oil and gas industry has historically experienced periodic downturns, which have been characterized by diminished demand for oilfield services and downward pressure on the prices we charge. A significant downturn in the oil and gas industry could result in a reduction in demand for oilfield services and could adversely affect our financial condition, results of operations and cash flows.

A significant portion of our revenue is derived from our non-United States operations, which exposes us to risks inherent in doing business in each of the approximately 85 countries in which we operate.

Our non-United States operations accounted for approximately 71% of our consolidated revenue in 2014, 73% in 2013 and 72% in 2012. Operations in countries other than the United States are subject to various risks, including:

● political and economic conditions in certain areas;

● exposure to possible expropriation of our assets or other governmental actions;

● social unrest, acts of terrorism, war or other armed conflict;

● confiscatory taxation or other adverse tax policies;

● deprivation of contract rights;

● trade and economic sanctions or other restrictions imposed by the European Union, the United States or other countries;

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● restrictions under the United States Foreign Corrupt Practices Act or similar legislation in other countries;

● restrictions on the repatriation of income or capital;

● currency exchange controls;

● inflation; and

● currency exchange rate fluctuations and devaluations.

During the fourth quarter of 2014, Schlumberger completed the wind down of its operations in the Republic of Sudan.

As previously disclosed, during the second quarter of 2013, Schlumberger completed the wind down of its service operations in Iran. Prior to this, certain non-US subsidiaries of Schlumberger provided oilfield services to the National Iranian Oil Company and certain of its affiliates (“NIOC”). Schlumberger has reclassified the results of this business as a discontinued operation. All prior periods have been restated accordingly.

Schlumberger’s residual transactions or dealings with the government of Iran during 2014 consisted of payments of taxes and other typical governmental charges. Two non-US subsidiaries of Schlumberger maintained depository accounts at the Dubai branch of Bank Saderat Iran (“Saderat”), and at Bank Tejarat (“Tejarat”) in Tehran for the deposit by NIOC of amounts owed to non-US subsidiaries of Schlumberger for prior services rendered in Iran. One non-US subsidiary also maintains an account at Tejarat for payment of local expenses such as taxes and utilities. Schlumberger anticipates that it will discontinue its dealings with Saderat and Tejarat following the receipt of all amounts owed to Schlumberger for prior services rendered in Iran.

Environmental compliance costs and liabilities could reduce our earnings and cash available for operations.

We are subject to increasingly stringent laws and regulations relating to importation and use of hazardous materials, radioactive materials, chemicals and explosives and to environmental protection, including laws and regulations governing air emissions, hydraulic fracturing, water discharges and waste management. We incur, and expect to continue to incur, capital and operating costs to comply with environmental laws and regulations. The technical requirements of these laws and regulations are becoming increasingly complex, stringent and expensive to implement. These laws may provide for “strict liability” for remediation costs, damages to natural resources or threats to public health and safety. Strict liability can render a party liable for damages without regard to negligence or fault on the part of the party. Some environmental laws provide for joint and several strict liability for remediation of spills and releases of hazardous substances.

We use and generate hazardous substances and wastes in our operations. In addition, many of our current and former properties are, or have been, used for industrial purposes. Accordingly, we could become subject to material liabilities relating to the investigation and cleanup of potentially contaminated properties, and to claims alleging personal injury or property damage as the result of exposures to, or releases of, hazardous substances. In addition, stricter enforcement of existing laws and regulations, new laws and regulations, the discovery of previously unknown contamination or the imposition of new or increased requirements could require us to incur costs or become the basis of new or increased liabilities that could reduce our earnings and our cash available for operations.

We could be subject to substantial liability claims, which could adversely affect our financial condition, results of operations and cash flows.

The technical complexities of our operations expose us to a wide range of significant health, safety and environmental risks. Our offerings involve production-related activities, radioactive materials, chemicals, explosives and other equipment and services that are deployed in challenging exploration, development and production environments. An accident involving these services or equipment, or a failure of a product, could cause personal injury, loss of life, damage to or destruction of property, equipment or the environment, or suspension of operations. Our insurance may not protect us against liability for some kinds of events, including events involving pollution, or against losses resulting from business interruption. Moreover, we may not be able to maintain insurance at levels of risk coverage or policy limits that we deem adequate. Any damages caused by our services or products that are not covered by insurance, or are in excess of policy limits or are subject to substantial deductibles, could adversely affect our financial condition, results of operations and cash flows.

Demand for our products and services could be reduced by changes in governmental regulations or in the law.

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Existing or future legislation and regulations related to greenhouse gas emissions and climate change, as well as government initiatives to conserve energy or promote the use of alternative energy sources, may significantly curtail demand for and production of fossil fuels such as oil and gas in areas of the world where our customers operate and thus adversely affect future demand for our services. This may, in turn, adversely affect our financial condition, results of operations and cash flows.

Some international, national, state and local governments and agencies have also adopted laws and regulations or are evaluating proposed legislation and regulations that are focused on the extraction of shale gas or oil using hydraulic fracturing. Hydraulic fracturing is a stimulation treatment routinely performed on oil and gas wells in low-permeability reservoirs. Specially engineered fluids are pumped at high pressure and rate into the reservoir interval to be treated, causing cracks in the target formation. Proppant, such as sand of a particular size, is mixed with the treatment fluid to keep the cracks open when the treatment is complete. Future hydraulic fracturing-related legislation or regulations could limit or ban hydraulic fracturing, or lead to operational delays and increased costs, and therefore reduce demand for our pressure pumping services. If such additional international, national, state or local legislation or regulations are enacted, it could adversely affect our financial condition, results of operations and cash flows.

If we are unable to maintain technology leadership, this could adversely affect any competitive advantage we hold.

If we are unable to continue to develop and produce competitive technology or deliver it to our clients in a timely and cost-competitive manner in the various markets we serve, it could adversely affect our financial condition, results of operations and cash flows.

Limitations on our ability to protect our intellectual property rights, including our trade secrets, could cause a loss in revenue and any competitive advantage we hold.

Some of our products or services, and the processes we use to produce or provide them, have been granted patent protection, have patent applications pending or are trade secrets. Our business may be adversely affected if our patents are unenforceable, the claims allowed under our patents are not sufficient to protect our technology, our patent applications are denied, or our trade secrets are not adequately protected. Our competitors may be able to develop technology independently that is similar to ours without infringing on our patents or gaining access to our trade secrets, which could adversely affect our financial condition, results of operations and cash flows.

We may be subject to litigation if another party claims that we have infringed upon its intellectual property rights.

The tools, techniques, methodologies, programs and components we use to provide our services may infringe upon the intellectual property rights of others. Infringement claims generally result in significant legal and other costs and may distract management from running our core business. Royalty payments under licenses from third parties, if available, would increase our costs. Additionally, developing non-infringing technologies would increase our costs. If a license were not available, we might not be able to continue providing a particular service or product, which could adversely affect our financial condition, results of operations and cash flows.

Failure to obtain and retain skilled technical personnel could impede our operations.

We require highly skilled personnel to operate and provide technical services and support for our business. Competition for the personnel required for our businesses intensifies as activity increases. In periods of high utilization it may become more difficult to find and retain qualified individuals. This could increase our costs or have other adverse effects on our operations.

Severe weather conditions may affect our operations.

Our business may be materially affected by severe weather conditions in areas where we operate. This may entail the evacuation of personnel and stoppage of services. In addition, if particularly severe weather affects platforms or structures, this may result in a suspension of activities. Any of these events could adversely affect our financial condition, results of operations and cash flows.

Cyber attacks could affect our business.

If our systems for protecting against cybersecurity risks are circumvented or breached, this could result in the loss of our intellectual property or other proprietary information, including customer data, and disruption of our business operations.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

Schlumberger owns or leases numerous manufacturing facilities, administrative offices, service centers, research centers, data processing centers, mines, ore, drilling fluid and production chemical processing centers, sales offices and warehouses throughout the world. Schlumberger views its principal manufacturing, mining and processing facilities, research centers and data processing centers as its “principal owned or leased facilities.”

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The following sets forth Schlumberger’s principal owned or leased facilities:

Beijing, China; Clamart, France; Mumbai, India; Fuchinobe, Japan; Oslo and Stavanger, Norway; Singapore; Abingdon, Cambridge, Gatwick and Stonehouse, United Kingdom; Moscow, Russia; and within the United States: Boston, Massachusetts; Houston, Katy, Rosharon and Sugar Land, Texas; Battle Mountain, Nevada; Greybull, Wyoming and Florence, Kentucky.

Item 3. Legal Proceedings.

The information with respect to this Item 3. Legal Proceedings is set forth in Note 16 of the Consolidated Financial Statements.

Item 4. Mine Safety Disclosures.

The barite and bentonite mining operations of M-I LLC, an indirect wholly-owned subsidiary, are subject to regulation by the federal Mine Safety and Health Administration under the Federal Mine Safety and Health Act of 1977. Information concerning mine safety violations or other regulatory matters required by section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 to this Form 10-K.

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PART II

Item 5. Market for Schlumberger’s Common Stock, Related Stockholder Matters and Issuer Purchases of Equity Securities.

As of December 31, 2014, there were 21,348 stockholders of record. The principal United States market for Schlumberger’s common stock is the New York Stock Exchange (“NYSE”), where it is traded under the symbol “SLB,” although it is traded on other exchanges in and outside the United States, including the Euronext Paris, the London Stock Exchange and the SIX Swiss Exchange.

Common Stock, Market Prices and Dividends Declared per Share

Quarterly high and low prices for Schlumberger’s common stock as reported by the NYSE (composite transactions), together with dividends declared per share in each quarter of 2014 and 2013, were as follows:

	Price Range				Dividends Declared
	High		Low
2014
QUARTERS
First	$	98.45	$	85.77	$	0.4000
Second		118.13		96.66		0.4000
Third		118.76		100.30		0.4000
Fourth		102.40		78.47		0.4000
2013
QUARTERS
First	$	82.00	$	70.12	$	0.3125
Second		77.84		69.08		0.3125
Third		89.72		71.84		0.3125
Fourth		94.91		84.91		0.3125

There are no legal restrictions on the payment of dividends or ownership or voting of such shares, except as to shares held as treasury stock. Under current legislation, stockholders are not subject to any Curaçao withholding or other Curaçao taxes attributable to the ownership of such shares.

The following graph compares the cumulative total stockholder return on Schlumberger common stock, assuming reinvestment of dividends on the last day of the month of payment into common stock of Schlumberger, with the cumulative total return on the Standard & Poor’s 500 Index (S&P 500 Index) and the cumulative total return on the Philadelphia Oil Service Index (OSX) over the five-year period ended December 31, 2014. The stockholder return set forth below is not necessarily indicative of future performance. The following graph and related information shall not be deemed “soliciting material” or to be “filed” with the SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that Schlumberger specifically incorporates it by reference into such filing.

11

Comparison of five-year cumulative total return among

Schlumberger common stock, the S&P 500 Index and the

Philadelphia Oil Service Index (OSX)

Assumes $100 invested on December 31, 2009 in Schlumberger common stock, in the S&P 500 Index and in the Philadelphia Oil Service Index (OSX) and reinvestment of dividends on the last day of the month of payment.

Share Repurchases

On July 18, 2013, the Schlumberger Board of Directors approved a $10 billion share repurchase program for Schlumberger common stock, to be completed at the latest by June 30, 2018. Schlumberger is accelerating this share repurchase program with the aim of completing it in 2.5 years as compared to the original target of 5 years.

Schlumberger’s common stock repurchase program activity for the three months ended December 31, 2014 was as follows:

					(Stated in thousands, except per share amounts)
	Total number of shares purchased		Average price paid per share		Total number of shares purchased as part of publicly announced program		Maximum value of shares that may yet be purchased under the program
October 1 through October 31, 2014		3,720.5	$	95.68		3,720.5	$	4,344,679
November 1 through November 30, 2014		2,529.6	$	96.52		2,529.6	$	4,100,530
December 1 through December 31, 2014		5,891.7	$	84.07		5,891.7	$	3,605,238
		12,141.8	$	90.22		12,141.8

In connection with the exercise of stock options under Schlumberger’s incentive compensation plans, Schlumberger routinely receives shares of its common stock from optionholders in consideration of the exercise price of the stock options. Schlumberger does not view these transactions as requiring disclosure under this Item 5 as the number of shares of Schlumberger common stock received from optionholders is not material.

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Unregistered Sales of Equity Securities

None.

Item 6. Selected Financial Data.

The following selected consolidated financial data should be read in conjunction with both “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Item 8. Financial Statements and Supplementary Data” of this Form 10-K in order to understand factors, such as business combinations and charges and credits, which may affect the comparability of the Selected Financial Data:

	(Stated in millions, except per share amounts)
	Year Ended December 31,
	2014		2013		2012		2011		2010
Revenue	$	48,580	$	45,266	$	41,731	$	36,579	$	26,280
Income from continuing operations	$	5,643	$	6,801	$	5,230	$	4,516	$	4,048
Diluted earnings per share from continuing operations	$	4.31	$	5.10	$	3.91	$	3.32	$	3.21
Working capital	$	10,518	$	12,700	$	11,788	$	10,001	$	7,233
Total assets	$	66,904	$	67,100	$	61,547	$	55,201	$	51,767
Net debt (1)	$	5,387	$	4,443	$	5,111	$	4,850	$	2,638
Long-term debt	$	10,565	$	10,393	$	9,509	$	8,556	$	5,517
Schlumberger stockholders’ equity	$	37,850	$	39,469	$	34,751	$	31,263	$	31,226
Cash dividends declared per share	$	1.60	$	1.25	$	1.10	$	1.00	$	0.84

⁽¹⁾ “Net Debt” represents gross debt less cash, short-term investments and fixed income investments, held to maturity. Management believes that Net Debt provides useful information regarding the level of Schlumberger indebtedness by reflecting cash and investments that could be used to repay debt.

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis contains forward-looking statements, including, without limitation, statements relating to our plans, strategies, objectives, expectations, intentions and resources. Such forward-looking statements should be read in conjunction with our disclosures under “Item 1A. Risk Factors” of this Form 10-K.

Executive Overview

Revenue for 2014 reached a record $48.6 billion, up 7% and growing for the fifth consecutive year. In North America, revenue surged by $2.3 billion, or 16%, driven by strong activity both on land and offshore as well as by the penetration of innovative hydraulic stimulation technologies. International revenue increased by $1.2 billion, or 4%, on significant strength in the Middle East & Asia, despite considerable headwinds in the face of activity challenges, geopolitical unrest, falling oil prices and international sanctions elsewhere.

Oil markets remained relatively well-balanced during 2014 as increasing global production capacity almost matched increasing demand. Yet, after more than three years of remarkable stability, oil prices declined dramatically by more than 40% late in the year to end at their lowest levels since 2009. However, unlike the 2009 decline which was triggered by a global economic recession, the 2014 decline resulted from a higher market supply of oil that became increasingly evident as North American tight oil production continued to grow and OPEC shifted focus from protecting oil prices to protecting market share. At the same time, production recovered in countries that had suffered degrees of geopolitical disturbance, and the US dollar strengthened to further weaken overall commodity prices.

In natural gas markets, US prices reached multiyear highs in February 2014 on exceptionally cold weather and risks of local supply shortages. Storage, however, returned to historical average levels at the end of 2014 as sustained production growth in the Marcellus play and increasing associated gas production in US tight oil plays more than offset the impact of low activity levels in other unconventional plays. Overall, these increasing supplies more than met growing demand. Internationally, natural gas prices eased broadly in 2014 on mild temperatures in Europe, LNG capacity additions in the Pacific region, and the impact of weaker oil prices on oil-indexed natural gas pricing formulas.

Against this background, Schlumberger’s performance in 2014 was led by North America, where revenue grew by 16% on robust land activity, increased service intensity, market share gains and new technology penetration. Offshore operations, however, suffered from a number of operational delays that particularly affected drilling and exploration activity. The 4% growth in International revenue was led by activity in a number of key markets, both on land and offshore. Middle East & Asia revenue grew by 10%, driven by Saudi Arabia, Australia, the United Arab Emirates and Oman.  Revenue in Europe/CIS/Africa improved by 1%, led by the Sub-Saharan region on strong exploration and development activities in the Central West Africa, Angola and Continental Europe GeoMarkets. Norway also showed strong growth through market share gains and higher rig-related services for a number of customers. In Latin America, however, revenue slipped by 1% as strong activity in Venezuela and Ecuador was unable to compensate for lower activity and pricing in both Brazil and Mexico.

From a Group perspective, performance was led by the Drilling Group, mainly as result of robust demand for Drilling & Measurements services and M-I SWACO Technologies as activity strengthened in North America and Middle East & Asia. Rig revenue from the May 2014 acquisition of Saxon also contributed to Drilling Group growth. The Production Group benefitted from strong results in Well Services, where pressure pumping activity increased through market share gains, operational efficiency improvements and the introduction of new technology. Schlumberger Production Management grew as projects in Latin America, particularly in Ecuador, continued to progress ahead of plan. Production Group activity was also boosted by expansion in the Artificial Lift business as a number of regional acquisitions were added to the portfolio, both in operations and in equipment design and production. However, strength in the Drilling and Production Groups was offset by a slight fall in Reservoir Characterization Group revenue. While testing activity expanded on higher exploration work and software sales increased in all Areas, weakness in the seismic market lowered marine vessel utilization and reduced multiclient seismic data license sales.

As Schlumberger enters a challenging 2015, the reduction in commodity prices, which have resulted from the higher marketed supply of oil, raises short-term uncertainty as it relates to the spending and activity levels of our customers. However, Schlumberger believes that the oil markets are, in fact, relatively well-balanced and that increasing global production capacity is in line with the overall growth in demand resulting from the continuing global economic recovery. In the longer term, decline rates will impact production capacity, and weaker exploration will delay supply additions, the combination of which ultimately will lead to tighter market conditions and consequently drive increasing investment.

In this uncertain environment, Schlumberger continues to focus on the things it can control and has already restructured and resized the business to match the reduced activity levels it expects as 2015 develops.  These actions resulted in certain charges, which are described in detail in Note 3 to the reduced Consolidated Financial Statements, being recorded during the fourth quarter of 2014.

14

Fourth Quarter 2014 Results

Product Groups

		(Stated in millions)
	Fourth Quarter 2014						Third Quarter 2014
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	3,093		$	956		$	3,184		$	954
Drilling		4,658			966			4,821			1,045
Production		4,954			908			4,697			857
Eliminations & other		(64	)		(49	)		(56	)		(50	)
Pretax operating income					2,781						2,806
Corporate & other (1)					(221	)					(210	)
Interest income (2)					8						8
Interest expense (3)					(80	)					(84	)
Charges & credits (4)					(1,773	)					—
	$	12,641		$	715		$	12,646		$	2,520

Geographic Areas

		(Stated in millions)
	Fourth Quarter 2014					Third Quarter 2014
	Revenue		Income before taxes			Revenue		Income before taxes
North America	$	4,324	$	849		$	4,255	$	825
Latin America		2,053		429			2,036		446
Europe/CIS/Africa		3,063		683			3,303		774
Middle East & Asia		3,094		877			2,970		820
Eliminations & other		107		(57	)		82		(59	)
Pretax operating income				2,781					2,806
Corporate & other (1)				(221	)				(210	)
Interest income (2)				8					8
Interest expense (3)				(80	)				(84	)
Charges & credits (4)				(1,773	)				—
	$	12,641	$	715		$	12,646	$	2,520

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible assets and other nonoperating items.

⁽²⁾ Excludes interest income included in the segments’ income (fourth quarter 2014: $5 million; third quarter 2014: $5 million).

⁽³⁾ Excludes interest expense included in the segments’ income (fourth quarter 2014: $7 million; third quarter 2014: $6 million).

⁽⁴⁾ Charges and credits are described in detail in Note 3 to the Consolidated Financial Statements.

Fourth-quarter revenue of $12.6 billion was flat sequentially. North America revenue of $4.3 billion increased $69 million, or 2%, sequentially. International revenue of $8.2 billion decreased $98 million, or 1%, sequentially.

Sequentially, Reservoir Characterization Group revenue decreased 3%, to $3.1 billion, and Drilling Group revenue decreased 3%, to $4.7 billion. Production Group revenue increased 5% sequentially to $5.0 billion. The decrease in Reservoir Characterization Group revenue was primarily due to the seasonal drop in marine seismic activity in the North Sea and Eastern Canada.  Wireline revenue also decreased on lower exploration activity in Angola and seasonal activity and currency declines in Russia.  These sequential decreases were partially offset by year-end multiclient license and software sales. Drilling Group revenue decreased primarily on unfavorable currency effects and activity declines in Russia for Drilling & Measurements and M-I SWACO Technologies.  In Mexico, lower

15

Integrated Project Management (IPM) activity, due to budgetary constraints, also contributed to the decrease. The increase in Production Group revenue reflected stronger activity in Western Canada, higher uptake of technology, continued efficiency improvements, and improved pressure pumping logistics in North America land. Year-end sales of Completions and Artificial Lift products also contributed to the sequential increase.

Sequentially by Area, Middle East & Asia led the increase with revenue of $3.1 billion growing 4%, driven by record revenue in Saudi Arabia and Bahrain, increased activity in Kuwait and the United Arab Emirates, and year-end product and software sales across the Area. In Latin America, revenue of $2.1 billion grew by 1% on increased activity in Venezuela and Colombia, offset by decreased work scope in Mexico due to budgetary constraints. In Europe/CIS/Africa, revenue of $3.1 billion fell 7% due mainly to weakness in the ruble and the seasonal activity decline in Russia.  Following the peak summer drilling and exploration campaigns of the previous quarter, customer spending decelerated as oil prices weakened.  As a result, rig count reductions led to activity declines in Angola, Norway and the United Kingdom GeoMarkets. North America revenue of $4.3 billion increased 2% sequentially with land revenue up 5%.  Land revenue increased both in the US and Western Canada on higher pressure pumping activity, continued efficiency improvement, and higher uptake of new technology.  Fourth-quarter activity in the US Gulf of Mexico increased by 12% driven by year-end multiclient license sales and the resumption of operations after loop current disruptions in the third quarter. Eastern Canada revenue declined sequentially following completion of the season’s exploration program and marine seismic activity.

Sequentially, fourth-quarter pretax operating income of $2.8 billion was down 1%. International pretax operating income of $2.0 billion was down 2%, while North America pretax operating income of $849 million was up 3%.

Sequentially, pretax operating margin of 22.0% decreased 19 basis points (bps), as International Area pretax operating margin of 24.2% decreased 33 bps.  Middle East & Asia margin increased 71 bps to 28.3% while Latin America decreased 102 bps to 20.9% and Europe/CIS/Africa declined 112 bps to 22.3%.  The decline in International Area margin was primarily driven by an unfavorable revenue mix in the fourth quarter following the high-margin peak summer drilling and exploration campaigns of the third quarter. Unfavorable currency effects and activity declines in Russia also contributed to margin contraction. North America pretax operating margin increased 24 bps sequentially, to 19.6%, on increased Western Canada activity, continued efficiency gains, and increased penetration of new technology. North America offshore margin improved on a better revenue mix from high-margin multiclient license sales. Sequentially by segment, Reservoir Characterization Group pretax operating margin of 30.9% was 95 bps higher on a favorable revenue mix from high-margin multiclient license and software sales while Drilling Group pretax operating margin declined 94 bps to 20.7% mainly due to currency and activity declines in Russia. Reservoir Production Group pretax operating margin of 18.3% was flat sequentially as pricing pressure, particularly in the US land market, was offset by improved activity in Western Canada and by improved efficiency, better fleet utilization, and recovery of logistical costs in the North America land markets.

Reservoir Characterization Group

Fourth-quarter revenue of $3.1 billion declined 3% sequentially. Pretax operating income of $956 million was flat sequentially. The decrease in revenue was primarily driven by the seasonal drop in marine seismic activity in the North Sea and Eastern Canada.  Wireline revenue also decreased on lower exploration activity in Angola and seasonal activity and currency declines in Russia.  These sequential decreases were partially offset by year-end multiclient license and software sales.

Sequentially, pretax operating margin of 30.9% increased 95 bps. This increase reflected a favorable revenue mix from high-margin multiclient license and software sales.

Drilling Group

Fourth-quarter revenue of $4.7 billion declined 3% sequentially. Pretax operating income of $966 million was 8% lower sequentially.

These decreases were primarily due to the unfavorable currency effects and activity declines in Russia for Drilling & Measurements and M-I SWACO Technologies.  In Mexico, lower IPM activity due to budgetary constraints also contributed to the decrease.

Sequentially, pretax operating margin declined 94 bps, to 20.7%, mainly due to currency and activity declines in Russia.

Production Group

Fourth-quarter revenue of $5.0 billion increased 5% sequentially. Pretax operating income of $908 million was 6% higher sequentially.  Sequentially, revenue increased due to improved activity in Western Canada, higher uptake of new technology, continued efficiency improvements, and improved logistics in pressure pumping in North America land. Year-end sales of Completions and Artificial Lift products also contributed to the sequential increase.

Sequentially, pretax operating margin of 18.3% was flat as pricing pressure, particularly in the US land market, was offset by an improved volume of activity in Western Canada and by improved efficiency, better fleet utilization, and recovery of logistical costs in the North America land markets.

16

Full-Year 2014 Results

Product Groups

		(Stated in millions)
	2014						2013
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	12,224		$	3,607		$	12,463		$	3,660
Drilling		18,462			3,872			17,099			3,293
Production		18,111			3,227			15,927			2,619
Eliminations & other		(217	)		(130	)		(223	)		(228	)
Pretax operating income					10,576						9,344
Corporate & other (1)					(848	)					(726	)
Interest income (2)					31						22
Interest expense (3)					(347	)					(369	)
Charges & credits (4)					(1,773	)					420
	$	48,580		$	7,639		$	45,266		$	8,691

Geographic Areas

		(Stated in millions)
	2014					2013
	Revenue		Income before taxes			Revenue		Income before taxes
North America	$	16,151	$	3,057		$	13,897	$	2,735
Latin America		7,699		1,639			7,754		1,589
Europe/CIS/Africa		12,515		2,765			12,411		2,593
Middle East & Asia		11,875		3,273			10,767		2,697
Eliminations & other		340		(158	)		437		(270	)
Pretax operating income				10,576					9,344
Corporate & other (1)				(848	)				(726	)
Interest income (2)				31					22
Interest expense (3)				(347	)				(369	)
Charges & credits (4)				(1,773	)				420
	$	48,580	$	7,639		$	45,266	$	8,691

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible assets and other nonoperating items.

⁽²⁾ Excludes interest income included in the segments’ income (2014: $20 million; 2013: $11 million).

⁽³⁾ Excludes interest expense included in the segments’ income (2014: $22 million; 2013: $22 million).

⁽⁴⁾ Charges and credits are described in detail in Note 3 to the Consolidated Financial Statements.

Full-year 2014 revenue of $48.6 billion grew $3.3 billion, or 7%, versus the same period last year with International revenue of $32.1 billion increasing $1.2 billion, or 4%, and North America revenue of $16.2 billion growing $2.3 billion, or 16%.

Internationally, higher activities in a number of GeoMarkets, both offshore and in key land markets, contributed to the increase.  The increase was led by the Middle East & Asia which increased 10%, mainly from robust drilling and exploration results in Saudi Arabia, Australia, the United Arab Emirates and Oman.  Europe/CIS/Africa increased 1%, led by the Sub-Saharan Africa region on strong development and exploration activities, particularly in Central West Africa, Angola and Continental Europe GeoMarkets.  Norway also experienced strong growth driven by market share gains and higher rig-related services for a number of customers.  Latin

17

America, however, decreased 1% primarily as a result of lower activity and pricing in Brazil and Mexico which was partially offset by strong activity in Argentina and Ecuador.

North America revenue increased 16% mainly due to land which was up 22%, while offshore was down 3%.  The increase in land was driven by market share gains in pressure pumping, artificial lift and drilling services.   The pressure pumping growth was augmented by improvements in operational efficiency and the introduction of new technologies.  The decrease in offshore revenue was attributable to lower drilling and exploration activities, and due to a series of operational delays that impacted several product lines earlier in the year combined with lower multiclient sales.  

Full-year 2014 pretax operating income of $10.6 billion grew $1.2 billion, or 13%, versus the same period last year with International pretax operating income of $7.7 billion increasing 12% and North America pretax operating income of $3.1 billion increasing 12%.

Full-year 2014 pretax operating margin of 21.8% increased 113 bps compared to 2013, as International Area pretax operating margin was up 168 bps, to 23.9%, while North America pretax operating margin was down 75 bps, to 18.9%.  The increase in International Area margins reflected increased high-margin exploration activities, market share gains, growth in accretive integration-related activities and premium pricing on new technology introductions.  The North America margin contraction reflected pressure pumping commodity inflation.

Reservoir Characterization Group

Full-year 2014 revenue of $12.2 billion was down 2% compared to 2013.  Revenue increased in Testing Services, from higher offshore exploration, and Schlumberger Information Solutions, driven by software sales across all international areas.  However, these increases were offset by lower WesternGeco marine vessel utilization and reduced multiclient seismic sales.

Year-on-year, pretax operating margin increased 14 bps, to 29.5%, largely due to the higher-margin exploration activities that benefited Wireline Technologies and Testing Services.  Higher margin software sales also contributed to the improvement.   These increases were partially offset by lower profitability in WesternGeco due to lower vessel utilization and lower PetroTechnical Services multiclient seismic sales.

Drilling Group

Full-year 2014 revenue of $18.5 billion was 8% higher than the 2013, primarily due to the robust demand for Drilling & Measurements services and M-I SWACO Technologies as activity strengthened in the North America and Middle East & Asia Areas.  Rig revenue from the May 2014 acquisition of Saxon also contributed to the growth.

Year-on-year, pretax operating margin increased 171 bps, to 21.0%, primarily due to the increase in higher-margin exploration activities of Drilling & Measurements in North America offshore and in the international markets.  Improved profitability on Integrated Project Management activities also contributed to the margin increase.

Production Group

Full-year 2014 revenue of $18.1 billion increased 14% compared to 2013, primarily from Well Services pressure pumping technologies driven by market share gains, improvements in operational efficiency and the introduction of new technologies.  Schlumberger Production Management (SPM) revenue grew as projects in Latin America continued to progress ahead of work plans.  Revenue from the expanding artificial lift business also contributed to the year-on-year growth.  

Year-on-year, pretax operating margin increased 138 bps, to 17.8%, mainly on improved profitability for Well Services and Well Intervention, particularly in the International Areas.  SPM activities also contributed to the margin expansion.  However, these improvements were partially offset by the decrease in margins in North America due to pressure pumping commodity cost inflation.

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Full-Year 2013 Results

Product Groups

		(Stated in millions)
	2013						2012
	Revenue			Income before taxes			Revenue			Income before taxes
Reservoir Characterization	$	12,463		$	3,660		$	11,360		$	3,080
Drilling		17,099			3,293			15,691			2,778
Production		15,927			2,619			14,802			2,327
Eliminations & other		(223	)		(228	)		(122	)		(68	)
Pretax operating income					9,344						8,117
Corporate & other (1)					(726	)					(696	)
Interest income (2)					22						30
Interest expense (3)					(369	)					(331	)
Charges & credits (4)					420						(161	)
	$	45,266		$	8,691		$	41,731		$	6,959

Geographic Areas

		(Stated in millions)
	2013					2012
	Revenue		Income before taxes			Revenue		Income before taxes
North America	$	13,897	$	2,735		$	13,535	$	2,737
Latin America		7,754		1,589			7,554		1,387
Europe/CIS/Africa		12,411		2,593			11,510		2,253
Middle East & Asia		10,767		2,697			8,717		1,914
Eliminations & other		437		(270	)		415		(174	)
Pretax operating income				9,344					8,117
Corporate & other (1)				(726	)				(696	)
Interest income (2)				22					30
Interest expense (3)				(369	)				(331	)
Charges & credits (4)				420					(161	)
	$	45,266	$	8,691		$	41,731	$	6,959

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible assets and other nonoperating items.

⁽²⁾ Excludes interest income included in the segments’ income (2013: $11 million; 2012: $- million).

⁽³⁾ Excludes interest expense included in the segments’ income (2013: $22 million; 2012: $9 million).

⁽⁴⁾ Charges and credits are described in detail in Note 3 to the Consolidated Financial Statements.

Full-year 2013 revenue of $45.3 billion increased 8% versus the same period last year with International revenue 11% higher and North America revenue increasing 3%.

Internationally, higher exploration and development activities in a number of GeoMarkets, both offshore and in key land markets, contributed to the increase.  The increase was led by the Middle East & Asia, which increased 24%, mainly from robust results across a diversified portfolio of projects and activities in Saudi Arabia, Iraq, and United Arab Emirates; increased seismic surveys across Asia; and sustained land and offshore drilling activity in the Australasia and China GeoMarkets.  Europe/CIS/Africa increased 8%, led by the Russia and Central Asia region on strong land activity in West Siberia and robust offshore projects in Sakhalin.  The Sub-

19

Saharan Africa region increased on strong development, exploration and seismic activities as well.  Latin America was 3% higher, mainly due to solid progress on an SPM project in Ecuador and strong IPM results in Argentina.

North America growth was driven by increased offshore revenue as a result of higher drilling and exploration activities.  This increase was largely offset by a decline in land as a result of a reduction in rig count and pricing weakness in the areas of drilling, stimulation and wireline, although the downward pricing trend slowed during the second and third quarters.  

Full-year 2013 pretax operating income of $9.3 billion increased 15% versus the same period last year as international pretax operating income of $6.88 billion increased 24%, while North America pretax operating income of $2.7 billion was flat.

Pretax operating margin of 20.6% increased 119 bps, as international pretax operating margin expanded 225 bps to 22.2%, while North America pretax operating margin declined 55 bps to 19.7%.  The expansion in international margins was due to increased high-margin exploration, seismic and deepwater activities, while the North American margin contraction was due to continued pricing pressure.

Reservoir Characterization Group

Full-year revenue of $12.5 billion was 10% higher than the same period last year led by Testing Services, WesternGeco, Wireline and SIS Technologies, primarily due to market share gains and higher exploration activity in both offshore and key international land markets.

Pretax operating margin increased 226 bps to 29.4% largely due to the higher-margin exploration activities that benefited Testing Services and Wireline Technologies.

Drilling Group

Full-year revenue of $17.1 billion was 9% higher than the previous year primarily due to the robust demand for Drilling & Measurements services as offshore drilling activity strengthened in the US Gulf of Mexico, Sub-Sahara Africa, Russia and the Middle East & Asia Area and rig count increases in key international land markets, namely in Saudi Arabia, China and Australia.  Drilling Tools & Remedial and M-I SWACO Technologies expanded across all Areas and IPM increased on projects in Iraq, Australia and Argentina.

Pretax operating margin increased 156 bps to 19.3% primarily due to Drilling & Measurements, which benefited from higher-margin exploration activities both in North America offshore and in the international markets.

Production Group

Full-year revenue of $15.9 billion increased 8% year-on-year on increased Well Intervention activity and strong international sales of Completion and Artificial Lift products and Well Services technologies.  SPM also posted strong growth.  While North America land rig count declined, well and stage counts increased through drilling efficiency.  Despite the efficiency-driven activity increase, Well Services revenue in North America declined due to pricing weakness.

Pretax operating margin increased slightly by 72 bps to 16.4%. Margin expanded as a result of improved profitability in SPM, Completions and Artificial Lift, partially offset by a margin decline in Well Services technologies, primarily in North America, as a result of pricing pressure and cost inflation.

Interest and Other Income

Interest and other income consisted of the following:

	(Stated in millions)
	2014		2013		2012
Interest income	$	51	$	33	$	30
Earnings of equity method investments		240		132		142
	$	291	$	165	$	172

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The increase in earnings of equity method investments in 2014 as compared to 2013 primarily reflects the strong performance of a drilling service company in which Schlumberger has an investment, as well as the impact of the first full year of results from the OneSubsea joint venture.

Interest Expense

Interest expense of $369 million in 2014 decreased by $22 million compared to 2013 primarily as the effect of an increase in the weighted average debt balance of approximately $1.1 billion was more than offset by a 0.4% decrease in the weighted average borrowing rates from 3.2% in 2013 to 2.8% in 2014.

Interest expense of $391 million in 2013 increased by $51 million compared to 2012 primarily due to an increase in the weighted average debt balance of approximately $1.2 billion combined with a 0.1% increase in the weighted average borrowing rates from 3.1% in 2012 to 3.2% in 2013.

Other

Research & engineering and General & administrative expenses, as a percentage of Revenue, were as follows:

	2014			2013			2012
Research & engineering		2.5	%		2.6	%		2.8	%
General & administrative		1.0	%		0.9	%		1.0	%

Income Taxes

The Schlumberger effective tax rate was 25.2% in 2014, 21.3% in 2013, and 24.4% in 2012.

The Schlumberger effective tax rate is sensitive to the geographic mix of earnings. When the percentage of pretax earnings generated outside of North America increases, the Schlumberger effective tax rate will generally decrease. Conversely, when the percentage of pretax earnings generated outside of North America decreases, the Schlumberger effective tax rate will generally increase.

The effective tax rate for both 2014 and 2013 was significantly impacted by the charges and credits described in Note 3 to the Consolidated Financial Statements.  Excluding the impact of these charges and credits, the effective tax rate in 2014 was 21.9% compared to 22.9% in 2013.  The decrease in the effective tax rate, excluding the impact of charges and credits, was primarily attributable to the change in the geographic mix of earnings and the favorable resolution of tax examinations in certain jurisdictions.  

The charges and credits recorded in both 2014 and 2013 had a significant impact on the effective tax rate because, for the most part, they were not tax effective. However, the charges and credits in 2012 did not have a significant impact on the effective tax rate.  The decrease in the effective tax rate in 2013 as compared to 2012, excluding the impact of charges and credits, was primarily attributable to the fact that Schlumberger generated a smaller proportion of its pretax earnings in North America in 2013 as compared to 2012.

Charges and Credits

Schlumberger recorded significant charges and credits in continuing operations during 2014, 2013 and 2012. These charges and credits, which are summarized below, are more fully described in Note 3 to the Consolidated Financial Statements.

The following is a summary of the 2014 charges and credits:

	(Stated in millions)
	Pretax		Tax		Net		Classification
WesternGeco restructuring	$	806	$	25	$	781	Impairments & other
Currency devaluation loss in Venezuela		472		—		472	Impairments & other
Workforce reduction		296		37		259	Impairments & other
Impairment of SPM project		199		72		127	Impairments & other
	$	1,773	$	134	$	1,639

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The following is a summary of the 2013 charges and credits:

	(Stated in millions)
	Pretax			Tax		Net			Classification
Gain on formation of OneSubsea joint venture	$	(1,028	)	$	—	$	(1,028	)	Gain on formation of OneSubsea
Impairment of equity method investments		364			19		345		Impairments & other
Provision for accounts receivable		152			30		122		Cost of revenue
Currency devaluation loss in Venezuela		92			—		92		Impairments & other
	$	(420	)	$	49	$	(469	)

The following is a summary of the 2012 charges and credits:

	(Stated in millions)
	Pretax		Tax		Net		Classification
Merger and integration-related costs	$	128	$	16	$	112	Merger & integration
Workforce reduction		33		6		27	Impairments & other
	$	161	$	22	$	139

Net Debt

Net Debt represents gross debt less cash, short-term investments and fixed income investments, held to maturity. Management believes that Net Debt provides useful information regarding the level of Schlumberger’s indebtedness by reflecting cash and investments that could be used to repay debt.

Details of changes in Net Debt follow:

		(Stated in millions)
	2014			2013			2012
Income from continuing operations	$	5,711		$	6,843		$	5,259
Gain on formation of OneSubsea		—			(1,028	)		—
Impairments and other charges		1,773			608			—
Depreciation and amortization (1)		4,094			3,879			3,647
Earnings of equity method investments, less dividends received		(113	)		(71	)		(61	)
Pension and other postretirement benefits expense		355			518			403
Stock-based compensation expense		329			315			335
Pension and other postretirement benefits funding		(390	)		(538	)		(673	)
(Increase) decrease in working capital		(36	)		90			(2,045	)
Other		(528	)		74			50
Cash flow from operations		11,195			10,690			6,915
Capital expenditures		(3,976	)		(3,943	)		(4,694	)
SPM investments		(740	)		(902	)		(372	)
Multiclient seismic data capitalized		(321	)		(394	)		(351	)
Free cash flow (2)		6,158			5,451			1,498
Stock repurchase program		(4,678	)		(2,596	)		(972	)
Dividends paid		(1,968	)		(1,608	)		(1,432	)
Proceeds from employee stock plans		825			537			410
		337			1,784			(496	)
Business acquisitions and investments, net of cash acquired and debt assumed		(1,501	)		(610	)		(845	)
Payment for OneSubsea transaction		—			(600	)		—
Proceeds from divestiture		—			—			1,028
Other		220			94			52
(Increase) decrease in Net Debt		(944	)		668			(261	)
Net Debt, Beginning of period		(4,443	)		(5,111	)		(4,850	)
Net Debt, End of period	$	(5,387	)	$	(4,443	)	$	(5,111	)

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⁽¹⁾ Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

⁽²⁾ “Free cash flow” represents cash flow from operations less capital expenditures, SPM investments and multiclient seismic data capitalized.  Management believes that this is an important measure because it represents funds available to reduce debt and pursue opportunities that enhance shareholder value such as acquisitions and returning cash to shareholders through stock repurchases and dividends.

		(Stated in millions)
Components of Net Debt	Dec. 31 2014			Dec. 31 2013			Dec. 31 2012
Cash	$	3,130		$	3,472		$	1,905
Short-term investments		4,371			4,898			4,369
Fixed income investments, held to maturity		442			363			245
Long-term debt – current portion		(1,244	)		(1,819	)		(1,163	)
Short-term borrowings		(1,521	)		(964	)		(958	)
Long-term debt		(10,565	)		(10,393	)		(9,509	)
	$	(5,387	)	$	(4,443	)	$	(5,111	)

Key liquidity events during 2014, 2013 and 2012 included:

· During the fourth quarter of 2013, Schlumberger issued $1.5 billion of 3.65% Senior Notes due 2023.

· During the fourth quarter of 2013, Schlumberger issued €0.5 billion of 1.50% Guaranteed Notes due 2019.

● During the second quarter of 2013, Schlumberger paid Cameron $600 million in connection with the formation of the OneSubsea joint venture.

● During the third quarter of 2012, Schlumberger issued $1 billion of 1.25% Senior Notes due 2017 and $1 billion of 2.40% Senior Notes due 2022.

● During the third quarter of 2012, Schlumberger completed the divestiture of its 56% interest in CE Franklin Ltd. for $122 million in cash.

● During the second quarter of 2012, Schlumberger completed the divestiture of its Wilson distribution business for $906 million in cash.  

● On April 17, 2008, the Schlumberger Board of Directors (the “Board”) approved an $8 billion share repurchase program for shares of Schlumberger common stock, to be acquired before December 31, 2011. On July 21, 2011, the Board approved an extension of this repurchase program to December 31, 2013. This program was completed during the third quarter of 2013.

On July 18, 2013, the Board approved a new $10 billion share repurchase program to be completed at the latest by June 30, 2018. Schlumberger had repurchased $6.4 billion of shares under this new share repurchase program as of December 31, 2014.  Schlumberger is accelerating this share repurchase program with the aim of completing it in 2.5 years as compared to the original target of 5 years.

The following table summarizes the activity under these share repurchase programs during 2014, 2013 and 2012:

	(Stated in thousands, except per share amounts)
	Total cost of shares purchased		Total number of shares purchased		Average price paid per share
2014	$	4,677,687		47,545.9	$	98.38
2013	$	2,596,447		31,349.5	$	82.82
2012	$	971,883		14,087.8	$	68.99

· Net cash provided by operating activities was $11.2 billion in 2014, $10.7 billion in 2013 and $6.9 billion in 2012. The increase in net cash flow from operations in 2014 as compared to 2013 was largely attributable to an increase in earnings before non-cash charges and credits and depreciation and amortization expense.  The improvement in net cash flow from operating activities in 2013 as compared to 2012 reflected a strong working capital performance despite an 8.5% increase in revenue. 

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At times in recent years, Schlumberger has experienced delays in payments from its national oil company customer in Venezuela. Schlumberger operates in approximately 85 countries. At December 31, 2014, only three of those countries individually accounted for greater than 5% of Schlumberger’s accounts receivable balance, of which only one, the United States, represented greater than 10%. Venezuela represented less than 5% of Schlumberger’s accounts receivable balance at December 31, 2014.

● Dividends paid during 2014, 2013 and 2012 were $1.97 billion, $1.61 billion and $1.43 billion, respectively.

On January 15, 2015, Schlumberger announced that its Board had approved a 25% increase in the quarterly dividend, to $0.50.

On January 16, 2014, Schlumberger announced that its Board had approved a 28% increase in the quarterly dividend  to $0.40.

On January 17, 2013, Schlumberger announced that its Board had approved a 13.6% increase in the quarterly dividend to $0.3125.

● Capital expenditures were $4.0 billion in 2014, $3.9 billion in 2013 and $4.7 billion in 2012. Capital expenditures are expected to approach $3.4 billion for the full year 2015.

● During 2014, 2013 and 2012 Schlumberger made contributions of $390 million, $538 million and $673 million, respectively, to its postretirement benefit plans. The US pension plans were 86% funded at December 31, 2014 based on the projected benefit obligation. This compares to 96% funded at December 31, 2013.

Schlumberger’s international defined benefit pension plans were a combined 94% funded at December 31, 2014 based on the projected benefit obligation. This compares to 104% funded at December 31, 2013.

Schlumberger currently anticipates contributing approximately $400 million to its postretirement benefit plans in 2015, subject to market and business conditions.

On January 20, 2015, Schlumberger announced that it has entered into an agreement to acquire a minority ownership of approximately 45% in Eurasia Drilling Company Limited, the largest provider of onshore drilling services in Russia.  The cost of this transaction, which is expected to close during the first quarter of 2015, is approximately $1.7 billion in cash.

Schlumberger maintains a €5.0 billion Guaranteed Euro Medium Term Note program. This program provides for the issuance of various types of debt instruments such as fixed or floating rate notes in Euro, US dollar or other currencies.  Schlumberger has issued €0.5 billion 1.50% Guaranteed Notes due 2019 and €1.0 billion 2.75% Guaranteed Notes due 2015 under this program.

As of December 31, 2014, Schlumberger had $7.5 billion of cash and short-term investments on hand. Schlumberger had separate committed debt facility agreements aggregating $3.9 billion with commercial banks, of which $2.3 billion was available and unused as of December 31, 2014. The $3.9 billion of committed debt facility agreements included $3.5 billion of committed facilities which support commercial paper programs. Schlumberger believes that these amounts are sufficient to meet future business requirements for at least the next 12 months.

The total outstanding commercial paper borrowings were $1.538 billion as of December 31, 2014 and $95 million as of December 31, 2013.  

Summary of Contractual Obligations

			(Stated in millions)
			Payment Period
	Total		2015		2016 - 2017		2018 - 2019		After 2019
Debt (1)	$	13,330	$	2,765	$	2,665	$	2,709	$	5,191
Interest on fixed rate debt obligations (2)		1,456		265		409		366		416
Operating leases		1,630		330		456		290		554
Purchase obligations (3)		2,444		1,913		311		104		116
	$	18,860	$	5,273	$	3,841	$	3,469	$	6,277

⁽¹⁾ Excludes future payments for interest.

⁽²⁾ Excludes interest on $3.7 billion of variable rate debt, which had a weighted average interest rate of 1.3% as of December 31, 2014.

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⁽³⁾ Represents an estimate of contractual obligations in the ordinary course of business. Although these contractual obligations are considered enforceable and legally binding, the terms generally allow Schlumberger the option to reschedule and adjust its requirements based on business needs prior to the delivery of goods.

Refer to Note 18 Pension and Other Benefit Plans of the Consolidated Financial Statements for details regarding Schlumberger’s pension and other postretirement benefit obligations.

As discussed in Note 14 Income Taxes of the Consolidated Financial Statements, included in the Schlumberger Consolidated Balance Sheet at December 31, 2014 is approximately $1.4 billion of liabilities associated with uncertain tax positions in the over 100 jurisdictions in which Schlumberger conducts business. Due to the uncertain and complex application of tax regulations, combined with the difficulty in predicting when tax audits throughout the world may be concluded, Schlumberger cannot make reliable estimates of the timing of cash outflows relating to these liabilities.

Schlumberger has outstanding letters of credit/guarantees which relate to business performance bonds, custom/excise tax commitments, facility lease/rental obligations, etc. These were entered into in the ordinary course of business and are customary practices in the various countries where Schlumberger operates.

Critical Accounting Policies and Estimates

The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States requires Schlumberger to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenue and expenses. The following accounting policies involve “critical accounting estimates” because they are particularly dependent on estimates and assumptions made by Schlumberger about matters that are inherently uncertain. A discussion of all of Schlumberger’s significant accounting policies is included in Note 2 to the Consolidated Financial Statements.

Schlumberger bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Multiclient Seismic Data

The WesternGeco business capitalizes the costs associated with obtaining multiclient seismic data. The carrying value of the multiclient seismic data library at December 31, 2014 and 2013 was $793 million and $667 million, respectively. Such costs are charged to Cost of revenue based on the percentage of the total costs to the estimated total revenue that Schlumberger expects to receive from the sales of such data. However, under no circumstances will an individual survey carry a net book value greater than a 4-year, straight-line amortized value.

The carrying value of surveys is reviewed for impairment annually as well as when an event or change in circumstance indicates an impairment may have occurred. Adjustments to the carrying value are recorded when it is determined that estimated future revenues, which involve significant judgment on the part of Schlumberger, would not be sufficient to recover the carrying value of the surveys. Significant adverse changes in Schlumberger’s estimated future cash flows could result in impairment charges in a future period. For purposes of performing the annual impairment test of the multiclient library, larger surveys, which are typically prefunded by customers, are analyzed for impairment on a survey by survey basis and other smaller surveys are analyzed based on two pools of surveys: United States and non-United States. The United States and non-United States pools were determined to be the most appropriate level at which to perform the impairment review based upon a number of factors, including (i) various macroeconomic factors that influence the ability to successfully market surveys, and (ii) the focus of the sales force and related costs.

Allowance for Doubtful Accounts

Schlumberger maintains an allowance for doubtful accounts in order to record accounts receivable at their net realizable value. Judgment is involved in recording and making adjustments to this reserve. Allowances have been recorded for receivables believed to be uncollectible, including amounts for the resolution of potential credit and other collection issues such as disputed invoices. Depending on how such potential issues are resolved, or if the financial condition of Schlumberger customers were to deteriorate resulting in an impairment of their ability to make payments, adjustments to the allowance may be required.

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Goodwill, Intangible Assets and Long-Lived Assets

Schlumberger records the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired and liabilities assumed as goodwill. The goodwill relating to each of Schlumberger’s reporting units is tested for impairment annually as well as when an event, or change in circumstances, indicates an impairment may have occurred.

Under generally accepted accounting principles, Schlumberger has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of its reporting units is greater than its carrying amount. If, after assessing the totality of events or circumstances, Schlumberger determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then there is no need to perform any further testing. However, if Schlumberger concludes otherwise, then it is required to perform the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value.

Schlumberger has the option to bypass the qualitative assessment for any reporting unit in any period and proceed directly to performing the first step of the two-step goodwill impairment test.

For purposes of performing the impairment test for goodwill, Schlumberger’s reporting units are its three Groups: Reservoir Characterization, Drilling and Production. Schlumberger elected to perform the qualitative assessment described above for purposes of its annual goodwill impairment test in 2014. Based on this assessment, Schlumberger concluded that it was more likely than not that the fair value of each of its reporting units was greater than its carrying amount. Accordingly, no further testing was required.

Long-lived assets, including fixed assets, intangible assets and investments in SPM projects, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In reviewing for impairment, the carrying value of such assets is compared to the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. If such cash flows are not sufficient to support the asset’s recorded value, an impairment charge is recognized to reduce the carrying value of the long-lived asset to its estimated fair value. The determination of future cash flows as well as the estimated fair value of long-lived assets involves significant estimates on the part of management. If there is a material change in economic conditions or other circumstances influencing the estimate of future cash flows or fair value, Schlumberger could be required to recognize impairment charges in the future.

Income Taxes

Schlumberger conducts business in more than 100 tax jurisdictions, a number of which have tax laws that are not fully defined and are evolving. Schlumberger’s tax filings are subject to regular audits by the tax authorities. These audits may result in assessments for additional taxes which are resolved with the authorities or, potentially, through the courts. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits. Estimates of these tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of tax regulations, the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. In such an event, Schlumberger will record additional tax expense or tax benefit in the period in which such resolution occurs.

Pension and Postretirement Benefits

Schlumberger’s pension and postretirement benefit obligations are described in detail in Note 18 to the Consolidated Financial Statements. The obligations and related costs are calculated using actuarial concepts, which include critical assumptions related to the discount rate, expected rate of return on plan assets and medical cost trend rates. These assumptions are important elements of expense and/or liability measurement and are updated on an annual basis, or upon the occurrence of significant events.

The discount rate Schlumberger uses reflects the prevailing market rate of a portfolio of high-quality debt instruments with maturities matching the expected timing of the payment of the benefit obligations. The following summarizes the discount rates utilized by Schlumberger for its various pension and postretirement benefit plans:

● The discount rate utilized to determine the liability for Schlumberger’s United States pension plans and postretirement medical plans was 4.15% at December 31, 2014 and 4.85% at December 31, 2013.

● The weighted-average discount rate utilized to determine the liability for Schlumberger’s international pension plans was 4.07% at December 31, 2014 and 4.76% at December 31, 2013.

● The weighted-average discount rate utilized to determine expense for Schlumberger’s United States pension plans and postretirement medical plans increased from 4.25% in 2013 to 4.85% in 2014.

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● The weighted-average discount rate utilized to determine expense for Schlumberger’s international pension plans increased from 4.38% in 2013 to 4.76% in 2014.

The expected rate of return for our retirement benefit plans represents the average rate of return expected to be earned on plan assets over the period that benefits included in the benefit obligation are expected to be paid. The expected rate of return for Schlumberger’s United States pension plans has been determined based upon expected rates of return for the investment portfolio, with consideration given to the distribution of investments by asset class and historical rates of return for each individual asset class. The weighted average expected rate of return on plan assets for the United States pension plans decreased from 7.50% in 2013 to 7.25% in 2014. The weighted average expected rate of return on plan assets for the international pension plans was 7.50% in both 2014 and 2013. A lower expected rate of return would increase pension expense.

Schlumberger’s medical cost trend rate assumptions are developed based on historical cost data, the near-term outlook and an assessment of likely long-term trends. The overall medical cost trend rate assumption utilized to determine the 2014 postretirement medical expense was 7.25% graded to 5% over the next ten years. The overall medical trend rate assumption utilized to determine the postretirement medical liability at December 31, 2014 was 7.00% graded to 5% over the next ten years.

The following illustrates the sensitivity to changes in certain assumptions, holding all other assumptions constant, for the United States and international pension plans:

	(Stated in millions)
Change in Assumption	Effect on 2014 Pretax Pension Expense		Effect on Dec. 31, 2014 Liability
25 basis point decrease in discount rate	+$	52	+$	481
25 basis point increase in discount rate	–$	52	–$	452
25 basis point decrease in expected return on plan assets	+$	22		—
25 basis point increase in expected return on plan assets	–$	22		—

The following illustrates the sensitivity to changes in certain assumptions, holding all other assumptions constant, for Schlumberger’s United States postretirement medical plans:

			(Stated in millions)
Change in Assumption	Effect on 2014 Pretax Postretirement Medical Expense		Effect on Dec. 31, 2014 Liability
25 basis point decrease in discount rate	+$	6	+$	45
25 basis point increase in discount rate	–$	2	–$	48
100 basis point decrease per annum in medical cost trend rate	–$	17	–$	33
100 basis point increase per annum in medical cost trend rate	+$	42	+$	37

Investments in Affiliated Companies

Investments in Affiliated Companies on the consolidated balance sheet primarily reflects Schlumberger’s investments in privately held companies, some of which are in the startup or development stages and are often still defining their strategic direction. Such investments are inherently risky and their success is dependent on factors such as technology development, market acceptance and their ability to raise additional funds. The technology being developed by these companies may never materialize and they could fail. Schlumberger monitors its portfolio to determine if any investment is other-than-temporarily impaired. If an investment is considered to be other-than-temporarily impaired, it is written down to its fair value.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Schlumberger is subject to market risks primarily associated with changes in foreign currency exchange rates and interest rates.

As a multinational company, Schlumberger conducts business in approximately 85 countries. Schlumberger’s functional currency is primarily the US dollar, which is consistent with the oil and gas industry. Approximately 81% of Schlumberger’s revenue in 2014 was denominated in US dollars. However, outside the United States, a significant portion of Schlumberger’s expenses is incurred in foreign currencies. Therefore, when the US dollar weakens in relation to the foreign currencies of the countries in which Schlumberger conducts business, the US dollar-reported expenses will increase.

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A 5% increase or decrease in the average exchange rates of all the foreign currencies in 2014 would have changed revenue by approximately 1%. If the 2014 average exchange rates of the US dollar against all foreign currencies had strengthened by 5%, Schlumberger’s income from continuing operations would have increased by approximately 3%. Conversely, a 5% weakening of the US dollar average exchange rates would have decreased income from continuing operations by approximately 3%.

Please refer to Note 3 to the Consolidated Financial Statements for a discussion of exchange rates as it relates to Schlumberger’s operations in Venezuela.

Schlumberger maintains a foreign-currency risk management strategy that uses derivative instruments to protect its interests from unanticipated fluctuations in earnings and cash flows caused by volatility in currency exchange rates. Foreign currency forward contracts and foreign currency options provide a hedge against currency fluctuations either on monetary assets/liabilities denominated in other than a functional currency or on expenses.

At December 31, 2014, contracts were outstanding for the US dollar equivalent of $6.8 billion in various foreign currencies of which $2.5 billion relate to hedges of debt balances denominated in currencies other than the functional currency.

Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio and occasionally interest rate swaps to mitigate the exposure to changes in interest rates. At December 31, 2014, Schlumberger had fixed rate debt aggregating approximately $9.6 billion and variable rate debt aggregating approximately $3.7 billion before considering the effects of cross currency swaps.

Schlumberger’s exposure to interest rate risk associated with its debt is also partially mitigated by its investment portfolio. Both Short-term investments and Fixed income investments, held to maturity, which totaled approximately $4.8 billion at December 31, 2014, are comprised primarily of money market funds, time deposits, certificates of deposit, commercial paper, bonds and notes, substantially all of which are denominated in US dollars. The average return on investment was 0.7% in 2014.

The following table represents carrying amounts of Schlumberger’s debt at December 31, 2014 by year of maturity:

															(Stated in millions)
	Expected Maturity Dates
Fixed rate debt	2015		2016		2017		2018		2019		2021		2022		2023		Total
3.30% Senior Notes											$	1,597					$	1,597
3.65% Senior Notes															$	1,495		1,495
2.75% Guaranteed Notes	$	1,218																1,218
1.95% Senior Notes			$	1,100														1,100
4.20% Senior Notes												1,100						1,100
1.25% Senior Notes					$	1,000												1,000
2.40% Senior Notes													$	999				999
1.50% Guaranteed Notes									$	628								628
2.65% Senior Notes				500														500
Total fixed rate debt	$	1,218	$	1,600	$	1,000	$	—	$	628	$	2,697	$	999	$	1,495	$	9,637
Variable rate debt		1,547		37		28		1,866		215		—		—		—		3,693
Total	$	2,765	$	1,637	$	1,028	$	1,866	$	843	$	2,697	$	999	$	1,495	$	13,330

The fair market value of the outstanding fixed rate debt was approximately $9.8 billion as of December 31, 2014. The weighted average interest rate on the variable rate debt as of December 31, 2014 was 1.3%.

Schlumberger does not enter into derivatives for speculative purposes.

Forward-looking Statements

This Form 10-K and other statements we make contain “forward-looking statements” within the meaning of the federal securities laws, which include any statements that are not historical facts, such as our forecasts or expectations regarding business outlook; growth for Schlumberger as a whole and for each of its segments (and for specified products or geographic areas within each segment); oil and natural gas demand and production growth; oil and natural gas prices; improvements in operating procedures and technology; capital expenditures by Schlumberger and the oil and gas industry; the business strategies of Schlumberger’s customers; the success of Schlumberger’s joint ventures, alliances, acquisitions and restructuring efforts; future global economic conditions; and future results of operations. These statements are subject to risks and uncertainties, including, but not limited to, global economic conditions; changes in exploration and production spending by Schlumberger’s customers and changes in the level of oil and natural gas exploration and development; general economic, political and business conditions in key regions of the world, including in Russia and

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the Ukraine; pricing erosion; weather and seasonal factors; operational delays; production declines; changes in government regulations and regulatory requirements, including those related to offshore oil and gas exploration, radioactive sources, explosives, chemicals, hydraulic fracturing services, technology and climate-related initiatives; the inability of technology to meet new challenges in exploration; and other risks and uncertainties detailed in the Risk Factors section of this Form 10-K and other filings that we make with the Securities and Exchange Commission. If one or more of these or other risks or uncertainties materialize (or the consequences of such a development changes), or should our underlying assumptions prove incorrect, actual outcomes may vary materially from those reflected in our forward-looking statements. Schlumberger disclaims any intention or obligation to update publicly or revise such statements, whether as a result of new information, future events or otherwise.

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Item 8. Financial Statements and Supplementary Data.

SCHLUMBERGER LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF INCOME

	(Stated in millions, except per share amounts)
Year Ended December 31,	2014			2013			2012
Revenue	$	48,580		$	45,266		$	41,731
Interest and other income		291			165			172
Gain on formation of OneSubsea		—			1,028			—
Expenses
Cost of revenue		37,398			35,331			32,885
Research & engineering		1,217			1,174			1,153
General & administrative		475			416			405
Merger & integration		—			—			128
Impairments & other		1,773			456			33
Interest		369			391			340
Income from continuing operations before taxes		7,639			8,691			6,959
Taxes on income		1,928			1,848			1,700
Income from continuing operations		5,711			6,843			5,259
Income (loss) from discontinued operations		(205	)		(69	)		260
Net income		5,506			6,774			5,519
Net income attributable to noncontrolling interests		68			42			29
Net income attributable to Schlumberger	$	5,438		$	6,732		$	5,490
Schlumberger amounts attributable to:
Income from continuing operations	$	5,643		$	6,801		$	5,230
Income (loss) from discontinued operations		(205	)		(69	)		260
Net income	$	5,438		$	6,732		$	5,490
Basic earnings per share of Schlumberger:
Income from continuing operations	$	4.36		$	5.14		$	3.93
Income (loss) from discontinued operations		(0.16	)		(0.05	)		0.20
Net income	$	4.20		$	5.09		$	4.13
Diluted earnings per share of Schlumberger:
Income from continuing operations	$	4.31		$	5.10		$	3.91
Income (loss) from discontinued operations		(0.16	)		(0.05	)		0.19
Net income (1)	$	4.16		$	5.05		$	4.10
Average shares outstanding:
Basic		1,295			1,323			1,330
Assuming dilution		1,308			1,333			1,339

⁽¹⁾ Amounts may not add due to rounding.

See the Notes to Consolidated Financial Statements

30

SCHLUMBERGER LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME

	(Stated in millions)
Year Ended December 31,	2014			2013			2012
Net income	$	5,506		$	6,774		$	5,519
Currency translation adjustments
Unrealized net change arising during the period		(463	)		(151	)		76
Marketable securities
Unrealized gain (loss) arising during the period		(166	)		35			141
Cash flow hedges
Net gain (loss) on cash flow hedges		(238	)		49			92
Reclassification to net income of net realized (gain) loss		113			(50	)		(36	)
Pension and other postretirement benefit plans
Actuarial gain (loss)
Actuarial gain (loss) arising during the period		(1,285	)		1,328			(1,016	)
Amortization to net income of net actuarial loss		177			300			187
Prior service cost
Amortization to net income of net prior service cost		128			125			125
Income taxes on pension and other postretirement benefit plans		82			(302	)		100
Comprehensive income		3,854			8,108			5,188
Comprehensive income attributable to noncontrolling interests		68			42			29
Comprehensive income attributable to Schlumberger	$	3,786		$	8,066		$	5,159

See the Notes to Consolidated Financial Statements

31

SCHLUMBERGER LIMITED AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEET

	(Stated in millions)
December 31,	2014			2013
ASSETS
Current Assets
Cash	$	3,130		$	3,472
Short-term investments		4,371			4,898
Receivables less allowance for doubtful accounts (2014 - $275; 2013 - $384)		11,171			11,497
Inventories		4,628			4,603
Deferred taxes		144			288
Other current assets		1,250			1,467
		24,694			26,225
Fixed Income Investments, held to maturity		442			363
Investments in Affiliated Companies		3,235			3,317
Fixed Assets less accumulated depreciation		15,396			15,096
Multiclient Seismic Data		793			667
Goodwill		15,487			14,706
Intangible Assets		4,654			4,709
Other Assets		2,203			2,017
	$	66,904		$	67,100
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable and accrued liabilities	$	9,246		$	8,837
Estimated liability for taxes on income		1,647			1,490
Long-term debt - current portion		1,244			1,819
Short-term borrowings		1,521			964
Dividends payable		518			415
		14,176			13,525
Long-term Debt		10,565			10,393
Postretirement Benefits		1,501			670
Deferred Taxes		1,296			1,708
Other Liabilities		1,317			1,169
		28,855			27,465
Equity
Common stock		12,495			12,192
Treasury stock		(11,772	)		(8,135	)
Retained earnings		41,333			37,966
Accumulated other comprehensive loss		(4,206	)		(2,554	)
Schlumberger stockholders’ equity		37,850			39,469
Noncontrolling interests		199			166
		38,049			39,635
	$	66,904		$	67,100

See the Notes to Consolidated Financial Statements

32

SCHLUMBERGER LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CASH FLOWS

	(Stated in millions)
Year Ended December 31,	2014			2013			2012
Cash flows from operating activities:
Net Income	$	5,506		$	6,774		$	5,519
Add: Loss (income) from discontinued operations		205			69			(260	)
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on formation of OneSubsea		—			(1,028	)		—
Impairments and other charges		1,773			608			—
Depreciation and amortization (1)		4,094			3,879			3,647
Pension and other postretirement benefits expense		355			518			403
Stock-based compensation expense		329			315			335
Pension and other postretirement benefits funding		(390	)		(538	)		(673	)
Earnings of equity method investments, less dividends received		(113	)		(71	)		(61	)
Change in operating assets and liabilities (2):
Increase in receivables		(187	)		(803	)		(2,051	)
(Increase) decrease in inventories		(36	)		188			(645	)
Decrease (increase) in other current assets		119			17			(350	)
Increase in other assets		(134	)		(78	)		(28	)
(Decrease) increase in accounts payable and accrued liabilities		(36	)		654			876
Increase in estimated liability for taxes on income		104			34			125
(Decrease) increase in other liabilities		(79	)		60			1
Other		(315	)		92			77
NET CASH PROVIDED BY OPERATING ACTIVITIES		11,195			10,690			6,915
Cash flows from investing activities:
Capital expenditures		(3,976	)		(3,943	)		(4,694	)
SPM investments		(740	)		(902	)		(372	)
Multiclient seismic data capitalized		(321	)		(394	)		(351	)
Business acquisitions and investments, net of cash acquired		(1,008	)		(1,210	)		(845	)
Sale (purchase) of investments, net		446			(648	)		(1,228	)
Other		19			218			(55	)
NET CASH USED IN INVESTING ACTIVITIES		(5,580	)		(6,879	)		(7,545	)
Cash flows from financing activities:
Dividends paid		(1,968	)		(1,608	)		(1,432	)
Proceeds from employee stock purchase plan		295			270			247
Proceeds from exercise of stock options		530			267			163
Stock repurchase program		(4,678	)		(2,596	)		(972	)
Proceeds from issuance of long-term debt		2,289			4,554			2,832
Repayment of long-term debt		(2,878	)		(3,141	)		(1,817	)
Net increase in short-term borrowings		552			37			621
Other		(38	)		18			19
NET CASH USED IN FINANCING ACTIVITIES		(5,896	)		(2,199	)		(339	)
Cash flow provided by (used in) discontinued operations - operating activities		24			(2	)		145
Cash flow (used in) provided by discontinued operations - investing activities		—			(28	)		1,011
Cash flow provided by (used in) discontinued operations		24			(30	)		1,156
Net (decrease) increase in cash before translation effect		(257	)		1,582			187
Translation effect on cash		(85	)		(15	)		13
Cash, beginning of year		3,472			1,905			1,705
Cash, end of year	$	3,130		$	3,472		$	1,905

⁽¹⁾ Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

⁽²⁾ Net of the effect of business acquisitions and divestitures.

See the Notes to Consolidated Financial Statements

33

SCHLUMBERGER LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

										(Stated in millions)
							Retained Earnings			Accumulated Other Comprehensive Loss			Noncontrolling Interests			Total
Common Stock
Issued			In Treasury
Balance, January 1, 2012	$	11,639		$	(5,679	)	$	28,860		$	(3,557	)	$	129		$	31,392
Net income								5,490						29			5,519
Currency translation adjustments											71						71
Change in unrealized gain on marketable securities											141						141
Changes in fair value of cash flow hedges											56						56
Pension and other postretirement benefit plans											(604	)					(604	)
Shares sold to optionees less shares exchanged		(75	)		238												163
Vesting of restricted stock		(20	)		20												—
Shares issued under employee stock purchase plan		16			231												247
Stock repurchase program					(972	)											(972	)
Stock-based compensation cost		335															335
Sale of CE Franklin											5			(68	)		(63	)
Dividends declared ($1.10 per share)								(1,463	)								(1,463	)
Other		17			2									17			36
Balance, December 31, 2012		11,912			(6,160	)		32,887			(3,888	)		107			34,858
Net income								6,732						42			6,774
Currency translation adjustments											(151	)					(151	)
Change in unrealized gain on marketable securities											35						35
Changes in fair value of cash flow hedges											(1	)					(1	)
Pension and other postretirement benefit plans											1,451						1,451
Shares sold to optionees less shares exchanged		(44	)		311												267
Vesting of restricted stock		(56	)		56												—
Shares issued under employee stock purchase plan		18			252												270
Stock repurchase program					(2,596	)											(2,596	)
Stock-based compensation cost		315															315
Dividends declared ($1.25 per share)								(1,653	)								(1,653	)
Other		47			2									17			66
Balance, December 31, 2013		12,192			(8,135	)		37,966			(2,554	)		166			39,635
Net income								5,438						68			5,506
Currency translation adjustments											(463	)					(463	)
Change in unrealized gain on marketable securities											(166	)					(166	)
Changes in fair value of cash flow hedges											(125	)					(125	)
Pension and other postretirement benefit plans											(898	)					(898	)
Shares sold to optionees less shares exchanged		(26	)		556												530
Vesting of restricted stock		(79	)		79												—
Shares issued under employee stock purchase plan		33			262												295
Stock repurchase program					(4,678	)											(4,678	)
Stock-based compensation cost		329															329
Dividends declared ($1.60 per share)								(2,071	)								(2,071	)
Shares issued for acquisition		72			141												213
Other		(26	)		3									(35	)		(58	)
Balance, December 31, 2014	$	12,495		$	(11,772	)	$	41,333		$	(4,206	)	$	199		$	38,049

See the Notes to Consolidated Financial Statements

34

SCHLUMBERGER LIMITED AND SUBSIDIARIES

SHARES OF COMMON STOCK

	(Stated in millions)
	Issued		In Treasury			Shares Outstanding
Balance, January 1, 2012		1,434		(100	)		1,334
Shares sold to optionees less shares exchanged		—		4			4
Shares issued under employee stock purchase plan		—		4			4
Stock repurchase program Stock repurchase program		—		(14	)		(14	)
Balance, December 31, 2012		1,434		(106	)		1,328
Shares sold to optionees less shares exchanged		—		5			5
Vesting of restricted stock		—		1			1
Shares issued under employee stock purchase plan		—		4			4
Stock repurchase program		—		(31	)		(31	)
Balance, December 31, 2013		1,434		(127	)		1,307
Shares sold to optionees less shares exchanged		—		9			9
Vesting of restricted stock		—		1			1
Shares issued under employee stock purchase plan		—		4			4
Shares issued for acquisition		—		2			2
Stock repurchase program		—		(48	)		(48	)
Balance, December 31, 2014		1,434		(159	)		1,275

See the Notes to Consolidated Financial Statements

35

Notes to Consolidated Financial Statements

1. Business Description

Schlumberger Limited (Schlumberger N.V., incorporated in Curaçao) and its consolidated subsidiaries (collectively, “Schlumberger”) comprise the world’s leading supplier of technology, integrated project management and information solutions to the international oil and gas exploration and production industry.

2. Summary of Accounting Policies

The Consolidated Financial Statements of Schlumberger have been prepared in accordance with accounting principles generally accepted in the United States of America.

Principles of Consolidation

The accompanying Consolidated Financial Statements include the accounts of Schlumberger, its wholly-owned subsidiaries, and other subsidiaries over which it exercises a controlling financial interest. All significant intercompany transactions and balances have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; recoverability of fixed assets, goodwill, intangible assets, Schlumberger Production Management investments and investments in affiliates; income taxes; multiclient seismic data; contingencies and actuarial assumptions for employee benefit plans. Schlumberger bases its estimates on historical experience and other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Revenue Recognition

Schlumberger recognizes revenue based upon purchase orders, contracts or other persuasive evidence of an arrangement with the customer that include fixed or determinable prices provided that collectibility is reasonably assured. Revenue is recognized for services when they are rendered. Revenue is recognized for products upon delivery and when the customer assumes the risks and rewards of ownership.

Revenue from seismic contract services performed on a dayrate basis is recognized as the service is performed. Revenue from other services, including pre-funded multiclient surveys, is recognized as the seismic data is acquired and/or processed on a proportionate basis as work is performed. This method requires revenue to be recognized based upon quantifiable measures of progress, such as square kilometers acquired. Multiclient data surveys are licensed or sold to customers on a non-transferable basis. Revenue from sales of completed multiclient data surveys is recognized upon obtaining a signed licensing agreement and providing customers with access to such data.

Revenue is occasionally generated from contractual arrangements that include multiple deliverables. Revenue from these arrangements is recognized as each item is delivered based on their relative fair value, provided that the delivered items have stand-alone value to the customer.

Revenue derived from the sale of licenses of Schlumberger software may include installation, maintenance, consulting and training services. If services are not essential to the functionality of the software, the revenue for each element of the contract is recognized separately based on its respective vendor specific objective evidence of fair value when all of the following conditions are met: a signed contract is obtained, delivery has occurred, the fee is fixed or determinable and collectibility is probable.

Translation of Non-United States Currencies

The functional currency of Schlumberger is primarily the US dollar. Assets and liabilities recorded in functional currencies other than US dollars are translated at period-end exchange rates. The resulting adjustments are charged or credited directly to the Equity section of the Consolidated Balance Sheet. Revenue and expenses are translated at the weighted-average exchange rates for the period.

36

Realized and unrealized transaction gains and losses are included in income in the period in which they occur. Transaction losses of $67 million, $24 million and $37 million, net of hedging activities, were recognized in 2014, 2013 and 2012, respectively.

Short-term and Fixed Income Investments

The Consolidated Balance Sheet reflects the Schlumberger investment portfolio separated between current and long term, based on maturity. Both Short-term investments and Fixed Income Investments, held to maturity are comprised primarily of money market funds, time deposits, certificates of deposit, commercial paper, bonds and notes, substantially all of which are denominated in US dollars. Under normal circumstances Schlumberger intends to hold such investments until maturity, with the exception of $194 million of investments at December 31, 2013 that are considered trading. Short-term investments designated as trading are stated at fair value, which is estimated using quoted market prices for those or similar investments. All other investments are stated at cost plus accrued interest, which approximates market. The unrealized gains/losses on investments designated as trading were not significant at December 31, 2013.

For purposes of the Consolidated Statement of Cash Flows, Schlumberger does not consider Short-term investments to be cash equivalents.

Fixed Income Investments, held to maturity at December 31, 2014 of $442 million mature as follows: $49 million in 2016, $91 million in 2017, $298 million in 2018, $3 million in 2019 and $1 million in 2020.

Inventories

Inventories are stated at average cost or at market, whichever is lower. Costs included in Inventories consist of materials, direct labor and manufacturing overhead.

Investments in Affiliated Companies

Investments in companies in which Schlumberger does not have a controlling financial interest, but over which it has significant influence are accounted for using the equity method. Schlumberger’s share of the after-tax earnings of equity method investees is included in Interest and other income. Investments in privately held companies in which Schlumberger does not have the ability to exercise significant influence are accounted for using the cost method. Investments in publicly traded companies in which Schlumberger does not have significant influence are accounted for as available-for-sale marketable securities. These marketable securities are reported at fair value, based on quoted market prices, with unrealized gains and losses reported as a component of Accumulated other comprehensive loss. The fair value of these marketable securities was $91 million and $257 million at December 31, 2014 and 2013, respectively. The cost basis of these marketable securities was $81 million at both December 31, 2014 and 2013.

Equity and cost method investments as well as investments in publicly traded companies are classified as Investments in Affiliated Companies in the Consolidated Balance Sheet.

Fixed Assets and Depreciation

Fixed assets are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Fixed assets include the manufacturing cost of oilfield technical equipment manufactured or assembled by subsidiaries of Schlumberger. Expenditures for replacements and improvements are capitalized. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the balance sheet and the net amount, less proceeds from disposal, is charged or credited to income.

Multiclient Seismic Data

The multiclient library consists of completed and in-process seismic surveys that are licensed on a nonexclusive basis. Schlumberger capitalizes costs directly incurred in acquiring and processing the multiclient seismic data. Such costs are charged to Cost of revenue based on the percentage of the total costs to the estimated total revenue that Schlumberger expects to receive from the sales of such data. However, under no circumstance will an individual survey carry a net book value greater than a 4-year, straight-line amortized value.

The carrying value of the multiclient library is reviewed for impairment annually as well as when an event or change in circumstance indicating impairment may have occurred. Adjustments to the carrying value are recorded when it is determined that estimated future cash flows, which involves significant judgment on the part of Schlumberger, would not be sufficient to recover the carrying value of

37

the surveys. Significant adverse changes in Schlumberger’s estimated future cash flows could result in impairment charges in a future period.

Schlumberger Production Management

Schlumberger Production Management (SPM) projects are focused on developing and co-managing the production of Schlumberger customers’ assets under long-term agreements.  Schlumberger will invest its own services, products and in some cases cash, into the field development activities and operations.  Although in certain arrangements Schlumberger is paid for a portion of the services or products it provides, generally Schlumberger will not be paid at the time of providing its services or upon delivery of its products. Instead, Schlumberger is compensated based upon cash flow generated or on a fee-per-barrel basis for any incremental production Schlumberger helps deliver above a mutually agreed baseline.

Schlumberger capitalizes its cash investments in a project as well as the direct costs associated with providing services or products for which Schlumberger will be compensated if incremental production is achieved.  Revenue is recognized as the incremental production is achieved. These capitalized investments are amortized to the Consolidated Statement of Income as incremental oil production is achieved based on the units of production method, whereby each incremental unit produced is assigned a pro-rata portion of the unamortized costs based on estimated total incremental production, resulting in a matching of revenue with the applicable costs.

The unamortized portion of Schlumberger’s investments in SPM projects was approximately $1.411 billion and $1.154 billion at December 31, 2014 and 2013, respectively.  These amounts are included within Other Assets in Schlumberger’s Consolidated Balance Sheet.  In 2014, Schlumberger revised its Consolidated Statement of Cash Flows to present certain cash outflows relating to SPM activities as a separate line item within investing activities, referred to as SPM investments. Schlumberger historically presented such cash outflows as an operating activity. This change was not material to prior periods.

Goodwill, Intangible Assets and Long-lived Assets

Schlumberger records the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired and liabilities assumed as goodwill. The goodwill relating to each of Schlumberger’s reporting units is tested for impairment annually as well as when an event, or change in circumstances, indicates an impairment may have occurred.

Under generally accepted accounting principles, Schlumberger has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of its reporting units is greater than its carrying amount. If, after assessing the totality of events or circumstances, Schlumberger determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then there is no need to perform any further testing. However, if Schlumberger concludes otherwise, then it is required to perform the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value.

Schlumberger has the option to bypass the qualitative assessment for any reporting unit in any period and proceed directly to performing the first step of the two-step goodwill impairment test.

For purposes of performing the impairment test for goodwill, Schlumberger’s reporting units are its three Groups: Reservoir Characterization, Drilling and Production. Schlumberger elected to perform the qualitative assessment described above for purposes of its annual goodwill impairment test in 2014. Based on this assessment, Schlumberger concluded that it was more likely than not that the fair value of each of its reporting units was greater than its carrying amount. Accordingly, no further testing was required.

Long-lived assets, including fixed assets, intangible assets and investments in SPM projects, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In reviewing for impairment, the carrying value of such assets is compared to the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. If such cash flows are not sufficient to support the asset’s recorded value, an impairment charge is recognized to reduce the carrying value of the long-lived asset to its estimated fair value. The determination of future cash flows as well as the estimated fair value of long-lived assets involve significant estimates on the part of management. If there is a material change in economic conditions or other circumstances influencing the estimate of future cash flows or fair value, Schlumberger could be required to recognize impairment charges in the future.

Intangible assets consist primarily of customer relationships, technology/technical know-how and tradenames acquired in business combinations. Customer relationships are generally amortized over periods ranging from 15 to 28 years, acquired technology/technical know-how are generally amortized over periods ranging from 10 to 18 years, and tradenames are generally amortized over periods ranging from 15 to 30 years.

38

Taxes on Income

Schlumberger computes taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities vary substantially. Taxable income may differ from pretax income for financial accounting purposes. To the extent that differences are due to revenue or expense items reported in one period for tax purposes and in another period for financial accounting purposes, an appropriate provision for deferred income taxes is made. Any effect of changes in income tax rates or tax laws are included in the provision for income taxes in the period of enactment. When it is more likely than not that a portion or all of the deferred tax asset will not be realized in the future, Schlumberger provides a corresponding valuation allowance against deferred tax assets.

Schlumberger’s tax filings are subject to regular audit by the tax authorities in most of the jurisdictions in which it conducts business. These audits may result in assessments for additional taxes which are resolved with the authorities or, potentially, through the courts. Schlumberger recognizes the impact of a tax position in its financial statements if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits. Estimates of these tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of tax regulations, the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. In such an event, Schlumberger will record additional tax expense or tax benefit in the year in which such resolution occurs.

Schlumberger generally does not provide income taxes relating to undistributed earnings, as the earnings either would not be taxable when remitted or are considered to be indefinitely reinvested.

Concentration of Credit Risk

Schlumberger’s assets that are exposed to concentrations of credit risk consist primarily of cash, short-term investments, fixed income investments held to maturity, receivables from clients and derivative financial instruments. Schlumberger places its cash, short-term investments and fixed income investments held to maturity with financial institutions and corporations, and limits the amount of credit exposure with any one of them. Schlumberger regularly evaluates the creditworthiness of the issuers in which it invests. Accounts receivable are spread over many countries and customers. Schlumberger maintains an allowance for uncollectible accounts receivable based on expected collectibility and performs ongoing credit evaluations of its customers’ financial condition. By using derivative financial instruments to hedge certain exposures, Schlumberger exposes itself to some credit risk. Schlumberger minimizes this credit risk by entering into transactions with high-quality counterparties, limiting the exposure to each counterparty and monitoring the financial condition of its counterparties.

Research & Engineering

All research and engineering expenditures are expensed as incurred.

Earnings per Share

Basic earnings per share of Schlumberger from continuing operations is calculated by dividing income from continuing operations attributable to Schlumberger by the weighted average number of common shares outstanding during the year. Diluted earnings per share is calculated by dividing income from continuing operations attributable to Schlumberger by the sum of (i) unvested restricted stock units and (ii) the weighted average number of common shares outstanding assuming dilution. The weighted average number of common shares outstanding assuming dilution assumes that all in-the-money stock options are exercised at the beginning of the period and the related proceeds are used by Schlumberger to purchase shares of its common stock at the average market price for the period.

39

The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

	(Stated in millions except per share amounts)
	Schlumberger Income from Continuing Operations		Weighted Average Shares Outstanding		Earnings Per Share from Continuing Operations
2014:
Basic	$	5,643		1,295	$	4.36
Assumed exercise of stock options		—		9
Unvested restricted stock		—		4
Diluted	$	5,643		1,308	$	4.31
2013:
Basic	$	6,801		1,323	$	5.14
Assumed exercise of stock options		—		6
Unvested restricted stock		—		4
Diluted	$	6,801		1,333	$	5.10
2012:
Basic	$	5,230		1,330	$	3.93
Assumed exercise of stock options		—		5
Unvested restricted stock		—		4
Diluted	$	5,230		1,339	$	3.91

Employee stock options to purchase 5 million, 12 million and 21 million shares of common stock at December 31, 2014, 2013 and 2012, respectively, were outstanding but not included in the computation of diluted earnings per share because the option exercise price was greater than the average market price of the common stock, and therefore the effect on diluted earnings per share would have been anti-dilutive.

Recently Issued Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. This ASU amends the existing accounting standards for revenue recognition and is based on the principlethat revenue should be recognized to depict the transfer of goods or services to a customer at an amount that reflects the considerationa company expects to receive in exchange for those goods or services. Schlumberger is required to adopt this ASU on January 1,2017 and does not expect this ASU to have a material impact on its consolidated financial statements.

In April 2014, the FASB issued ASU 2014-08, Presentation of Financial Statements and Property, Plant, and Equipment – Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which amends the definition of a discontinued operation by raising the threshold for a disposal to qualify as a discontinued operation.  The threshold under the ASU is defined as a strategic shift that has, or will have, a major effect on an entity’s operations and financial results such as a disposal of a major geographical area or a major line of business.  Schlumberger adopted this ASU, on a prospective basis, effective January 1, 2015.

3. Charges and Credits

Schlumberger recorded the following charges and credits in continuing operations during 2014, 2013 and 2012:

2014

· Due to the expectation of lower exploration spending as a result of lower commodity prices, during the fourth quarter of 2014, Schlumberger decided to restructure its WesternGeco marine seismic fleet in order to lower its operating costs.  Three previous-generation acquisition vessels with lower towing capacity and higher operating costs will be converted to source vessels, allowing for the termination of two third-party source vessel leases and the retirement of two owned source vessels.

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As a result of this restructuring, Schlumberger performed an impairment test and determined that the carrying values of certain of its vessels exceeded their respective fair values by $590 million.  This impairment charge relates to the six Explorer-class vessels which were acquired at a premium in the 2007 purchase of Eastern Echo Holdings Plc.  The fair value of these vessels was estimated primarily based on the replacement cost method, which was largely based on unobservable inputs that required significant judgments.

In addition to the $590 million impairment charge relating to these six vessels, Schlumberger also recorded an $85 million impairment charge relating to a seismic intangible asset and $131 million of other charges primarily related to lease termination costs and other seismic assets as a result of the restructuring.  Schlumberger did not incur any significant cash expenditures as a result of these charges.

· During 2014, Venezuela enacted certain changes to its foreign exchange system such that, in addition to the official rate of 6.3 Venezuelan Bolivares fuertes per US dollar, there are currently two other legal exchange rates that may be obtained via different exchange rate mechanisms.  These changes included the expansion of what is known as the SICAD I auction rate and the introduction of the SICAD II auction process.  The SICAD I and SICAD II exchange rates were approximately 11 and 50 Venezuelan Bolivares fuertes to the US dollar, respectively, at December 31, 2014.

Although the functional currency of Schlumberger’s operations in Venezuela is the US dollar, a portion of the transactions are denominated in local currency.  Schlumberger has historically applied the official exchange rate to remeasure local currency transactions and balances into US dollars.

Effective December 31, 2014, Schlumberger concluded that it was appropriate to apply the SICAD II exchange rate as it now believes that this rate best represents the economics of Schlumberger’s business activity in Venezuela.  As a result, Schlumberger recorded a $472 million devaluation charge during the fourth quarter of 2014.

Going forward, this change will result in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income.  For example, if Schlumberger had applied an exchange rate of 50 Venezuelan Bolivares fuertes to the US dollar throughout 2014, it would have reduced Schlumberger earnings by approximately $0.08 per share.

· In response to lower commodity pricing and anticipated lower exploration and production spending in 2015, Schlumberger decided during the fourth quarter of 2014 to reduce its overall headcount primarily to better align with anticipated activity levels for 2015.  As a result of these reductions, Schlumberger recorded a charge of $296 million in the fourth quarter of 2014.  Depending on how the market situation evolves, further actions may be necessary, which could result in additional charges in future periods.

· During the fourth quarter of 2014, Schlumberger determined that, primarily as a result of the recent decline in commodity prices, the carrying value of its investment in an SPM development project in the Eagle Ford Shale was in excess of its fair value.  Accordingly, Schlumberger recorded a $199 million impairment charge.  The fair value of this investment was estimated based on the projected present value of future cash flows, which included unobservable inputs that required significant judgments.

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
WesternGeco restructuring	$	806	$	25	$	781	Impairments & other
Currency devaluation loss in Venezuela		472		—		472	Impairments & other
Workforce reduction		296		37		259	Impairments & other
Impairment of SPM project		199		72		127	Impairments & other
	$	1,773	$	134	$	1,639

2013

· During the fourth quarter, Schlumberger recorded a $152 million provision relating to accounts receivable from a client in Brazil that filed for bankruptcy.

● During the second quarter, Schlumberger recorded a $1.028 billion gain as a result of the deconsolidation of its subsea business in connection with the formation of the OneSubsea joint venture with Cameron International Corporation (“Cameron”). Refer to Note 4 – Acquisitions for further details.

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● During the second quarter, Schlumberger recorded a $222 million impairment charge relating to an investment in a company involved in developing drilling-related technology and a $142 million impairment charge relating to an investment in a contract drilling business.

● In February 2013, Venezuela’s currency was devalued from the prior exchange rate of 4.3 Bolivar Fuertes per US dollar to 6.3 Bolivar fuertes per US dollar. As a result, Schlumberger recorded a $92 million devaluation charge during the first quarter of 2013.

The following is a summary of these charges and credits:

	(Stated in millions)
	Pretax			Tax		Net			Classification
Gain on formation of OneSubsea joint venture	$	(1,028	)	$	—	$	(1,028	)	Gain on formation of OneSubsea
Impairment of equity-method investments		364			19		345		Impairments & other
Provision for accounts receivable		152			30		122		Cost of revenue
Currency devaluation loss in Venezuela		92			—		92		Impairments & other
	$	(420	)	$	49	$	(469	)

2012

● Schlumberger recorded merger and integration-related charges throughout 2012 of $128 million in connection with its 2010 acquisitions of Smith International, Inc. and Geoservices.

● During the fourth quarter, Schlumberger recorded a charge of $33 million relating to severance in connection with an initiative to rationalize global overhead costs.

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
Merger and integration-related costs	$	128	$	16	$	112	Merger & integration
Workforce reduction		33		6		27	Impairments & other
	$	161	$	22	$	139

4. Acquisitions

Formation of OneSubsea Joint Venture

On June 30, 2013, Schlumberger and Cameron completed the formation of OneSubsea, a joint venture to manufacture and develop products, systems and services for the subsea oil and gas market. Schlumberger and Cameron each contributed all of their respective subsea businesses to the joint venture and Schlumberger made a $600 million cash payment to Cameron. Schlumberger owns 40% of OneSubsea and accounts for this investment under the equity method. Schlumberger recognized a pretax and after-tax gain of $1.028 billion, which is classified as Gain on formation of OneSubsea in the Consolidated Statement of Income, as a result of the deconsolidation of its subsea business. This gain is equal to the difference between the fair value of the Schlumberger subsea business, which was determined based on the present value of its estimated future cash flows, and its carrying value at the time of closing.  

Other

Schlumberger made other acquisitions and investments for cash payments, net of cash acquired, of $1.008 billion during 2014, $610 million during 2013, and $845 million during 2012.  Additionally, during 2014, Schlumberger issued 2.1 million shares of its common stock, valued at $213 million, in connection with an acquisition.  None of these transactions were significant to Schlumberger’s consolidated financial statements, individually or in the aggregate.

On January 20, 2015, Schlumberger announced that it has entered into an agreement to acquire a minority ownership of approximately 45% in Eurasia Drilling Company Limited, the largest provider of onshore drilling services in Russia.  The total cost of this transaction, including an option which will allow Schlumberger, at its election, to purchase the remaining shares during a two-year period commencing on the third anniversary of the closing of the transaction, is approximately $1.7 billion in cash.  This transaction is expected to close during the first quarter of 2015.

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5. Inventories

A summary of inventories follows:

	(Stated in millions)
	2014		2013
Raw materials & field materials	$	2,666	$	2,539
Work in process		273		261
Finished goods		1,689		1,803
	$	4,628	$	4,603

6. Fixed Assets

A summary of fixed assets follows:

	(Stated in millions)
	2014		2013
Land	$	445	$	394
Buildings & improvements		3,733		3,534
Machinery & equipment		31,937		29,332
Seismic vessels		849		1,904
		36,964		35,164
Less accumulated depreciation		21,568		20,068
	$	15,396	$	15,096

The estimated useful lives of Buildings & improvements are primarily 25 to 30 years. The estimated useful lives of Machinery & equipment are primarily 5 to 10 years. Seismic vessels are depreciated over periods ranging from 20 to 30 years.

Depreciation expense relating to fixed assets was $3.2 billion, $3.1 billion and $2.9 billion in 2014, 2013 and 2012, respectively.

7. Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data is as follows:

	(Stated in millions)
	2014			2013
Balance at beginning of year	$	667		$	518
Capitalized in year		321			394
Charged to expense		(195	)		(245	)
	$	793		$	667

8. Goodwill

The changes in the carrying amount of goodwill by reporting unit were as follows:

										(Stated in millions)
	Reservoir Characterization			Drilling			Production			Total
Balance at January 1, 2013	$	3,760		$	8,337		$	2,488			$	14,585
Acquisitions		4			3			336				343
Divestiture of business		—			—			(150	)			(150	)
Other		(27	)		(25	)		(20	)			(72	)
Balance, December 31, 2013		3,737			8,315			2,654				14,706
Acquisitions		15			271			551				837
Reallocation		83			(83	)		—				—
Other		(23	)		(15	)		(18	)			(56	)
Balance, December 31, 2014	$	3,812		$	8,488		$	3,187			$	15,487

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9. Intangible Assets

A summary of intangible assets follows:

	(Stated in millions)
	2014						2013
	Gross Book Value		Accumulated Amortization		Net Book Value		Gross Book Value		Accumulated Amortization		Net Book Value
Technology/Technical Know-How	$	1,747	$	535	$	1,212	$	1,960	$	597	$	1,363
Tradenames		1,641		319		1,322		1,647		257		1,390
Customer Relationships		2,531		523		2,008		2,263		407		1,856
Other		380		268		112		435		335		100
	$	6,299	$	1,645	$	4,654	$	6,305	$	1,596	$	4,709

Amortization expense was $344 million in 2014, $330 million in 2013 and $331 million in 2012.

Based on the carrying value of intangible assets at December 31, 2014, amortization expense for the subsequent five years is estimated to be as follows: 2015: $349 million, 2016: $338 million, 2017: $329 million, 2018: $319 million and 2019: $307 million.

10. Long-term Debt and Debt Facility Agreements

Long-term Debt consists of the following:

	(Stated in millions)
	2014		2013
3.30% Senior Notes due 2021	$	1,597	$	1,596
3.65% Senior Notes due 2023		1,495		1,495
2.75% Guaranteed Notes due 2015 (1)		—		1,373
1.95% Senior Notes due 2016		1,100		1,099
4.20% Senior Notes due 2021		1,100		1,099
1.25% Senior Notes due 2017		1,000		999
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019(1)		628		697
2.65% Senior Notes due 2016 (2)		500		500
Commercial paper borrowings		1,538		—
Other		608		536
	$	10,565	$	10,393

⁽¹⁾ Schlumberger maintains a €5.0 billion Guaranteed Euro Medium Term Note program that provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro, US dollar or other currencies. The following is a summary of outstanding debt that was issued under this program:

· Schlumberger issued €0.5 billion 1.50% Guaranteed Notes due 2019 in the fourth quarter of 2013.  Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate equal to three-month LIBOR plus approximately 64 basis points.

· Schlumberger issued €1.0 billion 2.75% Guaranteed Notes due 2015 in the fourth quarter of 2010. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 2.56%.

⁽²⁾ Schlumberger entered into agreements to swap these dollar notes for euros on the date of issue until maturity, effectively making this a euro-denominated debt on which Schlumberger pays interest in euros at a rate of 2.39%.

Schlumberger Limited fully and unconditionally guarantees the securities issued by certain of its subsidiaries, including securities issued by Schlumberger Investment SA, a wholly-owned finance subsidiary of Schlumberger.

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At December 31, 2014, Schlumberger had separate committed debt facility agreements aggregating $3.9 billion with commercial banks, of which $2.3 billion was available and unused. This included $3.5 billion of committed facilities which supports commercial paper programs, of which $250 million mature in July 2016, $1.75 billion mature in July 2018 and $1.5 billion mature in November 2018. Interest rates and other terms of borrowing under these lines of credit vary from country to country.

Commercial paper borrowings are classified as long-term debt to the extent of their backup by available and unused committed credit facilities maturing in more than one year and to the extent it is Schlumberger’s intent to maintain these obligations for longer than one year. Borrowings under the commercial paper program at December 31, 2014 were $1.5 billion, all of which were classified within Long-term debt in the Consolidated Balance Sheet.  At December 31, 2013, borrowings under the commercial paper program were $95 million, all of which were classified within Long-term debt – current portion in the Consolidated Balance Sheet.

The weighted average interest rate on variable rate debt as of December 31, 2014 was 1.3%.

Long-term Debt as of December 31, 2014, is due as follows: $1.6 billion in 2016, $1.0 billion in 2017, $1.9 billion in 2018, $0.9 billion in 2019, $2.7 billion in 2021, $1.0 billion in 2022 and $1.5 billion in 2023.

The fair value of Schlumberger’s Long-term Debt at December 31, 2014 and December 31, 2013 was $10.7 billion and $10.4 billion, respectively, and was estimated based on quoted market prices.

11. Derivative Instruments and Hedging Activities

Schlumberger is exposed to market risks related to fluctuations in interest rates and foreign currency exchange rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivative transactions for speculative purposes.

Interest Rate Risk

Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio and occasionally interest rate swaps to mitigate the exposure to changes in interest rates.

During the fourth quarter of 2013, Schlumberger entered into a cross currency swap for a notional amount of €0.5 billion in order to hedge changes in the fair value of Schlumberger’s €0.5 billion 1.50% Guaranteed Notes due 2019.  Under the terms of this swap, Schlumberger will receive interest at a fixed rate of 1.50% on the euro notional amount and pay interest at a floating rate of three-month LIBOR plus approximately 64 basis points on the US dollar notional amount.

This cross currency swap is designated as a fair value hedge of the underlying debt.  This derivative instrument is marked to market with gains and losses recognized currently in income to largely offset the respective gains and losses recognized on changes in the fair value of the hedged debt.  

At December 31, 2014, Schlumberger had fixed rate debt aggregating $9.0 billion and variable rate debt aggregating $4.3 billion, after taking into account the effect of the swap.

Short-term investments and Fixed income investments, held to maturity, totaled $4.8 billion at December 31, 2014. The carrying value of these investments approximated fair value, which was estimated using quoted market prices for those or similar investments.

Foreign Currency Exchange Rate Risk

As a multinational company, Schlumberger conducts its business in approximately 85 countries. Schlumberger’s functional currency is primarily the US dollar. Approximately 81% of Schlumberger’s revenues in 2014 was denominated in US dollars. However, outside the United States, a significant portion of Schlumberger’s expenses is incurred in foreign currencies. Therefore, when the US dollar weakens (strengthens) in relation to the foreign currencies of the countries in which Schlumberger conducts business, the US dollar–reported expenses will increase (decrease).  

Schlumberger is exposed to risks on future cash flows to the extent that the local currency is not the functional currency and expenses denominated in local currency are not equal to revenues denominated in local currency. Schlumberger is also exposed to risks on future cash flows relating to certain of its fixed rate debt which is denominated in currencies other than the functional currency. Schlumberger uses foreign currency forward contracts and foreign currency options to provide a hedge against a portion of these cash flow risks. These contracts are accounted for as cash flow hedges, with the effective portion of changes in the fair value of the hedge recorded on the Consolidated Balance Sheet and in Accumulated Other Comprehensive Loss. Amounts recorded in Accumulated

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Other Comprehensive Loss are reclassified into earnings in the same period or periods that the hedged item is recognized in earnings. The ineffective portion of changes in the fair value of hedging instruments, if any, is recorded directly to earnings.

At December 31, 2014, Schlumberger recognized a cumulative net $96 million loss in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges, the majority of which is expected to be reclassified into earnings within the next 12 months.

Schlumberger is exposed to changes in the fair value of assets and liabilities which are denominated in currencies other than the functional currency. While Schlumberger uses foreign currency forward contracts and foreign currency options to economically hedge this exposure as it relates to certain currencies, these contracts are not designated as hedges for accounting purposes. Instead the fair value of the contracts are recorded on the Consolidated Balance Sheet and changes in the fair value are recognized in the Consolidated Statement of Income as are changes in fair value of the hedged item.

At December 31, 2014, contracts were outstanding for the US dollar equivalent of $6.8 billion in various foreign currencies, of which $2.5 billion relate to hedges of debt denominated in currencies other than the functional currency.

The fair values of outstanding derivative instruments are summarized as follows:

	(Stated in millions)
	Fair Value of Derivatives				Consolidated Balance Sheet Classification
Derivative Assets	2014		2013
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	98	Other current assets
Foreign exchange contracts		32		24	Other Assets
Cross currency swap		—		27	Other Assets
		35		149
Derivatives not designated as hedges:
Foreign exchange contracts		5		10	Other current assets
Foreign exchange contracts		—		4	Other Assets
		5		14
	$	40	$	163
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	80	$	14	Accounts payable and accrued liabilities
Foreign exchange contracts		105		1	Other Liabilities
Cross currency swap		42		—	Other Liabilities
		227		15
Derivatives not designated as hedges:
Foreign exchange contracts		28		2	Accounts payable and accrued liabilities
	$	255	$	17

The fair value of all outstanding derivatives is determined using a model with inputs that are observable in the market or can be derived from or corroborated by observable data.

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The effect of derivative instruments designated as fair value hedges and those not designated as hedges on the Consolidated Statement of Income was as follows:

	(Stated in millions)
	Gain (Loss) Recognized in Income								Consolidated Statement of
	2014			2013			2012		Income Classification
Derivatives designated as fair value hedges:
Cross currency swap	$	(82	)	$	15		$	1	Interest expense
Derivatives not designated as hedges:
Foreign exchange contracts	$	(95	)	$	(2	)	$	5	Cost of revenue
Commodity contracts		—			—			1	Cost of revenue
	$	(95	)	$	(2	)	$	6

12. Stockholders’ Equity

Schlumberger is authorized to issue 4,500,000,000 shares of common stock, par value $0.01 per share, of which 1,275,312,404 and 1,307,330,369 shares were outstanding on December 31, 2014 and 2013, respectively. Holders of common stock are entitled to one vote for each share of stock held. Schlumberger is also authorized to issue 200,000,000 shares of preferred stock, par value $0.01 per share, which may be issued in series with terms and conditions determined by the Board of Directors. No shares of preferred stock have been issued.

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
	Currency Translation Adjustments			Cash Flow Hedges			Pension and  Other Postretirement Benefit Plans			Unrealized  Gains on Marketable Securities			Total
Balance, January 1, 2012	$	(993	)	$	(26	)	$	(2,538	)	$	—		$	(3,557	)
Other comprehensive income (loss) before reclassifications		76			92			(1,016	)		141			(707	)
Amounts reclassified from accumulated other comprehensive loss		—			(36	)		312			—			276
Income taxes		—			—			100			—			100
Balance, December 31, 2012		(917	)		30			(3,142	)		141			(3,888	)
Other comprehensive income (loss) before reclassifications		(151	)		49			1,328			35			1,261
Amounts reclassified from accumulated other comprehensive loss		—			(50	)		425			—			375
Income taxes		—			—			(302	)		—			(302	)
Balance, December 31, 2013		(1,068	)		29			(1,691	)		176			(2,554	)
Other comprehensive income (loss) before reclassifications		(463	)		(238	)		(1,285	)		(166	)		(2,152	)
Amounts reclassified from accumulated other comprehensive loss		—			113			305			—			418
Income taxes		—			—			82			—			82
Balance, December 31, 2014	$	(1,531	)	$	(96	)	$	(2,589	)	$	10		$	(4,206	)

Other comprehensive loss was $1.652 billion in 2014 and $331 million in 2012.  Other comprehensive income was $1.334 billion in 2013.

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13. Stock-based Compensation Plans

Schlumberger has three types of stock-based compensation programs: (i) stock options, (ii) a restricted stock, restricted stock unit and performance share unit program (collectively referred to as “restricted stock”) and (iii) a discounted stock purchase plan (“DSPP”).

Stock Options

Key employees are granted stock options under Schlumberger stock option plans. For all of the stock options granted, the exercise price equals the average of the high and low sales prices of Schlumberger stock on the date of grant; an option’s maximum term is ten years, and options generally vest in increments over five years.

The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions and resulting weighted-average fair value per share:

	2014			2013			2012
Dividend yield		1.6	%		1.7	%		1.5	%
Expected volatility		37	%		38	%		39	%
Risk free interest rate		2.2	%		1.2	%		1.5	%
Expected option life in years		7.0			7.0			6.9
Weighted-average fair value per share	$	34.20		$	23.93		$	25.26

The following table summarizes information concerning options outstanding and options exercisable as of December 31, 2014:

	(Shares stated in thousands)
	Options Outstanding						Options Exercisable
Exercise prices range	Options Outstanding		Weighted- average remaining contractual life (in years)		Weighted- average exercise price		Options Exercisable		Weighted- average exercise price
$32.45 - $67.87		6,553		3.2	$	51.50		6,295	$	51.03
$68.51 - $70.93		8,346		6.9	$	69.82		3,648	$	69.02
$72.11 - $78.31		7,553		7.2	$	72.56		1,915	$	72.47
$83.88 - $84.93		8,045		5.2	$	84.17		5,118	$	84.34
$88.61 - $114.83		8,086		8.1	$	97.78		1,566	$	95.92
		38,583		6.2	$	76.10		18,542	$	69.77

The weighted average remaining contractual life of stock options exercisable as of December 31, 2014 was 4.2 years.

The following table summarizes stock option activity during the years ended December 31, 2014, 2013 and 2012:

	(Shares stated in thousands)
	2014					2013					2012
	Shares			Weighted- average exercise price		Shares			Weighted- average exercise price		Shares			Weighted- average exercise price
Outstanding at beginning of year		41,939		$	70.33		42,059		$	67.77		40,027		$	63.84
Granted		6,105		$	99.04		6,570		$	72.16		8,664		$	72.04
Exercised		(8,269	)	$	64.19		(5,168	)	$	51.73		(4,171	)	$	39.07
Forfeited		(1,192	)	$	73.56		(1,522	)	$	70.57		(2,461	)	$	67.50
Outstanding at year-end		38,583		$	76.10		41,939		$	70.33		42,059		$	67.77

The aggregate intrinsic value of stock options outstanding as of December 31, 2014 was $459 million.

The aggregate intrinsic value of stock options exercisable as of December 31, 2014 was $306 million.

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The total intrinsic value of options exercised during the years ended December 31, 2014, 2013 and 2012 was $314 million, $176 million and $142 million, respectively.

Restricted Stock

During 2013, Schlumberger began granting performance share units to certain executives.  The number of shares earned is determined at the end of each performance period, which is generally three years, based on Schlumberger’s achievement of a predefined return on capital employed (“ROCE”), as defined in the underlying performance share unit agreement.  In the event the ROCE exceeds the predefined target, shares for up to the maximum of 250% of the target award may be granted.  In the event the ROCE falls below the predefined target, a reduced number of shares may be granted.  If the ROCE falls below the threshold award performance level, no shares will be granted.  As of December 31, 2014, performance share units of 0.6 million were outstanding based on the achievement of 100% of target.

All other restricted stock awards generally vest at the end of three years.

Restricted stock awards do not pay dividends or allow voting rights during the performance period.  Accordingly, the fair value of the restricted stock award is the quoted market price of Schlumberger’s stock on the date of grant less the present value of the expected dividends not received during the vesting period.

The following table summarizes information about all restricted stock transactions:

	(Shares stated in thousands)
	2014					2013					2012
	Restricted Stock			Weighted Average Grant Date Fair Value		Restricted Stock			Weighted Average Grant Date Fair Value		Restricted Stock			Weighted Average Grant Date Fair Value
Unvested at beginning of year		4,171		$	76.01		3,566		$	73.62		2,433		$	72.25
Granted		1,341			96.08		1,949			75.65		1,668			71.09
Vested		(1,186	)		81.59		(958	)		66.98		(351	)		52.26
Forfeited		(188	)		78.68		(386	)		74.53		(184	)		73.38
Unvested at end of year		4,138		$	80.80		4,171		$	76.01		3,566		$	73.62

Discounted Stock Purchase Plan

Under the terms of the DSPP, employees can choose to have a portion of their earnings withheld, subject to certain restrictions, to purchase Schlumberger common stock. The purchase price of the stock is 92.5% of the lower of the stock price at the beginning or end of the plan period at six-month intervals.

The fair value of the employees’ purchase rights under the DSPP was estimated using the Black-Scholes model with the following assumptions and resulting weighted average fair value per share:

	2014			2013			2012
Dividend yield		1.6	%		1.7	%		1.6	%
Expected volatility		19	%		24	%		41	%
Risk free interest rate		0.1	%		0.1	%		0.2	%
Weighted average fair value per share	$	12.67		$	9.91		$	12.71

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Total Stock-based Compensation Expense

The following summarizes stock-based compensation expense recognized in income:

	(Stated in millions)
	2014		2013		2012
Stock options	$	177	$	165	$	203
Restricted stock		114		110		82
DSPP		38		40		50
	$	329	$	315	$	335

At December 31, 2014, there was $514 million of total unrecognized compensation cost related to nonvested stock-based compensation arrangements, of which $238 million is expected to be recognized in 2015, $152 million in 2016, $73 million in 2017, $43 million in 2018 and $8 million in 2019.

As of December 31, 2014, approximately 33 million shares of Schlumberger common stock were available for future grants under Schlumberger’s stock-based compensation programs.

14.  Income Taxes

Schlumberger operates in more than 100 tax jurisdictions, where statutory tax rates generally vary from 0% to 40%.

Income from continuing operations before taxes which were subject to United States and non-United States income taxes for each of the three years ended December 31, were as follows:

	(Stated in millions)
	2014		2013		2012
United States	$	1,990	$	1,904	$	1,980
Outside United States		5,649		6,787		4,979
	$	7,639	$	8,691	$	6,959

Schlumberger recorded pretax charges of $1.773 billion in 2014 ($289 million in the US and $1.484 billion outside of the US). Schlumberger recorded net pretax credits of $420 million in 2013 ($53 million of charges in the US and $473 million of net credits outside the US) and $161 million of pretax charges in 2012 ($52 million in the US and $109 million outside the US). These charges and credits are included in the table above and are more fully described in Note 3 – Charges and Credits.

The components of net deferred tax assets (liabilities) were as follows:

	(Stated in millions)
	2014			2013
Postretirement benefits	$	327		$	236
Intangible assets		(1,435	)		(1,502	)
Investments in non-US subsidiaries		(227	)		(282	)
Other, net		183			128
	$	(1,152	)	$	(1,420	)

The above deferred tax balances at December 31, 2014 and 2013 were net of valuation allowances relating to net operating losses in certain countries of $190 million and $238 million, respectively.

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The components of Taxes on income were as follows:

	(Stated in millions)
	2014			2013			2012
Current:
United States - Federal	$	718		$	682		$	698
United States - State		51			60			53
Outside United States		1,380			1,211			1,025
	$	2,149		$	1,953		$	1,776
Deferred:
United States - Federal	$	(194	)	$	(109	)	$	(105	)
United States - State		(9	)		(4	)		(7	)
Outside United States		(12	)		34			22
Valuation allowance		(6	)		(26	)		14
	$	(221	)	$	(105	)	$	(76	)
	$	1,928		$	1,848		$	1,700

A reconciliation of the United States statutory federal tax rate (35%) to the consolidated effective tax rate is:

	2014			2013			2012
US statutory federal rate		35	%		35	%		35	%
Non-US income taxed at different rates		(11	)		(12	)		(10	)
Charges and credits (See Note 3)		3			(2	)		—
Other		(2	)		—			(1	)
		25	%		21	%		24	%

A number of the jurisdictions in which Schlumberger operates have tax laws that are not fully defined and are evolving. Schlumberger’s tax filings are subject to regular audit by the tax authorities. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits.

A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2014, 2013 and 2012 is as follows:

	(Stated in millions)
	2014			2013			2012
Balance at beginning of year	$	1,452		$	1,453		$	1,353
Additions based on tax positions related to the current year		154			146			156
Additions for tax positions of prior years		96			109			98
Additions related to acquisitions		43			—			—
Impact of changes in exchange rates		(62	)		(47	)		12
Settlements with tax authorities		(27	)		(64	)		(17	)
Reductions for tax positions of prior years		(212	)		(109	)		(103	)
Reductions due to the lapse of the applicable statute of limitations		(42	)		(36	)		(46	)
Balance at end of year	$	1,402		$	1,452		$	1,453

The amounts above exclude accrued interest and penalties of $243 million, $253 million and $250 million at December 31, 2014, 2013 and 2012, respectively.

Schlumberger classifies interest and penalties relating to uncertain tax positions within Taxes on income in the Consolidated Statement of Income. During 2014, 2013 and 2012, Schlumberger recognized $19 million, $30 million and $21 million in interest and penalties, respectively.

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The following table summarizes the tax years that are either currently under audit or remain open and subject to examination by the tax authorities in the most significant jurisdictions in which Schlumberger operates:

Brazil	2009 - 2014
Canada	2007 - 2014
Ecuador	2001 - 2014
Mexico	2007 - 2014
Norway	2013 - 2014
Russia	2011 - 2014
Saudi Arabia	2001 - 2014
United Kingdom	2009 - 2014
United States	2011 - 2014

In certain of the jurisdictions noted above, Schlumberger operates through more than one legal entity, each of which may have different open years subject to examination. The table above presents the open years subject to examination for the most material of the legal entities in each jurisdiction. Additionally, it is important to note that tax years are technically not closed until the statute of limitations in each jurisdiction expires. In the jurisdictions noted above, the statute of limitations can extend beyond the open years subject to examination.

15. Leases and Lease Commitments

Total rental expense was $2.1 billion in 2014, $1.9 billion in 2013, and $1.9 billion in 2012.

Future minimum rental commitments under noncancelable operating leases for each of the next five years are as follows:

(Stated in millions)
2015	$	330
2016		259
2017		197
2018		156
2019		134
Thereafter		554
	$	1,630

16. Contingencies

In 2009, United States officials began a grand jury investigation and an associated regulatory inquiry, both related to certain historical Schlumberger operations in countrieswhere Schlumberger no longer operates that are subject to United States trade and economic sanctions. Governmental agencies and authorities have a broad range of civil and criminal penalties that they may seek to impose for violations of trade and economic sanction laws including, but not limited to, disgorgement, fines, penalties and modifications to business practices. In recent years, these agencies and authorities have obtained a wide range of penalties in settlements with companies arising from trade and economic sanction investigations, including in some cases forfeitures, fines and other penalties in the tens and hundreds of millions of dollars. Schlumberger continues to cooperate and has been discussing the resolution of this matter with the governmental authorities. During the second quarter of 2014, these discussions progressed to a point whereby Schlumberger determined that it was appropriate to increase its liability for this contingency.  Accordingly, Schlumberger recorded a $205 million charge, which is reflected within Loss from discontinued operations in the Consolidated Statement of Income. However, no certainty exists that a settlement will be reached or if so, the amount of any such settlement.  Therefore, the ultimate loss could be greater or less than the amount accrued.

Schlumberger and its subsidiaries are party to various other legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to these other legal proceedings is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.  

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17. Segment Information

Schlumberger’s segments are as follows:

● Reservoir Characterization Group – Consists of the principal technologies involved in finding and defining hydrocarbon resources. These include WesternGeco, Wireline, Testing Services, Schlumberger Information Services and PetroTechnical Services.

● Drilling Group – Consists of the principal technologies involved in the drilling and positioning of oil and gas wells.  These include Bits & Advanced Technologies, M-I SWACO, Geoservices, Drilling & Measurements, Drilling Tools & Remedial Services, Saxon Rig Services and Integrated Project Management well construction projects.

● Production Group – Consists of the principal technologies involved in the lifetime production of oil and gas reservoirs. These include Well Services, Completions, Artificial Lift, Well Intervention, Water Services, and the Schlumberger Production Management field production projects.

Financial information for the years ended December 31, 2014, 2013 and 2012, by segment, is as follows:

	(Stated in millions)
	2014
	Revenue			Income before taxes			Assets		Depreciation  and Amortization		Capital Expenditures
Reservoir Characterization	$	12,224		$	3,607		$	8,596	$	1,391	$	1,152
Drilling		18,462			3,872			11,378		1,174		1,328
Production		18,111			3,227			11,848		1,133		1,246
Eliminations & other		(217	)		(130	)		1,577		198		250
Pretax operating income					10,576
Goodwill and intangible assets								20,142
All other assets								2,185
Corporate (1)					(848	)		11,178		198
Interest income (2)					31
Interest expense (3)					(347	)
Charges & credits (4)					(1,773	)
	$	48,580		$	7,639		$	66,904	$	4,094	$	3,976

	(Stated in millions)
	2013
	Revenue			Income before taxes			Assets		Depreciation  and Amortization		Capital Expenditures
Reservoir Characterization	$	12,463		$	3,660		$	8,918	$	1,338	$	1,275
Drilling		17,099			3,293			10,940		1,077		1,291
Production		15,927			2,619			11,185		1,039		1,204
Eliminations & other		(223	)		(228	)		1,974		217		173
Pretax operating income					9,344
Goodwill and intangible assets								19,415
All other assets								2,618
Corporate (1)					(726	)		12,050		208
Interest income (2)					22
Interest expense (3)					(369	)
Charges & credits (4)					420
	$	45,266		$	8,691		$	67,100	$	3,879	$	3,943

53

	(Stated in millions)
	2012
	Revenue			Income before taxes			Assets		Depreciation and Amortization		Capital Expenditures
Reservoir Characterization	$	11,360		$	3,080		$	8,501	$	1,309	$	1,235
Drilling		15,691			2,778			11,316		1,072		1,668
Production		14,802			2,327			9,889		877		1,439
Eliminations & other		(122	)		(68	)		1,920		191		352
Pretax operating income					8,117
Goodwill and intangible assets								19,387
Discontinued operations assets								246
All other assets								2,267
Corporate (1)					(696	)		8,021		198
Interest income (2)					30
Interest expense (3)					(331	)
Charges & credits (4)					(161	)
	$	41,731		$	6,959		$	61,547	$	3,647	$	4,694

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.

⁽²⁾ Interest income excludes amounts which are included in the segments’ income (2014: $20 million; 2013: $11 million; 2012: $- million).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income (2014: $22 million; 2013: $22 million; 2012: $9 million).

⁽⁴⁾ See Note 3 – Charges and Credits.

Segment assets consist of receivables, inventories, fixed assets, multiclient seismic data and SPM investments.

Depreciation and amortization includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

Revenue by geographic area for the years ended December 31, 2014, 2013 and 2012 is as follows:

	(Stated in millions)
	2014		2013		2012
North America	$	16,151	$	13,897	$	13,535
Latin America		7,699		7,754		7,554
Europe/CIS/Africa		12,515		12,411		11,510
Middle East & Asia		11,875		10,767		8,717
Eliminations & other		340		437		415
	$	48,580	$	45,266	$	41,731

Revenue is based on the location where services are provided.

During each of the three years ended December 31, 2014, 2013 and 2012, no single customer exceeded 10% of consolidated revenue.

Schlumberger did not have revenue from third-party customers in its country of domicile during the last three years. Revenue in the United States in 2014, 2013 and 2012 was $14.0 billion, $12.0 billion and $11.8 billion, respectively.

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Fixed Assets less accumulated depreciation by geographic area are as follows:

	(Stated in millions)
	2014		2013		2012
North America	$	4,885	$	4,858	$	4,868
Latin America		1,969		1,889		1,788
Europe/CIS/Africa		3,640		3,452		3,414
Middle East & Asia		3,446		2,991		2,908
Unallocated (1)		1,456		1,906		1,802
	$	15,396	$	15,096	$	14,780

⁽¹⁾ Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

18. Pension and Other Benefit Plans

Pension Plans

Schlumberger sponsors several defined benefit pension plans that cover substantially all US employees hired prior to October 1, 2004. The benefits are based on years of service and compensation, on a career-average pay basis.

In addition to the United States defined benefit pension plans, Schlumberger sponsors several other international defined benefit pension plans. The most significant of these international plans are the International Staff Pension Plan and the UK pension plan (collectively, the “International plans”). The International Staff Pension Plan covers certain international employees hired prior to July 1, 2014 and is based on years of service and compensation on a career-average pay basis. The UK plan covers employees hired prior to April 1, 1999, and is based on years of service and compensation, on a final salary basis.

The weighted-average assumed discount rate, compensation increases and the expected long-term rate of return on plan assets used to determine the net pension cost for the US and International plans were as follows:

	US									International
	2014			2013			2012			2014			2013			2012
Discount rate		4.85	%		4.25	%		5.50	%		4.76	%		4.38	%		4.95	%
Compensation increases		4.00	%		4.00	%		4.00	%		4.80	%		4.83	%		4.91	%
Return on plan assets		7.25	%		7.50	%		7.50	%		7.50	%		7.50	%		7.50	%

Net pension cost for 2014, 2013 and 2012 included the following components:

	(Stated in millions)
	US									International
	2014			2013			2012			2014			2013			2012
Service cost - benefits earned during the period	$	72		$	80		$	68		$	126		$	127		$	86
Interest cost on projected benefit obligation		164			150			152			288			253			241
Expected return on plan assets		(208	)		(200	)		(185	)		(450	)		(384	)		(328	)
Amortization of net loss		82			122			95			94			155			76
Amortization of prior service cost		12			12			12			120			117			120
	$	122		$	164		$	142		$	178		$	268		$	195

The weighted-average assumed discount rate and compensation increases used to determine the projected benefit obligations for the US and International plans were as follows:

	US						International
	2014			2013			2014			2013
Discount rate		4.15	%		4.85	%		4.07	%		4.76	%
Compensation increases		4.00	%		4.00	%		4.79	%		4.80	%

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The changes in the projected benefit obligation, plan assets and funded status of the plans were as follows:

	(Stated in millions)
	US						International
	2014			2013			2014			2013
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	$	3,418		$	3,558		$	5,981		$	5,798
Service cost		72			80			126			127
Interest cost		164			150			288			253
Contributions by plan participants		—			—			122			104
Actuarial losses (gains)		627			(232	)		1,000			(168	)
Currency effect		—			—			(90	)		30
Benefits paid		(144	)		(138	)		(178	)		(163	)
Projected benefit obligation at end of year	$	4,137		$	3,418		$	7,249		$	5,981
Change in Plan Assets
Plan assets at fair value at beginning of year	$	3,269		$	2,910		$	6,246		$	5,120
Actual return on plan assets		339			356			502			836
Currency effect		—			—			(102	)		35
Company contributions		85			141			240			314
Contributions by plan participants		—			—			122			104
Benefits paid		(144	)		(138	)		(178	)		(163	)
Plan assets at fair value at end of year	$	3,549		$	3,269		$	6,830		$	6,246
(Unfunded Liability) / Asset	$	(588	)	$	(149	)	$	(419	)	$	265
Amounts Recognized in Balance Sheet
Postretirement Benefits	$	(588	)	$	(149	)	$	(546	)	$	(5	)
Other Assets		—			—			127			270
	$	(588	)	$	(149	)	$	(419	)	$	265
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	1,104		$	687		$	1,658		$	882
Prior service cost		66			78			357			418
	$	1,170		$	765		$	2,015		$	1,300
Accumulated benefit obligation	$	3,805		$	3,158		$	6,793		$	5,593

The unfunded liability represents the difference between the plan assets and the projected benefit obligation (“PBO”). The PBO represents the actuarial present value of benefits based on employee service and compensation and includes an assumption about future compensation levels. The accumulated benefit obligation represents the actuarial present value of benefits based on employee service and compensation, but does not include an assumption about future compensation levels.

The weighted-average allocation of plan assets and the target allocations by asset category are as follows:

	US									International
	Target			2014			2013			Target			2014			2013
Equity securities		37 - 56	%		48	%		50	%		50 - 71	%		58	%		60	%
Debt securities		35 - 62			42			40			20 - 35			32			31
Cash and cash equivalents		0  -  3			2			2			0  -  5			4			3
Alternative investments		0  -  8			8			8			0 - 25			6			6
		100	%		100	%		100	%		100	%		100	%		100	%

Asset performance is monitored frequently with an overall expectation that plan assets will meet or exceed the weighted index of its target asset allocation and component benchmark over rolling five-year periods.

The expected long-term rate of return on assets assumptions reflect the average rate of earnings expected on funds invested or to be invested. The assumptions have been determined based on expectations regarding future rates of return for the portfolio considering the asset allocation and related historical rates of return. The appropriateness of the assumptions is reviewed annually.

56

The fair value of Schlumberger’s pension plan assets at December 31, 2014 and 2013, by asset category, is presented below and was determined based on valuation techniques categorized as follows:

● Level One: The use of quoted prices in active markets for identical instruments.

● Level Two: The use of quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or other inputs that are observable in the market or can be corroborated by observable market data.

● Level Three: The use of significant unobservable inputs that typically require the use of management’s estimates of assumptions that market participants would use in pricing.

	(Stated in millions)
	US Plan Assets
	2014								2013
	Total		Level One		Level Two		Level Three		Total		Level One		Level Two		Level Three
Asset Category:
Cash and Cash Equivalents	$	59	$	40	$	19	$	—	$	77	$	24	$	53	$	—
Equity Securities:
US (a)		1,149		622		527				1,068		625		443
International (b)		552		433		119				572		454		118
Debt Securities:
Corporate bonds (c)		654				654				548				548
Government and government-related debt securities (d)		735		175		560				639		161		478
Collateralized mortgage obligations and mortgage backed securities (e)		107				107				99				99
Alternative Investments:
Private equity (f)		210						210		204						204
Real estate (g)		83						83		62						62
Total	$	3,549	$	1,270	$	1,986	$	293	$	3,269	$	1,264	$	1,739	$	266

	(Stated in millions)
	International Plan Assets
	2014								2013
	Total		Level One		Level Two		Level Three		Total		Level One		Level Two		Level Three
Asset Category:
Cash and Cash Equivalents	$	264	$	174	$	90	$	—	$	267	$	127	$	140	$	—
Equity Securities:
US (a)		2,432		1,757		675				2,175		1,603		572
International (b)		1,534		1,047		487				1,566		990		576
Debt Securities:
Corporate bonds (c)		780				780				576				576
Government and government-related debt securities (d)		1,181		8		1,173				997		6		991
Collateralized mortgage obligations and mortgage backed securities (e)		256				256				301				301
Alternative Investments:
Private equity (f)		246						246		206						206
Real estate (g)		49						49		60						60
Other		88						88		98						98
Total	$	6,830	$	2,986	$	3,461	$	383	$	6,246	$	2,726	$	3,156	$	364

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^(a) US equities include companies that are well diversified by industry sector and equity style (i.e., growth and value strategies). Active and passive management strategies are employed. Investments are primarily in large capitalization stocks and, to a lesser extent, mid- and small-cap stocks.

^(b) International equities are invested in companies that are traded on exchanges outside the US and are well diversified by industry sector, country and equity style. Active and passive strategies are employed. The vast majority of the investments are made in companies in developed markets with a small percentage in emerging markets.

^(c) Corporate bonds consist primarily of investment grade bonds from diversified industries.

^(d) Government and government-related debt securities are comprised primarily of inflation-protected US treasuries and, to a lesser extent, other government-related securities.

^(e) Collateralized mortgage obligations and mortgage backed-securities are debt obligations that represent claims to the cash flows from pools of mortgage loans which are purchased from banks, mortgage companies, and other originators and then assembled into pools by governmental, quasi-governmental and private entities.

^(f) Private equity includes investments in several fund of funds limited partnerships.

^(g) Real estate primarily includes investments in real estate limited partnerships, concentrated in commercial real estate.

Schlumberger’s funding policy is to annually contribute amounts that are based upon a number of factors including the actuarial accrued liability, amounts that are deductible for income tax purposes, legal funding requirements and available cash flow. Schlumberger currently anticipates contributing approximately $400 million to its postretirement benefit plans in 2015, subject to market and business conditions.

Postretirement Benefits Other Than Pensions

Schlumberger provides certain healthcare benefits to certain former US employees who have retired.  During the fourth quarter of 2014 Schlumberger announced that, effective April 1, 2015, it will change the way it provides healthcare coverage to certain retirees who are age 65 and over.  Under the amended plan, these retirees will transfer to individual coverage under the Medicare Exchange.  Schlumberger will subsidize the cost of the program by providing these retirees with a Health Reimbursement Account.  The annual subsidy may be increased based on medical cost inflation, but it will not be increased more than 5% in any given year.  The benefit obligation relating to these retirees represents approximately 66% of Schlumberger’s total accumulated benefit obligation for postretirement benefits other than pensions as of December 31, 2014.

The actuarial assumptions used to determine the accumulated postretirement benefit obligation and net periodic benefit cost for the US postretirement medical plan were as follows:

	Benefit Obligation at December 31,						Net Periodic Benefit Cost for the year
	2014			2013			2014			2013			2012
Discount rate		4.15	%		4.85	%		4.85	%		4.25	%		5.00	%
Return on plan assets		—			—			7.00	%		7.00	%		7.00	%
Current medical cost trend rate		7.00	%		7.25	%		7.25	%		7.50	%		8.00	%
Ultimate medical cost trend rate		5.00	%		5.00	%		5.00	%		5.00	%		5.00	%
Year that the rate reaches the ultimate trend rate		2023			2023			2023			2023			2018

The net periodic benefit cost for the US postretirement medical plan included the following components:

	(Stated in millions)
	2014			2013			2012
Service cost — benefits earned during the period	$	43		$	48		$	29
Interest cost on projected benefit obligation		60			56			58
Expected return on plan assets		(45	)		(37	)		(30	)
Amortization of net loss		1			23			16
Amortization of prior service credit		(4	)		(4	)		(7	)
	$	55		$	86		$	66

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The changes in the accumulated postretirement benefit obligation, plan assets and funded status were as follows:

	(Stated in millions)
	2014			2013
Change in Accumulated Postretirement Benefit Obligation
Benefit obligation at beginning of year	$	1,247		$	1,410
Service cost		43			48
Interest cost		60			56
Contributions by plan participants		6			6
Actuarial losses (gains)		210			(232	)
Benefits paid		(46	)		(41	)
Plan amendments		(299	)		—
Benefit obligation at end of year	$	1,221		$	1,247
Change in Plan Assets
Plan assets at fair value at beginning of year	$	731		$	576
Company contributions		65			83
Contributions by plan participants		6			6
Benefits paid		(46	)		(41	)
Actual return on plan assets		98			107
Plan assets at fair value at end of year	$	854		$	731
Unfunded Liability	$	(367	)	$	(516	)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	242		$	87
Prior service credit		(307	)		(12	)
	$	(65	)	$	75

The unfunded liability is included in Postretirement Benefits in the Consolidated Balance Sheet.

The assets of the US postretirement medical plan are invested 60% in equity securities and 40% in debt securities at December 31, 2014. The fair value of these assets was primarily determined based on Level Two valuation techniques.

Assumed health care cost trend rates have a significant effect on the amounts reported for the US postretirement medical plan. A one percentage point change in assumed health care cost trend rates would have the following effects:

	(Stated in millions)
	One percentage point increase		One percentage point decrease
Effect on total service and interest cost components	$	42	$	(17	)
Effect on accumulated postretirement benefit obligation	$	37	$	(33	)

Other Information

The expected benefits to be paid under the US and International pension plans as well as the postretirement medical plan were as follows:

	(Stated in millions)
	Pension Benefits				Postretirement Medical Plan
	US		International
2015	$	155	$	222	$	46
2016		162		240		49
2017		171		256		52
2018		181		274		56
2019		190		290		59
2020 - 2024		1,112		1,675		344

59

Included in Accumulated other comprehensive loss at December 31, 2014 are non-cash pretax charges which have not yet been recognized in net periodic benefit cost. The estimated portion of each component of Accumulated other comprehensive loss which is expected to be recognized as a component of net periodic benefit cost during the year ending December 31, 2015 is as follows:

	(Stated in millions)
	Pension Plans		Postretirement Medical Plan
Net actuarial losses	$	274	$	17
Prior service cost (credit)	$	133	$	(32	)

In addition to providing defined pension benefits and a postretirement medical plan, Schlumberger and its subsidiaries have other deferred benefit programs, primarily profit sharing and defined contribution pension plans. Expenses for these programs were $749 million, $671 million and $620 million in 2014, 2013 and 2012, respectively.

19. Supplementary Information

Cash paid for interest and income taxes was as follows:

	(Stated in millions)
	2014		2013		2012
Interest	$	389	$	369	$	313
Income taxes	$	2,048	$	1,729	$	1,736

Interest and other income includes the following:

	(Stated in millions)
	2014		2013		2012
Interest income	$	51	$	33	$	30
Earnings of equity method investments		240		132		142
	$	291	$	165	$	172

The change in Allowance for doubtful accounts is as follows:

	(Stated in millions)
	2014			2013			2012
Balance at beginning of year	$	384		$	202		$	177
Provision		39			205			37
Amounts written off		(148	)		(23	)		(10	)
Divestiture of business		—			—			(2	)
Balance at end of year	$	275		$	384		$	202

Accounts payable and accrued liabilities are summarized as follows:

	(Stated in millions)
	2014		2013
Payroll, vacation and employee benefits	$	1,899	$	1,910
Trade		4,344		4,155
Other		3,003		2,772
	$	9,246	$	8,837

20. Discontinued Operations

During the second quarter of 2013, Schlumberger completed the wind down of its operations in Iran and, therefore, has classified the historical results of this business as a discontinued operation.

60

During the second quarter of 2012, Schlumberger sold its Wilson distribution business to National Oilwell Varco Inc. (“NOV”) for $906 million in cash, resulting in a pretax gain of $137 million ($16 million after-tax). During the third quarter of 2012, Schlumberger completed the sale of its 56% interest in CE Franklin Ltd. to NOV for $122 million in cash, resulting in a pretax gain of $30 million ($12 million after-tax). As Wilson and CE Franklin comprised Schlumberger’s entire Distribution segment, the results of this entire segment have been classified as discontinued operations in the Consolidated Statement of Income.

The following table summarizes the results of these discontinued operations:

	(Stated in millions)
	2014			2013			2012
Revenue	$	—		$	102		$	1,399
(Loss) income before taxes	$	(205	)	$	(63	)	$	274
Tax expense		—			(6	)		(37	)
Net income attributable to noncontrolling interests		—			—			(5	)
Gain on divestitures, net of tax		—			—			28
Income (loss) from discontinued operations	$	(205	)	$	(69	)	$	260

61

Management’s Report on Internal Control Over Financial Reporting

Schlumberger management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13a–15(f) of the Securities Exchange Act of 1934, as amended. Schlumberger’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Schlumberger management assessed the effectiveness of its internal control over financial reporting as of December 31, 2014. In making this assessment, it used the criteria set forth in 2013 by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control—Integrated Framework. Based on this assessment Schlumberger’s management has concluded that, as of December 31, 2014, its internal control over financial reporting is effective based on those criteria.

The effectiveness of Schlumberger’s internal control over financial reporting as of December 31, 2014, has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears herein.

62

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders

of Schlumberger Limited

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income, of comprehensive income, of stockholders’ equity and of cash flows present fairly, in all material respects, the financial position of Schlumberger Limited and its subsidiaries at December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2014, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013. The Company’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express opinions on these financial statements and on the Company’s internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Houston, Texas

January 29, 2015

63

Quarterly Results

(Unaudited)

The following table summarizes Schlumberger’s results by quarter for the years ended December 31, 2014 and 2013.

	(Stated in millions except per share amounts)
			Gross      Margin (1), (2)		Net Income attributable to Schlumberger (2)		Earnings per share of Schlumberger (2)
	Revenue						Basic		Diluted
Quarters-2014
First	$	11,239	$	2,494	$	1,592	$	1.22	$	1.21
Second		12,054		2,785		1,595		1.23		1.21
Third		12,646		2,957		1,949		1.51		1.49
Fourth (3)		12,641		2,950		302		0.24		0.23
	$	48,580	$	11,182	$	5,438	$	4.20	$	4.16
Quarters-2013
First (4)	$	10,570	$	2,161	$	1,259	$	0.95	$	0.94
Second (5)		11,182		2,470		2,095		1.58		1.57
Third		11,608		2,682		1,715		1.30		1.29
Fourth (6)		11,906		2,623		1,664		1.27		1.26
	$	45,266	$	9,935	$	6,732	$	5.09	$	5.05

⁽¹⁾ Gross margin equals Revenue less Cost of revenue.

⁽²⁾ Amounts may not add due to rounding.

⁽³⁾ Net income in the fourth quarter of 2014 includes after-tax charges of $1.639 billion.

⁽⁴⁾ Net income in the first quarter of 2013 includes after-tax charges of $92 million.

⁽⁵⁾ Net income in the second quarter of 2013 includes after-tax credits of $683 million.

⁽⁶⁾ Net income in the second quarter of 2013 includes after-tax credits of $122 million.

* Mark of Schlumberger

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None.

Item 9A. Controls and Procedures.

Schlumberger has carried out an evaluation under the supervision and with the participation of Schlumberger’s management, including the Chief Executive Officer (“CEO”) and the Chief Financial Officer (“CFO”), of the effectiveness of Schlumberger’s “disclosure controls and procedures” (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”)) as of the end of the period covered by this report. Based on this evaluation, the CEO and the CFO have concluded that, as of the end of the period covered by this report, Schlumberger’s disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed in the reports that Schlumberger files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Schlumberger’s disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is accumulated and communicated to its management, including the CEO and the CFO, as appropriate, to allow timely decisions regarding required disclosure. There has been no change in Schlumberger’s internal control over financial reporting that occurred during the fourth quarter of 2014 that has materially affected, or is reasonably likely to materially affect, Schlumberger’s internal control over financial reporting.

Item 9B. Other Information.

None.

64

PART III

Item 10. Directors, Executive Officers and Corporate Governance of Schlumberger.

See “Item 1. Business – Executive Officers of Schlumberger” of this Report for Item 10 information regarding executive officers of Schlumberger. The information under the captions “Election of Directors,” “Section 16(a) Beneficial Ownership Reporting Compliance,” “Corporate Governance – Director Nominations” and “Corporate Governance – Board Committees – Audit Committee” in Schlumberger’s 2015 Proxy Statement is incorporated herein by reference.

Schlumberger has a Code of Conduct that applies to all of its directors, officers and employees, including its principal executive, financial and accounting officers, or persons performing similar functions. Schlumberger’s Code of Conduct is posted on its website at www.slb.com/about/codeofconduct.aspx. Schlumberger intends to disclose future amendments to the Code of Conduct and any grant of a waiver from a provision of the Code of Conduct requiring disclosure under applicable SEC rules at www.slb.com/about/codeofconduct.aspx.

Item 11. Executive Compensation.

The information set forth under the captions “Compensation Discussion and Analysis,” “Executive Compensation Tables and Accompanying Narrative,” “Compensation Committee Report” and “Director Compensation in Fiscal Year 2014” in Schlumberger’s 2015 Proxy Statement is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information under the captions “Stock Ownership Information—Security Ownership by Certain Beneficial Owners,” “Stock Ownership Information—Security Ownership by Management” and “Equity Compensation Plan Information” in Schlumberger’s 2015 Proxy Statement is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information under the captions “Corporate Governance—Board Independence” and “Corporate Governance—Policies and Procedures for Approval of Related Person Transactions” in Schlumberger’s 2015 Proxy Statement is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services.

The information under the caption “Appointment of Independent Registered Public Accounting Firm” in Schlumberger’s 2015 Proxy Statement is incorporated herein by reference.

65

PART IV

Item 15.  Exhibits and Financial Statement Schedules.

(a) The following documents are filed as part of this Report:

		Page(s)
(1)	Financial Statements
	Consolidated Statement of Income for the three years ended December 31, 2014	31
	Consolidated Statement of Comprehensive Income for the three years ended December 31, 2014	32
	Consolidated Balance Sheet at December 31, 2014 and 2013	33
	Consolidated Statement of Cash Flows for the three years ended December 31, 2014	34
	Consolidated Statement of Stockholders’ Equity for the three years ended December 31, 2014	35 and 36
	Notes to Consolidated Financial Statements	37 to 60
	Report of Independent Registered Public Accounting Firm	64
	Quarterly Results (Unaudited)	65

Financial statements of companies accounted for under the equity method and unconsolidated subsidiaries have been omitted because they do not meet the materiality tests for assets or income.

(2)	Financial Statement Schedules not required
(3)	Exhibits: the exhibits listed in the accompanying “Index to Exhibits” are filed or incorporated by reference as part of this Form 10-K.

66

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date:	January 29, 2015		SCHLUMBERGER LIMITED
		By:	/S/ HOWARD GUILD
			Howard Guild
			Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this Report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

Name	Title
*	Director and Chief Executive Officer (Principal Executive Officer)
Paal Kibsgaard
/S/ SIMON AYAT	Executive Vice President and Chief Financial Officer (Principal Financial Officer)
Simon Ayat
/S/ HOWARD GUILD	Chief Accounting Officer (Principal Accounting Officer)
Howard Guild
*	Director
Peter L.S. Currie
*	Chairman
Tony Isaac
*	Director
K.V. Kamath
*	Director
Maureen Kempston Darkes
*	Director
Nikolay Kudryavtsev
*	Director
Michael E. Marks
*	Director
Lubna S. Olayan
*	Director
Leo Rafael Reif
*	Director
Tore Sandvold
*	Director
Henri Seydoux
/s/ ALEXANDER C. JUDEN	January 29, 2015
*By Alexander C. Juden Attorney-in-Fact

67

INDEX TO EXHIBITS

	Exhibit
Articles of Incorporation of Schlumberger Limited (Schlumberger N.V.), as last amended on April 6, 2011 (incorporated by reference to Exhibit 3 to Schlumberger’s Current Report on Form 8-K filed on April 7, 2011)	3.1
Amended and Restated By-Laws of Schlumberger Limited (Schlumberger N.V.), as last amended on July 19, 2012 (incorporated by reference to Exhibit 3.1 to Schlumberger’s Current Report on Form 8-K filed on July 20, 2012)	3.2
Indenture dated as of December 3, 2013, by and among Schlumberger Investment SA, as issuer, Schlumberger Limited, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.1 to Schlumberger’s Current Report on Form 8-K filed on December 3, 2013)	4.1
First Supplemental Indenture dated as of December 3, 2013, by and among Schlumberger Investment SA, as issuer, Schlumberger Limited, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee (including form of global notes representing 3.650% Senior Notes due 2023) (incorporated by reference to Exhibit 4.2 to Schlumberger’s Current Report on Form 8-K filed on December 3, 2013)	4.2
Schlumberger Limited Supplementary Benefit Plan, as conformed to include amendments through January 1, 2009 (incorporated by reference to Exhibit 10.2 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2008) (+)	10.1
Schlumberger Limited Restoration Savings Plan, as conformed to include amendments through January 1, 2009 (incorporated by reference to Exhibit 10.3 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2008) (+)	10.2
First Amendment to Schlumberger Limited Restoration Savings Plan (incorporated by reference to Exhibit 10.3 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013) (+)	10.3
Schlumberger 1998 Stock Option Plan, as conformed to include amendments through January 1, 2009 (incorporated by reference to Exhibit 10.4 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2008) (+)	10.4
Third Amendment to Schlumberger 1998 Stock Option Plan (incorporated by reference to Exhibit 10.4 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.5
Schlumberger 2001 Stock Option Plan, as conformed to include amendments through January 1, 2009 (incorporated by reference to Exhibit 10.5 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2008) (+)	10.6
Second Amendment to Schlumberger 2001 Stock Option Plan (incorporated by reference to Exhibit 10.5 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.7
Schlumberger Limited 2004 Stock and Deferral Plan for Non-Employee Directors, amended and restated effective January 19, 2012 (incorporated by reference to Exhibit 10 to Schlumberger’s Current Report on Form 8-K filed on April 11, 2012.) (+)	10.8
Schlumberger 2005 Stock Incentive Plan, as conformed to include amendments through January 1, 2009 (incorporated by reference to Exhibit 10.6 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2008) (+)	10.9
Third Amendment to Schlumberger 2005 Stock Incentive Plan (incorporated by reference to Exhibit 10.6 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.10
Schlumberger 2008 Stock Incentive Plan, as conformed to include amendments through January 1, 2009 (incorporated by reference to Exhibit 10.8 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2008) (+)	10.11
Second Amendment to Schlumberger 2008 Stock Incentive Plan (incorporated by reference to Exhibit 10.7 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.12

68

	Exhibit
Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.1 to Schlumberger’s Current Report on Form 8-K filed on April 9, 2010) (+)	10.13
First Amendment to Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.8 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.14
Form of 2013 Two Year Performance Share Unit Award Agreement under Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.5 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013) (+)	10.15
Form of 2013 Three Year Performance Share Unit Award Agreement under Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.6 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013) (+)	10.16
Form of 2014 Three Year Performance Share Unit Award Agreement under Schlumberger 2013 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.1 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014) (+)	10.17
French Sub-Plan of Schlumberger 2010 Omnibus Stock Incentive Plan for Employees in France (incorporated by reference to Exhibit 10.7 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013) (+)	10.18
Form of Option Agreement (Employees in France), Incentive Stock Option, under Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.10 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.19
Form of Option Agreement (Employees in France), Non-Qualified Stock Option, under Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.11 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.20
Form of Restricted Stock Unit Award Agreement (Employees in France) under Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.12 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.21
Form of 2013 One Year Performance Share Unit Award Agreement (Employees in France) under Schlumberger 2010 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.1 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013) (+)	10.22
Schlumberger 2013 Omnibus Stock Incentive Plan (incorporated by reference to Appendix A to Schlumberger’s Definitive Proxy Statement on Schedule 14A filed on March 1, 2013) (+)	10.23
First Amendment to Schlumberger 2013 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.9 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.24
Form of Option Agreement, Incentive Stock Option, under Schlumberger 2013 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.1 to the Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended in June 30, 2014) (+)	10.25
Form of Option Agreement, Non-Qualified Stock Option, under Schlumberger 2013 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.2 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014) (+)	10.26
Form of Restricted Stock Unit Award Agreement under Schlumberger 2013 Omnibus Stock Incentive Plan (incorporated by reference to Exhibit 10.3 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2014) (+)	10.27
Schlumberger Discounted Stock Purchase Plan, as amended and restated effective as of January 1, 2013 (incorporated by reference to Appendix B to Schlumberger’s Definitive Proxy Statement on Schedule 14A filed on March 1, 2013) (+)	10.28

69

	Exhibit
Form of Option Agreement, Capped Incentive Stock Option (incorporated by reference to Exhibit 10.1 to Schlumberger’s Current Report on Form 8-K filed on January 19, 2006) (+)	10.29
Form of Option Agreement, Capped Non-Qualified Stock Option (incorporated by reference to Exhibit 10.2 to Schlumberger’s Current Report on Form 8-K filed on January 19, 2006) (+)	10.30
Form of Option Agreement, Uncapped Incentive Stock Option (for 2001, 2005 and 2008 stock plans) (incorporated by reference to Exhibit 10.11 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2009) (+)	10.31
Form of Option Agreement, Uncapped Non-Qualified Stock Option (for 2001, 2005 and 2008 stock plans) (incorporated by reference to Exhibit 10.12 to Schlumberger’s Annual Report on Form 10-K for the year ended December 31, 2009) (+)	10.32
Form of Smith International, Inc. 2010 Restricted Stock Unit Agreement (incorporated by reference to Exhibit 10.3 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2010) (+)	10.33
Employment Agreement dated June 11, 2013 and effective as of July 1, 2013, between Schlumberger Limited and Satish Pai (incorporated by reference to Exhibit 10.1 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.34
Employment Agreement dated February 19, 2013 and effective as of March 1, 2013, between Schlumberger Limited and Kjell-Erik Oestdahl (incorporated by reference to Exhibit 10.2 to Schlumberger’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013) (+)	10.35
Form of Indemnification Agreement (incorporated by reference to Exhibit 10 to Schlumberger’s Current Report on Form 8-K filed on October 21, 2013)	10.36
Subsidiaries (*)	21
Consent of Independent Registered Public Accounting Firm (*)	23
Powers of Attorney (*)	24
Certification of Chief Executive Officer pursuant to Rule 13a-14(a) as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (*)	31.1
Certification of Chief Financial Officer pursuant to Rule 13a-14(a) as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (*)	31.2
Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (*)	32.1
Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (*)	32.2
Mine Safety Disclosure (*)	95
The following materials from Schlumberger Limited’s Annual Report on Form 10-K for the year ended December 31, 2014, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Statement of Income, (ii) Consolidated Statement of Comprehensive Income, (iii) Consolidated Balance Sheet, (iv) Consolidated Statement of Cash Flows, (v) Consolidated Statement of Equity and (vi) Notes to Consolidated Financial Statements. (*)	101
(*) Exhibits electronically filed with this Form 10-K. All other exhibits incorporated by reference.
(+) Management contracts or compensatory plans or arrangements.

70

EX-21

Exhibit 21

Significant Subsidiaries

Listed below are the significant subsidiaries of the Registrant as of December 31, 2014, and the states or jurisdictions in which they are incorporated or organized. The indentation reflects the principal parenting of each subsidiary. The names of other subsidiaries have been omitted from the list below, since they would not constitute, in the aggregate, a significant subsidiary as of December 31, 2014.

Schlumberger Antilles N.V., Curacao

Schlumberger B.V., Netherlands

Schlumberger Canada Limited, Canada

Schlumberger SA, France

Services Petroliers Schlumberger, France

Schlumberger Norge AS, Norway

Schlumberger Holdings Corporation, Delaware

Schlumberger Technology Corporation, Texas

Smith International Inc, Delaware

Schlumberger UK Limited, UK

M-I Holdings (UK) Limited, UK

Schlumberger Plc, UK

Schlumberger Oilfield UK Plc, UK

M-I Holdings BV, Netherlands

Schlumberger Oilfield Holdings Limited, BVI

Schlumberger Holdings Limited, BVI

Dowell Schlumberger Corporation, BVI

Schlumberger Logelco, Inc., Panama

Schlumberger Middle East SA., Panama

Schlumberger Offshore Services Limited, BVI

Schlumberger Overseas, SA, Panama

Schlumberger Seaco, Inc., Panama

Schlumberger Surenco, SA, Panama

WesternGeco Seismic Holdings Limited, BVI

EX-23

Exhibit 23

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-104225; 333-115277; 333-124534; 333-151920; 333-173055, as amended by post-effective amendment on Form S-8; 333-188589; and 333-188590); on Form S-3 (Nos. 333-195342 and 333-190822); and on Form S-4 (Nos. 333-97899 and 333-166326, as amended by post-effective amendment on Form S-8) of Schlumberger Limited of our report dated January 29, 2015 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Houston, Texas

January 29, 2015

EX-24

Exhibit 24

Powers of Attorney

Each of the undersigned, in the capacity or capacities set forth below his or her signature as a member of the Board of Directors and/or an officer of Schlumberger Limited, a Curaçao corporation, hereby appoints Simon Ayat, Howard Guild and Alexander C. Juden, or either of them, the attorney or attorneys of the undersigned, with full power of substitution and revocation, for and in the name, place and stead of the undersigned to execute and file with the Securities and Exchange Commission the Annual Report on Form 10-K under the Securities Exchange Act of 1934 (the “Exchange Act”) for the fiscal year ending December 31, 2014, and any amendment or amendments to any such Annual Report on Form 10-K, and any agreements, consents or waivers relative thereto, and to take any and all such other action for and in the name and place and stead of the undersigned as may be necessary or desirable in order to comply with the Exchange Act or the rules and regulations thereunder.

/s/   Peter L.S. Currie	/s/   Michael E. Marks
Peter L.S. Currie Director	Michael E. Marks Director
/s/   Tony Isaac	/s/   Lubna S. Olayan
Tony Isaac Chairman of the Board	Lubna S. Olayan Director
/s/   K. Vaman Kamath	/s/   Leo Rafael Reif
K.Vaman Kamath Director	Leo Rafael Reif Director
/s/   Maureen Kempston Darkes	/s/   Tore Sandvold
Maureen Kempston Darkes Director	Tore Sandvold Director
/s/   Paal Kibsgaard	/s/   Henri Seydoux
Paal Kibsgaard Director and Chief Executive Officer	Henri Seydoux Director
/s/   Nikolay Kudryavtsev
Nikolay Kudryavtsev Director

Date: January 29, 2015

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Paal Kibsgaard, certify that:

1. I have reviewed this Annual Report on Form 10-K of Schlumberger Limited;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: January 29, 2015	/s/ Paal Kibsgaard
	Paal Kibsgaard
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Simon Ayat, certify that:

1. I have reviewed this Annual Report on Form 10-K of Schlumberger Limited;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: January 29, 2015	/s/ Simon Ayat
	Simon Ayat
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Schlumberger N.V. (Schlumberger Limited) (the “Company”) for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Paal Kibsgaard, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: January 29, 2015	/s/ Paal Kibsgaard
	Paal Kibsgaard
	Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to Schlumberger Limited and will be retained by Schlumberger Limited and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for purposes of Section 18 of the Exchange Act.

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Schlumberger N.V. (Schlumberger Limited) (the “Company”) for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Simon Ayat, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: January 29, 2015	/s/ Simon Ayat
	Simon Ayat
	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Schlumberger Limited and will be retained by Schlumberger Limited and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for purposes of Section 18 of the Exchange Act.

EX-95

Exhibit 95

Mine Safety Disclosure

The following disclosure is provided pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, which requires certain disclosures by companies required to file periodic reports under the Securities Exchange Act of 1934, as amended, that operate mines regulated under the Federal Mine Safety and Health Act of 1977.  

The table that follows reflects citations, orders, violations and proposed assessments issued by the Mine Safety and Health Administration (the “MSHA”) to M-I LLC, an indirect wholly-owned subsidiary of Schlumberger.  The disclosure is with respect to the full year ended December 31, 2014.  Due to timing and other factors, the data may not agree with the mine data retrieval system maintained by the MSHA at www.MSHA.gov.

Full Year 2014

 (whole dollars)

Mine or Operating Name/MSHA Identification Number	Section 104 S&S Citations	Section 104(b) Orders	Section 104(d) Citations and Orders	Section 110(b)(2) Violations	Section 107(a) Orders	Proposed MSHA Assessments(1)	Mining Related Fatalities	Received Notice of Pattern of Violations Under Section 104(e) (yes/no)	Received Notice of Potential to Have Pattern Under Section 104(e) (yes/no)	Legal Actions Pending as of Last Day of Period	Legal Actions Initiated During Period	Legal Actions Resolved During Period
Amelia Barite Plant/1600825	1	0	0	0	0	$343	0	N	N	0	0	0
Battle Mountain Grinding Plant/2600828	0	0	0	0	0	$1,416	0	N	N	0	0	3
Galveston GBT Barite Grinding Plant/4104675	1	0	0	0	0	$108*	0	N	N	0	0	0
Greybull Milling Operation/4800602	0	0	0	0	0	$400	0	N	N	0	0	0
Greybull Mining Operation/4800603	1	0	0	0	0	$648	0	N	N	0	0	0
Greystone Mine/2600411	0	0	0	0	0	$1,455	0	N	N	0	0	0
MI SWACO-Alpine/4104829	0	0	0	0	0	$0	0	N	N	0	0	0
MI SWACO-Brownsville Grinding Plant/4103033	1	0	0	0	0	$884	0	N	N	0	0	0

(1)  Amounts included are the total dollar value of proposed assessments received from MSHA on or before December 31, 2014, regardless of whether the assessment has been challenged or appealed, for citations and orders occurring during the full year 2014.  Citations and orders can be contested and appealed, and as part of that process, are sometimes reduced in severity and amount, and sometimes dismissed.  The number of citations, orders, and proposed assessments vary by inspector and also vary depending on the size and type of the operation.

* As of December 31, 2014, MSHA had not yet proposed assessments for four Section 104(a) citations at Galveston GBT Barite Grinding Plant.

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Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Fair Values of Outstanding Derivative Instruments

The fair values of outstanding derivative instruments are summarized as follows:

	(Stated in millions)
	Fair Value of Derivatives				Consolidated Balance Sheet Classification
Derivative Assets	2014		2013
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	98	Other current assets
Foreign exchange contracts		32		24	Other Assets
Cross currency swap		—		27	Other Assets
		35		149
Derivatives not designated as hedges:
Foreign exchange contracts		5		10	Other current assets
Foreign exchange contracts		—		4	Other Assets
		5		14
	$	40	$	163
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	80	$	14	Accounts payable and accrued liabilities
Foreign exchange contracts		105		1	Other Liabilities
Cross currency swap		42		—	Other Liabilities
		227		15
Derivatives not designated as hedges:
Foreign exchange contracts		28		2	Accounts payable and accrued liabilities
	$	255	$	17

Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income

The effect of derivative instruments designated as fair value hedges and those not designated as hedges on the Consolidated Statement of Income was as follows:

	(Stated in millions)
	Gain (Loss) Recognized in Income								Consolidated Statement of
	2014			2013			2012		Income Classification
Derivatives designated as fair value hedges:
Cross currency swap	$	(82	)	$	15		$	1	Interest expense
Derivatives not designated as hedges:
Foreign exchange contracts	$	(95	)	$	(2	)	$	5	Cost of revenue
Commodity contracts		—			—			1	Cost of revenue
	$	(95	)	$	(2	)	$	6

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Fixed Assets - Additional Information (Detail) (USD $) In Billions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment [Line Items]
Depreciation expense relating to fixed assets	$ 3.2	$ 3.1	$ 2.9
Building and Building Improvements | Minimum
Property Plant And Equipment [Line Items]
Useful Life	25 years
Building and Building Improvements | Maximum
Property Plant And Equipment [Line Items]
Useful Life	30 years
Machinery and Equipment | Minimum
Property Plant And Equipment [Line Items]
Useful Life	5 years
Machinery and Equipment | Maximum
Property Plant And Equipment [Line Items]
Useful Life	10 years
Seismic Vessels | Minimum
Property Plant And Equipment [Line Items]
Useful Life	20 years
Seismic Vessels | Maximum
Property Plant And Equipment [Line Items]
Useful Life	30 years

XML

Summary of Accounting Policies - Reconciliation of Earnings Per Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Basic	$ 5,643	$ 6,801	$ 5,230
Diluted	$ 5,643	$ 6,801	$ 5,230
Basic	1,295	1,323	1,330
Assumed exercise of stock options	9	6	5
Unvested restricted stock	4	4	4
Diluted	1,308	1,333	1,339
Basic	$ 4.36	$ 5.14	$ 3.93
Diluted	$ 4.31	$ 5.10	$ 3.91

XML

Stock-based Compensation Plans - Summary of Stock Option Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning balance, shares	41,939	42,059	40,027
Granted, shares	6,105	6,570	8,664
Exercised, shares	(8,269)	(5,168)	(4,171)
Forfeited, shares	(1,192)	(1,522)	(2,461)
Ending balance, shares	38,583	41,939	42,059
Beginning balance, Weighted-average exercise price	$ 70.33	$ 67.77	$ 63.84
Granted, Weighted-average exercise price	$ 99.04	$ 72.16	$ 72.04
Exercised, Weighted-average exercise price	$ 64.19	$ 51.73	$ 39.07
Forfeited, Weighted-average exercise price	$ 73.56	$ 70.57	$ 67.50
Ending balance, Weighted-average exercise price	$ 76.10	$ 70.33	$ 67.77

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Multiclient Seismic Data - Multiclient Seismic Data Table (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Goodwill Abstract
Opening balance	$ 667	$ 518
Capitalized in year	321	394
Charged to expense	(195)	(245)
Ending balance	$ 793	$ 667

XML

Income Taxes - Reconciliation of US Statutory Federal Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]
US statutory federal rate	35.00%	35.00%	35.00%
Non-US income taxed at different rates	(11.00%)	(12.00%)	(10.00%)
Other	(2.00%)		(1.00%)
Effective income tax rate	25.00%	21.00%	24.00%
Charges And Credits
Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items]
Charges and credits (See Note 3)	3.00%	(2.00%)

XML

Supplementary Information - Accounts Payable and Accrued Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting [Abstract]
Payroll, vacation and employee benefits	$ 1,899	$ 1,910
Trade	4,344	4,155
Other	3,003	2,772
Accounts payable and accrued liabilities	$ 9,246	$ 8,837

XML

Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2014

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

The following table summarizes the results of these discontinued operations:

	(Stated in millions)
	2014			2013			2012
Revenue	$	—		$	102		$	1,399
(Loss) income before taxes	$	(205	)	$	(63	)	$	274
Tax expense		—			(6	)		(37	)
Net income attributable to noncontrolling interests		—			—			(5	)
Gain on divestitures, net of tax		—			—			28
Income (loss) from discontinued operations	$	(205	)	$	(69	)	$	260

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Inventories (Tables)

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Inventory Disclosure

A summary of inventories follows:

	(Stated in millions)
	2014		2013
Raw materials & field materials	$	2,666	$	2,539
Work in process		273		261
Finished goods		1,689		1,803
	$	4,628	$	4,603

XML

Income Taxes - Reconciliation of Liabilities Associated with Uncertain Tax Provisions (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 1,452	$ 1,453	$ 1,353
Additions based on tax positions related to the current year	154	146	156
Additions for tax positions of prior years	96	109	98
Additions related to acquisitions	43
Impact of changes in exchange rates	(62)	(47)	12
Settlements with tax authorities	(27)	(64)	(17)
Reductions for tax positions of prior years	(212)	(109)	(103)
Reductions due to the lapse of the applicable statute of limitations	(42)	(36)	(46)
Balance at end of year	$ 1,402	$ 1,452	$ 1,453

XML

Stock-based Compensation Plans - Stock-Based Compensation Expense Recognized in Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 329	$ 315	$ 335
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	177	165	203
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	114	110	82
DSPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 38	$ 40	$ 50

XML

Pension and Other Benefit Plans - Weighted-Average Assumed Discount Rate, Compensation Increases and Expected Long-Term Rate of Return on Plan Assets Used to Determine Net Pension Cost for US and International Plans (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.15%	4.85%
US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.85%	4.25%	5.50%
Compensation increases	4.00%	4.00%	4.00%
Return on plan assets	7.25%	7.50%	7.50%
International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.76%	4.38%	4.95%
Compensation increases	4.80%	4.83%	4.91%
Return on plan assets	7.50%	7.50%	7.50%

XML

Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 6,299	$ 6,305
Accumulated Amortization	1,645	1,596
Net Book Value	4,654	4,709
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,747	1,960
Accumulated Amortization	535	597
Net Book Value	1,212	1,363
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,641	1,647
Accumulated Amortization	319	257
Net Book Value	1,322	1,390
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,531	2,263
Accumulated Amortization	523	407
Net Book Value	2,008	1,856
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	380	435
Accumulated Amortization	268	335
Net Book Value	$ 112	$ 100

XML

Income Taxes - Components of Net Deferred Tax Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Postretirement benefits	$ 327	$ 236
Intangible assets	(1,435)	(1,502)
Investments in non-US subsidiaries	(227)	(282)
Other, net	183	128
Net deferred tax assets	$ (1,152)	$ (1,420)

XML

Segment Information - Revenue by Geographic Area (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 48,580	$ 45,266	$ 41,731
Operating Segments
Segment Reporting Information [Line Items]
Revenue	48,580	45,266	41,731
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenue	16,151	13,897	13,535
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Revenue	7,699	7,754	7,554
Operating Segments | Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	12,515	12,411	11,510
Operating Segments | Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	11,875	10,767	8,717
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 340	$ 437	$ 415

XML

Leases and Lease Commitments - Additional Information (Detail) (USD $) In Billions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Total rental expense	$ 2.1	$ 1.9	$ 1.9

XML

Segment Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 48,580	$ 45,266	$ 41,731
United States
Segment Reporting Information [Line Items]
Revenue	$ 14,000	$ 12,000	$ 11,800
Sales Revenue, Segment
Segment Reporting Information [Line Items]
Maximum percentage of consolidated revenue customers	10.00%	10.00%	10.00%

XML

Income Taxes - Components of Consolidated Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
United States - Federal	$ 718	$ 682	$ 698
United States - State	51	60	53
Outside United States	1,380	1,211	1,025
Current Income Tax Expense (Benefit), Total	2,149	1,953	1,776
Deferred:
United States - Federal	(194)	(109)	(105)
United States - State	(9)	(4)	(7)
Outside United States	(12)	34	22
Valuation allowance	(6)	(26)	14
Deferred income taxes	(221)	(105)	(76)
Consolidated taxes on income	$ 1,928	$ 1,848	$ 1,700

XML

Stock-based Compensation Plans - Restricted Stock Transactions (Detail) (Restricted Stock, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested at beginning of year, Restricted Stock	4,171,000	3,566,000	2,433,000
Performance shares to be granted	1,341,000	1,949,000	1,668,000
Vested, Restricted Stock	(1,186,000)	(958,000)	(351,000)
Forfeited, Restricted Stock	(188,000)	(386,000)	(184,000)
Unvested at end of year, Restricted Stock	4,138,000	4,171,000	3,566,000
Unvested at beginning of year, Weighted Average Grant Date Fair Value	$ 76.01	$ 73.62	$ 72.25
Granted, Weighted Average Grant Date Fair Value	$ 96.08	$ 75.65	$ 71.09
Vested, Weighted Average Grant Date Fair Value	$ 81.59	$ 66.98	$ 52.26
Forfeited, Weighted Average Grant Date Fair Value	$ 78.68	$ 74.53	$ 73.38
Unvested at end of year, Weighted Average Grant Date Fair Value	$ 80.80	$ 76.01	$ 73.62

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Segment Information

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segment Information

17. Segment Information

Schlumberger’s segments are as follows:

● Reservoir Characterization Group – Consists of the principal technologies involved in finding and defining hydrocarbon resources. These include WesternGeco, Wireline, Testing Services, Schlumberger Information Services and PetroTechnical Services.

● Drilling Group – Consists of the principal technologies involved in the drilling and positioning of oil and gas wells.  These include Bits & Advanced Technologies, M-I SWACO, Geoservices, Drilling & Measurements, Drilling Tools & Remedial Services, Saxon Rig Services and Integrated Project Management well construction projects.

● Production Group – Consists of the principal technologies involved in the lifetime production of oil and gas reservoirs. These include Well Services, Completions, Artificial Lift, Well Intervention, Water Services, and the Schlumberger Production Management field production projects.

Financial information for the years ended December 31, 2014, 2013 and 2012, by segment, is as follows:

	(Stated in millions)
	2014
	Revenue			Income before taxes			Assets		Depreciation  and Amortization		Capital Expenditures
Reservoir Characterization	$	12,224		$	3,607		$	8,596	$	1,391	$	1,152
Drilling		18,462			3,872			11,378		1,174		1,328
Production		18,111			3,227			11,848		1,133		1,246
Eliminations & other		(217	)		(130	)		1,577		198		250
Pretax operating income					10,576
Goodwill and intangible assets								20,142
All other assets								2,185
Corporate (1)					(848	)		11,178		198
Interest income (2)					31
Interest expense (3)					(347	)
Charges & credits (4)					(1,773	)
	$	48,580		$	7,639		$	66,904	$	4,094	$	3,976

	(Stated in millions)
	2013
	Revenue			Income before taxes			Assets		Depreciation  and Amortization		Capital Expenditures
Reservoir Characterization	$	12,463		$	3,660		$	8,918	$	1,338	$	1,275
Drilling		17,099			3,293			10,940		1,077		1,291
Production		15,927			2,619			11,185		1,039		1,204
Eliminations & other		(223	)		(228	)		1,974		217		173
Pretax operating income					9,344
Goodwill and intangible assets								19,415
All other assets								2,618
Corporate (1)					(726	)		12,050		208
Interest income (2)					22
Interest expense (3)					(369	)
Charges & credits (4)					420
	$	45,266		$	8,691		$	67,100	$	3,879	$	3,943

	(Stated in millions)
	2012
	Revenue			Income before taxes			Assets		Depreciation and Amortization		Capital Expenditures
Reservoir Characterization	$	11,360		$	3,080		$	8,501	$	1,309	$	1,235
Drilling		15,691			2,778			11,316		1,072		1,668
Production		14,802			2,327			9,889		877		1,439
Eliminations & other		(122	)		(68	)		1,920		191		352
Pretax operating income					8,117
Goodwill and intangible assets								19,387
Discontinued operations assets								246
All other assets								2,267
Corporate (1)					(696	)		8,021		198
Interest income (2)					30
Interest expense (3)					(331	)
Charges & credits (4)					(161	)
	$	41,731		$	6,959		$	61,547	$	3,647	$	4,694

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.

⁽²⁾ Interest income excludes amounts which are included in the segments’ income (2014: $20 million; 2013: $11 million; 2012: $- million).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income (2014: $22 million; 2013: $22 million; 2012: $9 million).

⁽⁴⁾ See Note 3 – Charges and Credits.

Segment assets consist of receivables, inventories, fixed assets, multiclient seismic data and SPM investments.

Depreciation and amortization includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

Revenue by geographic area for the years ended December 31, 2014, 2013 and 2012 is as follows:

	(Stated in millions)
	2014		2013		2012
North America	$	16,151	$	13,897	$	13,535
Latin America		7,699		7,754		7,554
Europe/CIS/Africa		12,515		12,411		11,510
Middle East & Asia		11,875		10,767		8,717
Eliminations & other		340		437		415
	$	48,580	$	45,266	$	41,731

Revenue is based on the location where services are provided.

During each of the three years ended December 31, 2014, 2013 and 2012, no single customer exceeded 10% of consolidated revenue.

Schlumberger did not have revenue from third-party customers in its country of domicile during the last three years. Revenue in the United States in 2014, 2013 and 2012 was $14.0 billion, $12.0 billion and $11.8 billion, respectively.

Fixed Assets less accumulated depreciation by geographic area are as follows:

	(Stated in millions)
	2014		2013		2012
North America	$	4,885	$	4,858	$	4,868
Latin America		1,969		1,889		1,788
Europe/CIS/Africa		3,640		3,452		3,414
Middle East & Asia		3,446		2,991		2,908
Unallocated (1)		1,456		1,906		1,802
	$	15,396	$	15,096	$	14,780

⁽¹⁾ Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

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Charges and Credits - Summary of Charges (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investment In Joint Venture [Line Items]
Charges, Pretax	$ 1,773		$ 161
Charges, Tax	134		22
Charges, Net	1,639		139
Charges and credits, Pretax	1,773	(420)	161
Charges and credits, Tax		49
Charges and credits, Net		(469)
WesternGeco restructuring | Impairment And Other
Investment In Joint Venture [Line Items]
Charges, Pretax	806
Charges, Tax	25
Charges, Net	781
Currency devaluation loss in Venezuela | Impairment And Other
Investment In Joint Venture [Line Items]
Charges, Pretax	472
Charges, Net	472
Charges and credits, Pretax		92
Charges and credits, Net		92
Severance and other | Impairment And Other
Investment In Joint Venture [Line Items]
Charges, Pretax	296		33
Charges, Tax	37		6
Charges, Net	259		27
Impairment of SPM project | Impairment And Other
Investment In Joint Venture [Line Items]
Charges, Pretax	199
Charges, Tax	72
Charges, Net	127
Gain On Formation Of One Subsea Joint Venture | Gain On Formation Of One Subsea
Investment In Joint Venture [Line Items]
Charges and credits, Pretax		(1,028)
Charges and credits, Net		(1,028)
Impairment Of Equity Method Investments | Impairment And Other
Investment In Joint Venture [Line Items]
Charges and credits, Pretax		364
Charges and credits, Tax		19
Charges and credits, Net		345
Cost Of Revenue | Provision For Accounts Receivable
Investment In Joint Venture [Line Items]
Charges and credits, Pretax		152
Charges and credits, Tax		30
Charges and credits, Net		122
Merger-related integration costs | Merger And Integration
Investment In Joint Venture [Line Items]
Charges, Pretax			128
Charges, Tax			16
Charges, Net			$ 112

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Tax Disclosure Table

Income from continuing operations before taxes which were subject to United States and non-United States income taxes for each of the three years ended December 31, were as follows:

	(Stated in millions)
	2014		2013		2012
United States	$	1,990	$	1,904	$	1,980
Outside United States		5,649		6,787		4,979
	$	7,639	$	8,691	$	6,959

Components of Net Deferred Tax Assets

The components of net deferred tax assets (liabilities) were as follows:

	(Stated in millions)
	2014			2013
Postretirement benefits	$	327		$	236
Intangible assets		(1,435	)		(1,502	)
Investments in non-US subsidiaries		(227	)		(282	)
Other, net		183			128
	$	(1,152	)	$	(1,420	)

Components of Consolidated Income Taxes

The components of Taxes on income were as follows:

	(Stated in millions)
	2014			2013			2012
Current:
United States - Federal	$	718		$	682		$	698
United States - State		51			60			53
Outside United States		1,380			1,211			1,025
	$	2,149		$	1,953		$	1,776
Deferred:
United States - Federal	$	(194	)	$	(109	)	$	(105	)
United States - State		(9	)		(4	)		(7	)
Outside United States		(12	)		34			22
Valuation allowance		(6	)		(26	)		14
	$	(221	)	$	(105	)	$	(76	)
	$	1,928		$	1,848		$	1,700

Reconciliation of US Statutory Federal Tax Rate

A reconciliation of the United States statutory federal tax rate (35%) to the consolidated effective tax rate is:

	2014			2013			2012
US statutory federal rate		35	%		35	%		35	%
Non-US income taxed at different rates		(11	)		(12	)		(10	)
Charges and credits (See Note 3)		3			(2	)		—
Other		(2	)		—			(1	)
		25	%		21	%		24	%

Reconciliation of Liabilities Associated with Uncertain Tax Provisions

A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2014, 2013 and 2012 is as follows:

	(Stated in millions)
	2014			2013			2012
Balance at beginning of year	$	1,452		$	1,453		$	1,353
Additions based on tax positions related to the current year		154			146			156
Additions for tax positions of prior years		96			109			98
Additions related to acquisitions		43			—			—
Impact of changes in exchange rates		(62	)		(47	)		12
Settlements with tax authorities		(27	)		(64	)		(17	)
Reductions for tax positions of prior years		(212	)		(109	)		(103	)
Reductions due to the lapse of the applicable statute of limitations		(42	)		(36	)		(46	)
Balance at end of year	$	1,402		$	1,452		$	1,453

Tax Years Subject to Examination by Tax Authorities

The following table summarizes the tax years that are either currently under audit or remain open and subject to examination by the tax authorities in the most significant jurisdictions in which Schlumberger operates:

Brazil	2009 - 2014
Canada	2007 - 2014
Ecuador	2001 - 2014
Mexico	2007 - 2014
Norway	2013 - 2014
Russia	2011 - 2014
Saudi Arabia	2001 - 2014
United Kingdom	2009 - 2014
United States	2011 - 2014

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Income Taxes - Income Tax Disclosure Table (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income (loss) from continuing operations before income taxes and minority interest, Total	$ 1,990	$ 1,904	$ 1,980
Income (loss) from continuing operations before income taxes and minority interest, Total	5,649	6,787	4,979
Income (loss) from continuing operations before income taxes and minority interest, Total	$ 7,639	$ 8,691	$ 6,959

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Pension and Other Benefit Plans - Changes in Accumulated Postretirement Benefit Obligation, Plan Assets and Funded Status (Detail) (Postretirement medical plan, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Postretirement medical plan
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	$ 1,247	$ 1,410
Service cost	43	48
Interest cost	60	56
Contributions by plan participants	6	6
Actuarial losses (gains)	210	(232)
Benefits paid	(46)	(41)
Plan amendments	(299)
Projected benefit obligation at end of year	1,221	1,247
Change in Plan Assets
Plan assets at fair value at beginning of year	731	576
Company contributions	65	83
Contributions by plan participants	6	6
Benefits paid	(46)	(41)
Actual return on plan assets	98	107
Plan assets at fair value at end of year	854	731
(Unfunded Liability) / Asset	(367)	(516)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial (gains) losses	242	87
Prior service cost	(307)	(12)
Total amount recognized in accumulated other comprehensive income	$ (65)	$ 75

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Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets by Major Class

A summary of intangible assets follows:

	(Stated in millions)
	2014						2013
	Gross Book Value		Accumulated Amortization		Net Book Value		Gross Book Value		Accumulated Amortization		Net Book Value
Technology/Technical Know-How	$	1,747	$	535	$	1,212	$	1,960	$	597	$	1,363
Tradenames		1,641		319		1,322		1,647		257		1,390
Customer Relationships		2,531		523		2,008		2,263		407		1,856
Other		380		268		112		435		335		100
	$	6,299	$	1,645	$	4,654	$	6,305	$	1,596	$	4,709

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Inventories - Inventory Disclosure (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Raw materials & field materials	$ 2,666	$ 2,539
Work in process	273	261
Finished goods	1,689	1,803
Inventories	$ 4,628	$ 4,603

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Stock-based Compensation Plans - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate intrinsic value of stock options outstanding	459
Aggregate intrinsic value of stock options exercisable	306
Total intrinsic value of options exercised	314	176	142
Total unrecognized compensation cost related to nonvested stock-based compensation arrangements	514
Expected to be recognized in 2015	238
Expected to be recognized in 2016	152
Expected to be recognized in 2017	73
Expected to be recognized in 2018	43
Expected to be recognized in 2019	8
Future Grants Shares	33,000,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option maximum term	10 years
Stock options vesting period	Four or Five Years
Weighted average remaining contractual life of stock options exercisable, in years	4 years 2 months 12 days
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance period to determine shares earned	3 years
Performance shares outstanding	600,000
Performance Shares | Scenario Return On Capital Employed Exceeds Predefined Target | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares to be granted as a percentage of total target award	250.00%
Performance Shares | Scenario Return On Capital Employed Falls Below Threshold
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares to be granted	0
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance shares to be granted	1,341,000	1,949,000	1,668,000
Performance shares outstanding	4,138,000	4,171,000	3,566,000	2,433,000
Restricted stock awards, vesting period		3 years
DSPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage purchase price of stock lower of stock price at beginning or end of plan period at specified intervals	92.50%

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Long-term Debt and Debt Facility Agreements - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Investment in subsidiary-Schlumberger Investment SA	100.00%
Committed debt facility agreement aggregated	$ 3,900,000,000
Unused debt facility	2,300,000,000
Long-term debt - current portion	1,244,000,000	1,819,000,000
Weighted average interest rate on variable rate debt	1.30%
Long-term Debt maturity in 2016	1,600,000,000
Long-term Debt maturity in 2017	1,000,000,000
Long-term Debt maturity in 2018	1,900,000,000
Long-term Debt maturity in 2019	900,000,000
Long-term Debt maturity in 2021	2,700,000,000
Long-term Debt maturity in 2022	1,000,000,000
Long-term Debt maturity in 2023	1,500,000,000
Long-term debt, fair value	10,700,000,000	10,400,000,000
Commercial Paper
Debt Instrument [Line Items]
Committed debt facility agreement aggregated	3,500,000,000
Long-term debt - current portion		95,000,000
Long-term debt	1,500,000,000
Commercial paper programs mature in July 2016
Debt Instrument [Line Items]
Committed debt facility agreement aggregated	250,000,000
Commercial paper programs mature in July 2018
Debt Instrument [Line Items]
Committed debt facility agreement aggregated	1,750,000,000
Commercial paper programs mature in November 2018
Debt Instrument [Line Items]
Committed debt facility agreement aggregated	$ 1,500,000,000

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Summary of Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Organization And Summary Of Significant Accounting Policies [Line Items]
Transaction Losses of Hedging Activities	$ (67)	$ (24)	$ (37)
Trading Investments		194
Fixed Income Investments, held to maturity	442	363
Fixed Income Investments, held to maturity, 2016	49
Fixed Income Investments, held to maturity, 2017	91
Fixed Income Investments, held to maturity, 2018	298
Fixed Income Investments, held to maturity, 2019	3
Fixed Income Investments, held to maturity, 2020	1
Carrying value of marketable securities	81	81
Fair value of marketable securities	91	257
Employee stock options to purchase	5	12	21
Customer Relationships
Organization And Summary Of Significant Accounting Policies [Line Items]
Useful life of intangible asset minimum	15 years
Useful life of intangible asset maximum	28 years
Technology/Technical Know-How
Organization And Summary Of Significant Accounting Policies [Line Items]
Useful life of intangible asset minimum	10 years
Useful life of intangible asset maximum	18 years
Tradenames
Organization And Summary Of Significant Accounting Policies [Line Items]
Useful life of intangible asset minimum	15 years
Useful life of intangible asset maximum	30 years
Schlumberger Production Management
Organization And Summary Of Significant Accounting Policies [Line Items]
Unamortized investments	$ 1,411	$ 1,154

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Business Description

12 Months Ended

Dec. 31, 2014

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Business Description

1. Business Description

Schlumberger Limited (Schlumberger N.V., incorporated in Curaçao) and its consolidated subsidiaries (collectively, “Schlumberger”) comprise the world’s leading supplier of technology, integrated project management and information solutions to the international oil and gas exploration and production industry.

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Derivative Instruments and Hedging Activities - Additional Information (Detail)	12 Months Ended				12 Months Ended
	Dec. 31, 2014 USD ($) Country	Dec. 31, 2013 1.50% Guaranteed Notes due 2019 EUR (€)	Dec. 31, 2013 Cross currency swap EUR (€)	Dec. 31, 2013 Fixed Rate Debt 1.50% Guaranteed Notes due 2019	Dec. 31, 2014 Floating Rate Debt 1.50% Guaranteed Notes due 2019	Dec. 31, 2014 Foreign exchange contracts USD ($)	Dec. 31, 2014 Foreign exchange contracts Debt Derivatives designated as hedges USD ($)	Dec. 31, 2014 London Interbank Offered Rate (LIBOR) Floating Rate Debt 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Notional amount of interest rate swap			€ 500,000,000			$ 6,800,000,000	$ 2,500,000,000
Guaranteed notes face amount		500,000,000
Derivative swap interest rate				1.50%
Floating interest rate on securities					three-month LIBOR plus approximately 64 basis points
Basis point								0.64%
Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps	9,000,000,000
Variable rate debt aggregate, after taking into account the effects of the interest rate swaps	4,300,000,000
Short-term investments and fixed income investments, held to maturity	4,800,000,000
Number of countries in which Schlumberger conducts business	85
Percentage of revenue denominated in domestic currency	81.00%
Recognized a cumulative net (loss) in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges	$ (96,000,000)

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Leases and Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Future Minimum Rental Commitments Under Noncancelable Operating Leases

Future minimum rental commitments under noncancelable operating leases for each of the next five years are as follows:

(Stated in millions)
2015	$	330
2016		259
2017		197
2018		156
2019		134
Thereafter		554
	$	1,630

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Summary of Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Principles of Consolidation

Principles of Consolidation

The accompanying Consolidated Financial Statements include the accounts of Schlumberger, its wholly-owned subsidiaries, and other subsidiaries over which it exercises a controlling financial interest. All significant intercompany transactions and balances have been eliminated.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; recoverability of fixed assets, goodwill, intangible assets, Schlumberger Production Management investments and investments in affiliates; income taxes; multiclient seismic data; contingencies and actuarial assumptions for employee benefit plans. Schlumberger bases its estimates on historical experience and other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Revenue Recognition

Revenue Recognition

Schlumberger recognizes revenue based upon purchase orders, contracts or other persuasive evidence of an arrangement with the customer that include fixed or determinable prices provided that collectibility is reasonably assured. Revenue is recognized for services when they are rendered. Revenue is recognized for products upon delivery and when the customer assumes the risks and rewards of ownership.

Revenue from seismic contract services performed on a dayrate basis is recognized as the service is performed. Revenue from other services, including pre-funded multiclient surveys, is recognized as the seismic data is acquired and/or processed on a proportionate basis as work is performed. This method requires revenue to be recognized based upon quantifiable measures of progress, such as square kilometers acquired. Multiclient data surveys are licensed or sold to customers on a non-transferable basis. Revenue from sales of completed multiclient data surveys is recognized upon obtaining a signed licensing agreement and providing customers with access to such data.

Revenue is occasionally generated from contractual arrangements that include multiple deliverables. Revenue from these arrangements is recognized as each item is delivered based on their relative fair value, provided that the delivered items have stand-alone value to the customer.

Revenue derived from the sale of licenses of Schlumberger software may include installation, maintenance, consulting and training services. If services are not essential to the functionality of the software, the revenue for each element of the contract is recognized separately based on its respective vendor specific objective evidence of fair value when all of the following conditions are met: a signed contract is obtained, delivery has occurred, the fee is fixed or determinable and collectibility is probable.

Translation of Non-United States Currencies

Translation of Non-United States Currencies

The functional currency of Schlumberger is primarily the US dollar. Assets and liabilities recorded in functional currencies other than US dollars are translated at period-end exchange rates. The resulting adjustments are charged or credited directly to the Equity section of the Consolidated Balance Sheet. Revenue and expenses are translated at the weighted-average exchange rates for the period. Realized and unrealized transaction gains and losses are included in income in the period in which they occur. Transaction losses of $67 million, $24 million and $37 million, net of hedging activities, were recognized in 2014, 2013 and 2012, respectively.

Short-term and Fixed Income Investments

Short-term and Fixed Income Investments

The Consolidated Balance Sheet reflects the Schlumberger investment portfolio separated between current and long term, based on maturity. Both Short-term investments and Fixed Income Investments, held to maturity are comprised primarily of money market funds, time deposits, certificates of deposit, commercial paper, bonds and notes, substantially all of which are denominated in US dollars. Under normal circumstances Schlumberger intends to hold such investments until maturity, with the exception of $194 million of investments at December 31, 2013 that are considered trading. Short-term investments designated as trading are stated at fair value, which is estimated using quoted market prices for those or similar investments. All other investments are stated at cost plus accrued interest, which approximates market. The unrealized gains/losses on investments designated as trading were not significant at December 31, 2013.

For purposes of the Consolidated Statement of Cash Flows, Schlumberger does not consider Short-term investments to be cash equivalents.

Fixed Income Investments, held to maturity at December 31, 2014 of $442 million mature as follows: $49 million in 2016, $91 million in 2017, $298 million in 2018, $3 million in 2019 and $1 million in 2020.

Inventories

Inventories

Inventories are stated at average cost or at market, whichever is lower. Costs included in Inventories consist of materials, direct labor and manufacturing overhead.

Investments in Affiliated Companies

Investments in Affiliated Companies

Investments in companies in which Schlumberger does not have a controlling financial interest, but over which it has significant influence are accounted for using the equity method. Schlumberger’s share of the after-tax earnings of equity method investees is included in Interest and other income. Investments in privately held companies in which Schlumberger does not have the ability to exercise significant influence are accounted for using the cost method. Investments in publicly traded companies in which Schlumberger does not have significant influence are accounted for as available-for-sale marketable securities. These marketable securities are reported at fair value, based on quoted market prices, with unrealized gains and losses reported as a component of Accumulated other comprehensive loss. The fair value of these marketable securities was $91 million and $257 million at December 31, 2014 and 2013, respectively. The cost basis of these marketable securities was $81 million at both December 31, 2014 and 2013.

Equity and cost method investments as well as investments in publicly traded companies are classified as Investments in Affiliated Companies in the Consolidated Balance Sheet.

Fixed Assets and Depreciation

Fixed Assets and Depreciation

Fixed assets are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Fixed assets include the manufacturing cost of oilfield technical equipment manufactured or assembled by subsidiaries of Schlumberger. Expenditures for replacements and improvements are capitalized. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the balance sheet and the net amount, less proceeds from disposal, is charged or credited to income.

Multiclient Seismic Data

Multiclient Seismic Data

The multiclient library consists of completed and in-process seismic surveys that are licensed on a nonexclusive basis. Schlumberger capitalizes costs directly incurred in acquiring and processing the multiclient seismic data. Such costs are charged to Cost of revenue based on the percentage of the total costs to the estimated total revenue that Schlumberger expects to receive from the sales of such data. However, under no circumstance will an individual survey carry a net book value greater than a 4-year, straight-line amortized value.

The carrying value of the multiclient library is reviewed for impairment annually as well as when an event or change in circumstance indicating impairment may have occurred. Adjustments to the carrying value are recorded when it is determined that estimated future cash flows, which involves significant judgment on the part of Schlumberger, would not be sufficient to recover the carrying value of the surveys. Significant adverse changes in Schlumberger’s estimated future cash flows could result in impairment charges in a future period.

Schlumberger Production Management

Schlumberger Production Management

Schlumberger Production Management (SPM) projects are focused on developing and co-managing the production of Schlumberger customers’ assets under long-term agreements.  Schlumberger will invest its own services, products and in some cases cash, into the field development activities and operations.  Although in certain arrangements Schlumberger is paid for a portion of the services or products it provides, generally Schlumberger will not be paid at the time of providing its services or upon delivery of its products. Instead, Schlumberger is compensated based upon cash flow generated or on a fee-per-barrel basis for any incremental production Schlumberger helps deliver above a mutually agreed baseline.

Schlumberger capitalizes its cash investments in a project as well as the direct costs associated with providing services or products for which Schlumberger will be compensated if incremental production is achieved.  Revenue is recognized as the incremental production is achieved. These capitalized investments are amortized to the Consolidated Statement of Income as incremental oil production is achieved based on the units of production method, whereby each incremental unit produced is assigned a pro-rata portion of the unamortized costs based on estimated total incremental production, resulting in a matching of revenue with the applicable costs.

The unamortized portion of Schlumberger’s investments in SPM projects was approximately $1.411 billion and $1.154 billion at December 31, 2014 and 2013, respectively.  These amounts are included within Other Assets in Schlumberger’s Consolidated Balance Sheet.  In 2014, Schlumberger revised its Consolidated Statement of Cash Flows to present certain cash outflows relating to SPM activities as a separate line item within investing activities, referred to as SPM investments. Schlumberger historically presented such cash outflows as an operating activity. This change was not material to prior periods.

Goodwill, Intangible Assets and Long-lived Assets

Goodwill, Intangible Assets and Long-lived Assets

Schlumberger records the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired and liabilities assumed as goodwill. The goodwill relating to each of Schlumberger’s reporting units is tested for impairment annually as well as when an event, or change in circumstances, indicates an impairment may have occurred.

Under generally accepted accounting principles, Schlumberger has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of its reporting units is greater than its carrying amount. If, after assessing the totality of events or circumstances, Schlumberger determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then there is no need to perform any further testing. However, if Schlumberger concludes otherwise, then it is required to perform the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value.

Schlumberger has the option to bypass the qualitative assessment for any reporting unit in any period and proceed directly to performing the first step of the two-step goodwill impairment test.

For purposes of performing the impairment test for goodwill, Schlumberger’s reporting units are its three Groups: Reservoir Characterization, Drilling and Production. Schlumberger elected to perform the qualitative assessment described above for purposes of its annual goodwill impairment test in 2014. Based on this assessment, Schlumberger concluded that it was more likely than not that the fair value of each of its reporting units was greater than its carrying amount. Accordingly, no further testing was required.

Long-lived assets, including fixed assets, intangible assets and investments in SPM projects, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In reviewing for impairment, the carrying value of such assets is compared to the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. If such cash flows are not sufficient to support the asset’s recorded value, an impairment charge is recognized to reduce the carrying value of the long-lived asset to its estimated fair value. The determination of future cash flows as well as the estimated fair value of long-lived assets involve significant estimates on the part of management. If there is a material change in economic conditions or other circumstances influencing the estimate of future cash flows or fair value, Schlumberger could be required to recognize impairment charges in the future.

Intangible assets consist primarily of customer relationships, technology/technical know-how and tradenames acquired in business combinations. Customer relationships are generally amortized over periods ranging from 15 to 28 years, acquired technology/technical know-how are generally amortized over periods ranging from 10 to 18 years, and tradenames are generally amortized over periods ranging from 15 to 30 years.

Taxes on Income

Taxes on Income

Schlumberger computes taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities vary substantially. Taxable income may differ from pretax income for financial accounting purposes. To the extent that differences are due to revenue or expense items reported in one period for tax purposes and in another period for financial accounting purposes, an appropriate provision for deferred income taxes is made. Any effect of changes in income tax rates or tax laws are included in the provision for income taxes in the period of enactment. When it is more likely than not that a portion or all of the deferred tax asset will not be realized in the future, Schlumberger provides a corresponding valuation allowance against deferred tax assets.

Schlumberger’s tax filings are subject to regular audit by the tax authorities in most of the jurisdictions in which it conducts business. These audits may result in assessments for additional taxes which are resolved with the authorities or, potentially, through the courts. Schlumberger recognizes the impact of a tax position in its financial statements if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits. Estimates of these tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of tax regulations, the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. In such an event, Schlumberger will record additional tax expense or tax benefit in the year in which such resolution occurs.

Schlumberger generally does not provide income taxes relating to undistributed earnings, as the earnings either would not be taxable when remitted or are considered to be indefinitely reinvested.

Concentration of Credit Risk

Concentration of Credit Risk

Schlumberger’s assets that are exposed to concentrations of credit risk consist primarily of cash, short-term investments, fixed income investments held to maturity, receivables from clients and derivative financial instruments. Schlumberger places its cash, short-term investments and fixed income investments held to maturity with financial institutions and corporations, and limits the amount of credit exposure with any one of them. Schlumberger regularly evaluates the creditworthiness of the issuers in which it invests. Accounts receivable are spread over many countries and customers. Schlumberger maintains an allowance for uncollectible accounts receivable based on expected collectibility and performs ongoing credit evaluations of its customers’ financial condition. By using derivative financial instruments to hedge certain exposures, Schlumberger exposes itself to some credit risk. Schlumberger minimizes this credit risk by entering into transactions with high-quality counterparties, limiting the exposure to each counterparty and monitoring the financial condition of its counterparties.

Research & Engineering

Research & Engineering

All research and engineering expenditures are expensed as incurred.

Earnings per Share

Earnings per Share

Basic earnings per share of Schlumberger from continuing operations is calculated by dividing income from continuing operations attributable to Schlumberger by the weighted average number of common shares outstanding during the year. Diluted earnings per share is calculated by dividing income from continuing operations attributable to Schlumberger by the sum of (i) unvested restricted stock units and (ii) the weighted average number of common shares outstanding assuming dilution. The weighted average number of common shares outstanding assuming dilution assumes that all in-the-money stock options are exercised at the beginning of the period and the related proceeds are used by Schlumberger to purchase shares of its common stock at the average market price for the period.

The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

	(Stated in millions except per share amounts)
	Schlumberger Income from Continuing Operations		Weighted Average Shares Outstanding		Earnings Per Share from Continuing Operations
2014:
Basic	$	5,643		1,295	$	4.36
Assumed exercise of stock options		—		9
Unvested restricted stock		—		4
Diluted	$	5,643		1,308	$	4.31
2013:
Basic	$	6,801		1,323	$	5.14
Assumed exercise of stock options		—		6
Unvested restricted stock		—		4
Diluted	$	6,801		1,333	$	5.10
2012:
Basic	$	5,230		1,330	$	3.93
Assumed exercise of stock options		—		5
Unvested restricted stock		—		4
Diluted	$	5,230		1,339	$	3.91

Employee stock options to purchase 5 million, 12 million and 21 million shares of common stock at December 31, 2014, 2013 and 2012, respectively, were outstanding but not included in the computation of diluted earnings per share because the option exercise price was greater than the average market price of the common stock, and therefore the effect on diluted earnings per share would have been anti-dilutive.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. This ASU amends the existing accounting standards for revenue recognition and is based on the principlethat revenue should be recognized to depict the transfer of goods or services to a customer at an amount that reflects the considerationa company expects to receive in exchange for those goods or services. Schlumberger is required to adopt this ASU on January 1,2017 and does not expect this ASU to have a material impact on its consolidated financial statements.

In April 2014, the FASB issued ASU 2014-08, Presentation of Financial Statements and Property, Plant, and Equipment – Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which amends the definition of a discontinued operation by raising the threshold for a disposal to qualify as a discontinued operation.  The threshold under the ASU is defined as a strategic shift that has, or will have, a major effect on an entity’s operations and financial results such as a disposal of a major geographical area or a major line of business.  Schlumberger adopted this ASU, on a prospective basis, effective January 1, 2015.

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Discontinued Operations

12 Months Ended

Dec. 31, 2014

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

20. Discontinued Operations

During the second quarter of 2013, Schlumberger completed the wind down of its operations in Iran and, therefore, has classified the historical results of this business as a discontinued operation.

During the second quarter of 2012, Schlumberger sold its Wilson distribution business to National Oilwell Varco Inc. (“NOV”) for $906 million in cash, resulting in a pretax gain of $137 million ($16 million after-tax). During the third quarter of 2012, Schlumberger completed the sale of its 56% interest in CE Franklin Ltd. to NOV for $122 million in cash, resulting in a pretax gain of $30 million ($12 million after-tax). As Wilson and CE Franklin comprised Schlumberger’s entire Distribution segment, the results of this entire segment have been classified as discontinued operations in the Consolidated Statement of Income.

The following table summarizes the results of these discontinued operations:

	(Stated in millions)
	2014			2013			2012
Revenue	$	—		$	102		$	1,399
(Loss) income before taxes	$	(205	)	$	(63	)	$	274
Tax expense		—			(6	)		(37	)
Net income attributable to noncontrolling interests		—			—			(5	)
Gain on divestitures, net of tax		—			—			28
Income (loss) from discontinued operations	$	(205	)	$	(69	)	$	260

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Pension and Other Benefit Plans - Defined Benefit Plan, Amounts That Will be Amortized from Accumulated Other Comprehensive Income (loss) in Next Fiscal Year (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Pension Plans
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial losses	$ 274
Prior service cost (credit)	133
Postretirement medical plan
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Net actuarial losses	17
Prior service cost (credit)	$ (32)

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Goodwill - Changes in Carrying Amount of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 14,706	$ 14,585
Acquisitions	837	343
Divestiture of business		(150)
Other	(56)	(72)
Goodwill, Ending Balance	15,487	14,706
Operating Segments | Reservoir Characterization
Goodwill [Line Items]
Goodwill, Beginning Balance	3,737	3,760
Acquisitions	15	4
Reallocation	83
Other	(23)	(27)
Goodwill, Ending Balance	3,812	3,737
Operating Segments | Drilling
Goodwill [Line Items]
Goodwill, Beginning Balance	8,315	8,337
Acquisitions	271	3
Reallocation	(83)
Other	(15)	(25)
Goodwill, Ending Balance	8,488	8,315
Operating Segments | Production
Goodwill [Line Items]
Goodwill, Beginning Balance	2,654	2,488
Acquisitions	551	336
Divestiture of business		(150)
Other	(18)	(20)
Goodwill, Ending Balance	$ 3,187	$ 2,654

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Financial information for the years ended December 31, 2014, 2013 and 2012, by segment, is as follows:

	(Stated in millions)
	2014
	Revenue			Income before taxes			Assets		Depreciation  and Amortization		Capital Expenditures
Reservoir Characterization	$	12,224		$	3,607		$	8,596	$	1,391	$	1,152
Drilling		18,462			3,872			11,378		1,174		1,328
Production		18,111			3,227			11,848		1,133		1,246
Eliminations & other		(217	)		(130	)		1,577		198		250
Pretax operating income					10,576
Goodwill and intangible assets								20,142
All other assets								2,185
Corporate (1)					(848	)		11,178		198
Interest income (2)					31
Interest expense (3)					(347	)
Charges & credits (4)					(1,773	)
	$	48,580		$	7,639		$	66,904	$	4,094	$	3,976

	(Stated in millions)
	2013
	Revenue			Income before taxes			Assets		Depreciation  and Amortization		Capital Expenditures
Reservoir Characterization	$	12,463		$	3,660		$	8,918	$	1,338	$	1,275
Drilling		17,099			3,293			10,940		1,077		1,291
Production		15,927			2,619			11,185		1,039		1,204
Eliminations & other		(223	)		(228	)		1,974		217		173
Pretax operating income					9,344
Goodwill and intangible assets								19,415
All other assets								2,618
Corporate (1)					(726	)		12,050		208
Interest income (2)					22
Interest expense (3)					(369	)
Charges & credits (4)					420
	$	45,266		$	8,691		$	67,100	$	3,879	$	3,943

	(Stated in millions)
	2012
	Revenue			Income before taxes			Assets		Depreciation and Amortization		Capital Expenditures
Reservoir Characterization	$	11,360		$	3,080		$	8,501	$	1,309	$	1,235
Drilling		15,691			2,778			11,316		1,072		1,668
Production		14,802			2,327			9,889		877		1,439
Eliminations & other		(122	)		(68	)		1,920		191		352
Pretax operating income					8,117
Goodwill and intangible assets								19,387
Discontinued operations assets								246
All other assets								2,267
Corporate (1)					(696	)		8,021		198
Interest income (2)					30
Interest expense (3)					(331	)
Charges & credits (4)					(161	)
	$	41,731		$	6,959		$	61,547	$	3,647	$	4,694

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.

⁽²⁾ Interest income excludes amounts which are included in the segments’ income (2014: $20 million; 2013: $11 million; 2012: $- million).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income (2014: $22 million; 2013: $22 million; 2012: $9 million).

⁽⁴⁾ See Note 3 – Charges and Credits.

Revenue by Geographic Area

Revenue by geographic area for the years ended December 31, 2014, 2013 and 2012 is as follows:

	(Stated in millions)
	2014		2013		2012
North America	$	16,151	$	13,897	$	13,535
Latin America		7,699		7,754		7,554
Europe/CIS/Africa		12,515		12,411		11,510
Middle East & Asia		11,875		10,767		8,717
Eliminations & other		340		437		415
	$	48,580	$	45,266	$	41,731

Fixed Assets Less Accumulated Depreciation by Geographic Area

Fixed Assets less accumulated depreciation by geographic area are as follows:

	(Stated in millions)
	2014		2013		2012
North America	$	4,885	$	4,858	$	4,868
Latin America		1,969		1,889		1,788
Europe/CIS/Africa		3,640		3,452		3,414
Middle East & Asia		3,446		2,991		2,908
Unallocated (1)		1,456		1,906		1,802
	$	15,396	$	15,096	$	14,780

⁽¹⁾ Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

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Pension and Other Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Compensation And Retirement Disclosure [Abstract]

Fair Value of Schlumberger's Pension Plan Assets

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Weighted-Average Assumed Discount Rate, Compensation Increases and Expected Long-Term Rate of Return on Plan Assets Used to Determine Net Pension Cost for US and International Plans

The weighted-average assumed discount rate, compensation increases and the expected long-term rate of return on plan assets used to determine the net pension cost for the US and International plans were as follows:

	US									International
	2014			2013			2012			2014			2013			2012
Discount rate		4.85	%		4.25	%		5.50	%		4.76	%		4.38	%		4.95	%
Compensation increases		4.00	%		4.00	%		4.00	%		4.80	%		4.83	%		4.91	%
Return on plan assets		7.25	%		7.50	%		7.50	%		7.50	%		7.50	%		7.50	%

Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan

Net pension cost for 2014, 2013 and 2012 included the following components:

	(Stated in millions)
	US									International
	2014			2013			2012			2014			2013			2012
Service cost - benefits earned during the period	$	72		$	80		$	68		$	126		$	127		$	86
Interest cost on projected benefit obligation		164			150			152			288			253			241
Expected return on plan assets		(208	)		(200	)		(185	)		(450	)		(384	)		(328	)
Amortization of net loss		82			122			95			94			155			76
Amortization of prior service cost		12			12			12			120			117			120
	$	122		$	164		$	142		$	178		$	268		$	195

The net periodic benefit cost for the US postretirement medical plan included the following components:

	(Stated in millions)
	2014			2013			2012
Service cost — benefits earned during the period	$	43		$	48		$	29
Interest cost on projected benefit obligation		60			56			58
Expected return on plan assets		(45	)		(37	)		(30	)
Amortization of net loss		1			23			16
Amortization of prior service credit		(4	)		(4	)		(7	)
	$	55		$	86		$	66

Weighted-Average Assumed Discount Rate and Compensation Increases Used to Determine Projected Benefit Obligations for US and International Plans

The weighted-average assumed discount rate and compensation increases used to determine the projected benefit obligations for the US and International plans were as follows:

	US						International
	2014			2013			2014			2013
Discount rate		4.15	%		4.85	%		4.07	%		4.76	%
Compensation increases		4.00	%		4.00	%		4.79	%		4.80	%

Changes In Projected Benefit Obligation Plan Assets And Funded Status Of Plans [Table Text Block]

The changes in the projected benefit obligation, plan assets and funded status of the plans were as follows:

	(Stated in millions)
	US						International
	2014			2013			2014			2013
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	$	3,418		$	3,558		$	5,981		$	5,798
Service cost		72			80			126			127
Interest cost		164			150			288			253
Contributions by plan participants		—			—			122			104
Actuarial losses (gains)		627			(232	)		1,000			(168	)
Currency effect		—			—			(90	)		30
Benefits paid		(144	)		(138	)		(178	)		(163	)
Projected benefit obligation at end of year	$	4,137		$	3,418		$	7,249		$	5,981
Change in Plan Assets
Plan assets at fair value at beginning of year	$	3,269		$	2,910		$	6,246		$	5,120
Actual return on plan assets		339			356			502			836
Currency effect		—			—			(102	)		35
Company contributions		85			141			240			314
Contributions by plan participants		—			—			122			104
Benefits paid		(144	)		(138	)		(178	)		(163	)
Plan assets at fair value at end of year	$	3,549		$	3,269		$	6,830		$	6,246
(Unfunded Liability) / Asset	$	(588	)	$	(149	)	$	(419	)	$	265
Amounts Recognized in Balance Sheet
Postretirement Benefits	$	(588	)	$	(149	)	$	(546	)	$	(5	)
Other Assets		—			—			127			270
	$	(588	)	$	(149	)	$	(419	)	$	265
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	1,104		$	687		$	1,658		$	882
Prior service cost		66			78			357			418
	$	1,170		$	765		$	2,015		$	1,300
Accumulated benefit obligation	$	3,805		$	3,158		$	6,793		$	5,593

Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category

The weighted-average allocation of plan assets and the target allocations by asset category are as follows:

	US									International
	Target			2014			2013			Target			2014			2013
Equity securities		37 - 56	%		48	%		50	%		50 - 71	%		58	%		60	%
Debt securities		35 - 62			42			40			20 - 35			32			31
Cash and cash equivalents		0  -  3			2			2			0  -  5			4			3
Alternative investments		0  -  8			8			8			0 - 25			6			6
		100	%		100	%		100	%		100	%		100	%		100	%

Defined Benefit Plan Weighted Average Assumptions Used in Calculating Benefit Obligation and Net Periodic Benefit Cost for US Postretirement Medical Plan

The actuarial assumptions used to determine the accumulated postretirement benefit obligation and net periodic benefit cost for the US postretirement medical plan were as follows:

	Benefit Obligation at December 31,						Net Periodic Benefit Cost for the year
	2014			2013			2014			2013			2012
Discount rate		4.15	%		4.85	%		4.85	%		4.25	%		5.00	%
Return on plan assets		—			—			7.00	%		7.00	%		7.00	%
Current medical cost trend rate		7.00	%		7.25	%		7.25	%		7.50	%		8.00	%
Ultimate medical cost trend rate		5.00	%		5.00	%		5.00	%		5.00	%		5.00	%
Year that the rate reaches the ultimate trend rate		2023			2023			2023			2023			2018

Changes in Accumulated Postretirement Benefit Obligation, Plan Assets and Funded Status

The changes in the accumulated postretirement benefit obligation, plan assets and funded status were as follows:

	(Stated in millions)
	2014			2013
Change in Accumulated Postretirement Benefit Obligation
Benefit obligation at beginning of year	$	1,247		$	1,410
Service cost		43			48
Interest cost		60			56
Contributions by plan participants		6			6
Actuarial losses (gains)		210			(232	)
Benefits paid		(46	)		(41	)
Plan amendments		(299	)		—
Benefit obligation at end of year	$	1,221		$	1,247
Change in Plan Assets
Plan assets at fair value at beginning of year	$	731		$	576
Company contributions		65			83
Contributions by plan participants		6			6
Benefits paid		(46	)		(41	)
Actual return on plan assets		98			107
Plan assets at fair value at end of year	$	854		$	731
Unfunded Liability	$	(367	)	$	(516	)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	242		$	87
Prior service credit		(307	)		(12	)
	$	(65	)	$	75

Effect of One Percentage Point Change in Assumed Health Care Cost Trend Rates

Assumed health care cost trend rates have a significant effect on the amounts reported for the US postretirement medical plan. A one percentage point change in assumed health care cost trend rates would have the following effects:

	(Stated in millions)
	One percentage point increase		One percentage point decrease
Effect on total service and interest cost components	$	42	$	(17	)
Effect on accumulated postretirement benefit obligation	$	37	$	(33	)

Expected Benefits to be Paid Under US and International Pension Plans and Postretirement Medical Plan

The expected benefits to be paid under the US and International pension plans as well as the postretirement medical plan were as follows:

	(Stated in millions)
	Pension Benefits				Postretirement Medical Plan
	US		International
2015	$	155	$	222	$	46
2016		162		240		49
2017		171		256		52
2018		181		274		56
2019		190		290		59
2020 - 2024		1,112		1,675		344

Defined Benefit Plan, Amounts that will be Amortized from Accumulated Other Comprehensive Income (Loss) In Next Fiscal Year

Included in Accumulated other comprehensive loss at December 31, 2014 are non-cash pretax charges which have not yet been recognized in net periodic benefit cost. The estimated portion of each component of Accumulated other comprehensive loss which is expected to be recognized as a component of net periodic benefit cost during the year ending December 31, 2015 is as follows:

	(Stated in millions)
	Pension Plans		Postretirement Medical Plan
Net actuarial losses	$	274	$	17
Prior service cost (credit)	$	133	$	(32	)

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Summary of Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Reconciliation of Earnings Per Share from Continuing Operations

The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

	(Stated in millions except per share amounts)
	Schlumberger Income from Continuing Operations		Weighted Average Shares Outstanding		Earnings Per Share from Continuing Operations
2014:
Basic	$	5,643		1,295	$	4.36
Assumed exercise of stock options		—		9
Unvested restricted stock		—		4
Diluted	$	5,643		1,308	$	4.31
2013:
Basic	$	6,801		1,323	$	5.14
Assumed exercise of stock options		—		6
Unvested restricted stock		—		4
Diluted	$	6,801		1,333	$	5.10
2012:
Basic	$	5,230		1,330	$	3.93
Assumed exercise of stock options		—		5
Unvested restricted stock		—		4
Diluted	$	5,230		1,339	$	3.91

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CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (Retained Earnings, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Retained Earnings
Dividends declared, per share	$ 1.60	$ 1.25	$ 1.10

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Charges and Credits (Tables)

12 Months Ended

Dec. 31, 2014

Restructuring And Related Activities [Abstract]

Summary of the Charges

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
WesternGeco restructuring	$	806	$	25	$	781	Impairments & other
Currency devaluation loss in Venezuela		472		—		472	Impairments & other
Workforce reduction		296		37		259	Impairments & other
Impairment of SPM project		199		72		127	Impairments & other
	$	1,773	$	134	$	1,639

The following is a summary of these charges and credits:

	(Stated in millions)
	Pretax			Tax		Net			Classification
Gain on formation of OneSubsea joint venture	$	(1,028	)	$	—	$	(1,028	)	Gain on formation of OneSubsea
Impairment of equity-method investments		364			19		345		Impairments & other
Provision for accounts receivable		152			30		122		Cost of revenue
Currency devaluation loss in Venezuela		92			—		92		Impairments & other
	$	(420	)	$	49	$	(469	)

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
Merger and integration-related costs	$	128	$	16	$	112	Merger & integration
Workforce reduction		33		6		27	Impairments & other
	$	161	$	22	$	139

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Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments And Contingencies Disclosure [Abstract]
Charge recorded within loss from discontinued operations	$ 205	$ (205)	$ (69)	$ 260

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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
	Currency Translation Adjustments			Cash Flow Hedges			Pension and  Other Postretirement Benefit Plans			Unrealized  Gains on Marketable Securities			Total
Balance, January 1, 2012	$	(993	)	$	(26	)	$	(2,538	)	$	—		$	(3,557	)
Other comprehensive income (loss) before reclassifications		76			92			(1,016	)		141			(707	)
Amounts reclassified from accumulated other comprehensive loss		—			(36	)		312			—			276
Income taxes		—			—			100			—			100
Balance, December 31, 2012		(917	)		30			(3,142	)		141			(3,888	)
Other comprehensive income (loss) before reclassifications		(151	)		49			1,328			35			1,261
Amounts reclassified from accumulated other comprehensive loss		—			(50	)		425			—			375
Income taxes		—			—			(302	)		—			(302	)
Balance, December 31, 2013		(1,068	)		29			(1,691	)		176			(2,554	)
Other comprehensive income (loss) before reclassifications		(463	)		(238	)		(1,285	)		(166	)		(2,152	)
Amounts reclassified from accumulated other comprehensive loss		—			113			305			—			418
Income taxes		—			—			82			—			82
Balance, December 31, 2014	$	(1,531	)	$	(96	)	$	(2,589	)	$	10		$	(4,206	)

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Fixed Assets - Property, Plant and Equipment (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment [Line Items]
Property, plant and equipment	$ 36,964	$ 35,164
Less accumulated depreciation	21,568	20,068
Fixed assets less accumulated depreciation	15,396	15,096	14,780
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment	445	394
Building and Building Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment	3,733	3,534
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment	31,937	29,332
Seismic Vessels
Property Plant And Equipment [Line Items]
Property, plant and equipment	$ 849	$ 1,904

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Stock-based Compensation Plans - Discounted Stock Purchase Plan Assumptions and Resulting Weighted Average Fair Value (Detail) (DSPP, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
DSPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield	1.60%	1.70%	1.60%
Expected volatility	19.00%	24.00%	41.00%
Risk free interest rate	0.10%	0.10%	0.20%
Weighted average fair value per share	$ 12.67	$ 9.91	$ 12.71

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CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Statement [Abstract]
Revenue	$ 48,580		$ 45,266		$ 41,731
Interest and other income	291		165		172
Gain on formation of OneSubsea			1,028
Expenses
Cost of revenue	37,398		35,331		32,885
Research & engineering	1,217		1,174		1,153
General & administrative	475		416		405
Merger & integration					128
Impairments & other	1,773		456		33
Interest	369		391		340
Income from continuing operations before taxes	7,639		8,691		6,959
Taxes on income	1,928		1,848		1,700
Income from continuing operations	5,711		6,843		5,259
Income (loss) from discontinued operations	(205)		(69)		260
Net income	5,506		6,774		5,519
Net income attributable to noncontrolling interests	68		42		29
Net income attributable to Schlumberger	5,438		6,732		5,490
Schlumberger amounts attributable to:
Income from continuing operations	5,643		6,801		5,230
Income (loss) from discontinued operations	(205)		(69)		260
Net income attributable to Schlumberger	$ 5,438		$ 6,732		$ 5,490
Basic earnings per share of Schlumberger:
Income from continuing operations	$ 4.36		$ 5.14		$ 3.93
Income (loss) from discontinued operations	$ (0.16)		$ (0.05)		$ 0.20
Net income	$ 4.20		$ 5.09		$ 4.13
Diluted earnings per share of Schlumberger:
Income from continuing operations	$ 4.31		$ 5.10		$ 3.91
Income (loss) from discontinued operations	$ (0.16)		$ (0.05)		$ 0.19
Net income	$ 4.16	[1]	$ 5.05	[1]	$ 4.10	[1]
Average shares outstanding:
Basic	1,295		1,323		1,330
Assuming dilution	1,308		1,333		1,339

[1] Amounts may not add due to rounding.

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Supplementary Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Cash Paid For Interest And Income Taxes [Table Text Block]

Cash paid for interest and income taxes was as follows:

	(Stated in millions)
	2014		2013		2012
Interest	$	389	$	369	$	313
Income taxes	$	2,048	$	1,729	$	1,736

Interest and Other Income [Table Text Block]

Interest and other income includes the following:

	(Stated in millions)
	2014		2013		2012
Interest income	$	51	$	33	$	30
Earnings of equity method investments		240		132		142
	$	291	$	165	$	172

Change in Allowance for Doubtful Accounts

The change in Allowance for doubtful accounts is as follows:

	(Stated in millions)
	2014			2013			2012
Balance at beginning of year	$	384		$	202		$	177
Provision		39			205			37
Amounts written off		(148	)		(23	)		(10	)
Divestiture of business		—			—			(2	)
Balance at end of year	$	275		$	384		$	202

Accounts Payable and Accrued Liabilities

Accounts payable and accrued liabilities are summarized as follows:

	(Stated in millions)
	2014		2013
Payroll, vacation and employee benefits	$	1,899	$	1,910
Trade		4,344		4,155
Other		3,003		2,772
	$	9,246	$	8,837

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Pension and Other Benefit Plans - Defined Benefit Plan Weighted Average Assumptions Used in Calculating Benefit Obligation and Net Periodic Benefit Cost For US Postretirement Medical Plan (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.15%	4.85%
Current medical cost trend rate	7.00%	7.25%
Ultimate medical cost trend rate	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2023	2023
Postretirement medical plan
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.85%	4.25%	5.00%
Return on plan assets	7.00%	7.00%	7.00%
Current medical cost trend rate	7.25%	7.50%	8.00%
Ultimate medical cost trend rate	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2023	2023	2018

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CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Cash flows from operating activities:
Net Income	$ 5,506		$ 6,774		$ 5,519
Add: Loss (income) from discontinued operations	205		69		(260)
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on formation of OneSubsea			(1,028)
Impairments and other charges	1,773		608
Depreciation and amortization	4,094	[1]	3,879	[1]	3,647	[1]
Pension and other postretirement benefits expense	355		518		403
Stock-based compensation expense	329		315		335
Pension and other postretirement benefits funding	(390)		(538)		(673)
Earnings of equity method investments, less dividends received	(113)		(71)		(61)
Change in operating assets and liabilities:
Increase in receivables	(187)	[2]	(803)	[2]	(2,051)	[2]
(Increase) decrease in inventories	(36)	[2]	188	[2]	(645)	[2]
Decrease (increase) in other current assets	119	[2]	17	[2]	(350)	[2]
Increase in other assets	(134)	[2]	(78)	[2]	(28)	[2]
(Decrease) increase in accounts payable and accrued liabilities	(36)	[2]	654	[2]	876	[2]
Increase in estimated liability for taxes on income	104	[2]	34	[2]	125	[2]
(Decrease) increase in other liabilities	(79)	[2]	60	[2]	1	[2]
Other	(315)	[2]	92	[2]	77	[2]
NET CASH PROVIDED BY OPERATING ACTIVITIES	11,195		10,690		6,915
Cash flows from investing activities:
Capital expenditures	(3,976)		(3,943)		(4,694)
SPM investments	(740)		(902)		(372)
Multiclient seismic data capitalized	(321)		(394)		(351)
Business acquisitions and investments, net of cash acquired	(1,008)		(1,210)		(845)
Sale (purchase) of investments, net	446		(648)		(1,228)
Other	19		218		(55)
NET CASH USED IN INVESTING ACTIVITIES	(5,580)		(6,879)		(7,545)
Cash flows from financing activities:
Dividends paid	(1,968)		(1,608)		(1,432)
Proceeds from employee stock purchase plan	295		270		247
Proceeds from exercise of stock options	530		267		163
Stock repurchase program	(4,678)		(2,596)		(972)
Proceeds from issuance of long-term debt	2,289		4,554		2,832
Repayment of long-term debt	(2,878)		(3,141)		(1,817)
Net increase in short-term borrowings	552		37		621
Other	(38)		18		19
NET CASH USED IN FINANCING ACTIVITIES	(5,896)		(2,199)		(339)
Cash flow provided by (used in) discontinued operations - operating activities	24		(2)		145
Cash flow (used in) provided by discontinued operations - investing activities			(28)		1,011
Cash flow provided by (used in) discontinued operations	24		(30)		1,156
Net (decrease) increase in cash before translation effect	(257)		1,582		187
Translation effect on cash	(85)		(15)		13
Cash, beginning of year	3,472		1,905		1,705
Cash, end of year	$ 3,130		$ 3,472		$ 1,905

[1] Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

[2] Net of the effect of business acquisitions and divestitures.

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Pension and Other Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Frequency of asset performance monitored, years	5 years
Anticipated contributions to postretirement benefit plans	$ 400
Expenses for deferred benefit programs	$ 749	$ 671	$ 620
US Employees Postretirement Benefits Other Than Pensions
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Retirement coverage plan, description	During the fourth quarter of 2014 Schlumberger announced that, effective April 1, 2015, it will change the way it provides healthcare coverage to certain retirees who are age 65 and over. Under the amended plan, these retirees will transfer to individual coverage under the Medicare Exchange. Schlumberger will subsidize the cost of the program by providing these retirees with a Health Reimbursement Account. The annual subsidy may be increased based on medical cost inflation, but it will not be increased more than 5% in any given year.
Percentage of accumulated benefit obligation	66.00%
US Employees Postretirement Benefits Other Than Pensions | Maximum
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Compensation increases	5.00%
Postretirement medical plan | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Investment of assets in government and government-related debt securities under US postretirement medical plan	40.00%
Postretirement medical plan | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Investment of assets in government and government-related debt securities under US postretirement medical plan	60.00%

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Long-term Debt and Debt Facility Agreements - Long-term Debt (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 10,565	$ 10,393
Commercial Paper
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,538
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,597	1,596
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,495	1,495
2.75% Guaranteed Notes due 2015
Debt Instrument [Line Items]
Long-term debt, carrying amount		1,373
1.95% Senior Notes due 2016
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100	1,099
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,100	1,099
1.25% Senior Notes due 2017
Debt Instrument [Line Items]
Long-term debt, carrying amount	1,000	999
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt, carrying amount	999	999
1.50% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Long-term debt, carrying amount	628	697
2.65% Senior Notes due 2016
Debt Instrument [Line Items]
Long-term debt, carrying amount	500	500
Other
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 608	$ 536

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Pension and Other Benefit Plans - Expected Benefits to be Paid Under US and International Pension Plans and Postretirement Medical Plan (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
2015	$ 155
2016	162
2017	171
2018	181
2019	190
2020 - 2024	1,112
International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
2015	222
2016	240
2017	256
2018	274
2019	290
2020 - 2024	1,675
Postretirement medical plan
Pension Plans Postretirement And Other Employee Benefits [Line Items]
2015	46
2016	49
2017	52
2018	56
2019	59
2020 - 2024	$ 344

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Multiclient Seismic Data (Tables)

12 Months Ended

Dec. 31, 2014

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data is as follows:

	(Stated in millions)
	2014			2013
Balance at beginning of year	$	667		$	518
Capitalized in year		321			394
Charged to expense		(195	)		(245	)
	$	793		$	667

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Stockholders' Equity - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Common stock, shares authorized	4,500,000,000
Common stock, par value	$ 0.01
Common stock, shares outstanding	1,275,312,404	1,307,330,369
Preferred stock, shares authorized	200,000,000
Preferred stock, par value	$ 0.01
Preferred stock, issued	0
Other comprehensive income (loss)	$ (1,652)	$ 1,334	$ (331)

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Taxes

14.  Income Taxes

Schlumberger operates in more than 100 tax jurisdictions, where statutory tax rates generally vary from 0% to 40%.

Income from continuing operations before taxes which were subject to United States and non-United States income taxes for each of the three years ended December 31, were as follows:

	(Stated in millions)
	2014		2013		2012
United States	$	1,990	$	1,904	$	1,980
Outside United States		5,649		6,787		4,979
	$	7,639	$	8,691	$	6,959

Schlumberger recorded pretax charges of $1.773 billion in 2014 ($289 million in the US and $1.484 billion outside of the US). Schlumberger recorded net pretax credits of $420 million in 2013 ($53 million of charges in the US and $473 million of net credits outside the US) and $161 million of pretax charges in 2012 ($52 million in the US and $109 million outside the US). These charges and credits are included in the table above and are more fully described in Note 3 – Charges and Credits.

The components of net deferred tax assets (liabilities) were as follows:

	(Stated in millions)
	2014			2013
Postretirement benefits	$	327		$	236
Intangible assets		(1,435	)		(1,502	)
Investments in non-US subsidiaries		(227	)		(282	)
Other, net		183			128
	$	(1,152	)	$	(1,420	)

The above deferred tax balances at December 31, 2014 and 2013 were net of valuation allowances relating to net operating losses in certain countries of $190 million and $238 million, respectively.

The components of Taxes on income were as follows:

	(Stated in millions)
	2014			2013			2012
Current:
United States - Federal	$	718		$	682		$	698
United States - State		51			60			53
Outside United States		1,380			1,211			1,025
	$	2,149		$	1,953		$	1,776
Deferred:
United States - Federal	$	(194	)	$	(109	)	$	(105	)
United States - State		(9	)		(4	)		(7	)
Outside United States		(12	)		34			22
Valuation allowance		(6	)		(26	)		14
	$	(221	)	$	(105	)	$	(76	)
	$	1,928		$	1,848		$	1,700

A reconciliation of the United States statutory federal tax rate (35%) to the consolidated effective tax rate is:

	2014			2013			2012
US statutory federal rate		35	%		35	%		35	%
Non-US income taxed at different rates		(11	)		(12	)		(10	)
Charges and credits (See Note 3)		3			(2	)		—
Other		(2	)		—			(1	)
		25	%		21	%		24	%

A number of the jurisdictions in which Schlumberger operates have tax laws that are not fully defined and are evolving. Schlumberger’s tax filings are subject to regular audit by the tax authorities. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits.

A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions for the years ended December 31, 2014, 2013 and 2012 is as follows:

	(Stated in millions)
	2014			2013			2012
Balance at beginning of year	$	1,452		$	1,453		$	1,353
Additions based on tax positions related to the current year		154			146			156
Additions for tax positions of prior years		96			109			98
Additions related to acquisitions		43			—			—
Impact of changes in exchange rates		(62	)		(47	)		12
Settlements with tax authorities		(27	)		(64	)		(17	)
Reductions for tax positions of prior years		(212	)		(109	)		(103	)
Reductions due to the lapse of the applicable statute of limitations		(42	)		(36	)		(46	)
Balance at end of year	$	1,402		$	1,452		$	1,453

The amounts above exclude accrued interest and penalties of $243 million, $253 million and $250 million at December 31, 2014, 2013 and 2012, respectively.

Schlumberger classifies interest and penalties relating to uncertain tax positions within Taxes on income in the Consolidated Statement of Income. During 2014, 2013 and 2012, Schlumberger recognized $19 million, $30 million and $21 million in interest and penalties, respectively.

The following table summarizes the tax years that are either currently under audit or remain open and subject to examination by the tax authorities in the most significant jurisdictions in which Schlumberger operates:

Brazil	2009 - 2014
Canada	2007 - 2014
Ecuador	2001 - 2014
Mexico	2007 - 2014
Norway	2013 - 2014
Russia	2011 - 2014
Saudi Arabia	2001 - 2014
United Kingdom	2009 - 2014
United States	2011 - 2014

In certain of the jurisdictions noted above, Schlumberger operates through more than one legal entity, each of which may have different open years subject to examination. The table above presents the open years subject to examination for the most material of the legal entities in each jurisdiction. Additionally, it is important to note that tax years are technically not closed until the statute of limitations in each jurisdiction expires. In the jurisdictions noted above, the statute of limitations can extend beyond the open years subject to examination.

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Goodwill (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by reporting unit were as follows:

										(Stated in millions)
	Reservoir Characterization			Drilling			Production			Total
Balance at January 1, 2013	$	3,760		$	8,337		$	2,488			$	14,585
Acquisitions		4			3			336				343
Divestiture of business		—			—			(150	)			(150	)
Other		(27	)		(25	)		(20	)			(72	)
Balance, December 31, 2013		3,737			8,315			2,654				14,706
Acquisitions		15			271			551				837
Reallocation		83			(83	)		—				—
Other		(23	)		(15	)		(18	)			(56	)
Balance, December 31, 2014	$	3,812		$	8,488		$	3,187			$	15,487

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Pension and Other Benefit Plans - Effect of One Percentage Point Change in Assumed Health Care Cost Trend Rates (Detail) (Postretirement medical plan, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Postretirement medical plan
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Effect on total service and interest cost components, One percentage point increase	$ 42
Effect on accumulated postretirement benefit obligation, One percentage point increase	37
Effect on total service and interest cost components, One percentage point decrease	(17)
Effect on accumulated postretirement benefit obligation, One percentage point decrease	$ (33)

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Contingencies

12 Months Ended

Dec. 31, 2014

Commitments And Contingencies Disclosure [Abstract]

Contingencies Disclosure [Text Block]

16. Contingencies

In 2009, United States officials began a grand jury investigation and an associated regulatory inquiry, both related to certain historical Schlumberger operations in countrieswhere Schlumberger no longer operates that are subject to United States trade and economic sanctions. Governmental agencies and authorities have a broad range of civil and criminal penalties that they may seek to impose for violations of trade and economic sanction laws including, but not limited to, disgorgement, fines, penalties and modifications to business practices. In recent years, these agencies and authorities have obtained a wide range of penalties in settlements with companies arising from trade and economic sanction investigations, including in some cases forfeitures, fines and other penalties in the tens and hundreds of millions of dollars. Schlumberger continues to cooperate and has been discussing the resolution of this matter with the governmental authorities. During the second quarter of 2014, these discussions progressed to a point whereby Schlumberger determined that it was appropriate to increase its liability for this contingency.  Accordingly, Schlumberger recorded a $205 million charge, which is reflected within Loss from discontinued operations in the Consolidated Statement of Income. However, no certainty exists that a settlement will be reached or if so, the amount of any such settlement.  Therefore, the ultimate loss could be greater or less than the amount accrued.

Schlumberger and its subsidiaries are party to various other legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to these other legal proceedings is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.  

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Stock-based Compensation Plans - Weighted-Average Assumptions (Detail) (Employee Stock Option, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield	1.60%	1.70%	1.50%
Expected volatility	37.00%	38.00%	39.00%
Risk free interest rate	2.20%	1.20%	1.50%
Expected option life in years	7 years	7 years	6 years 10 months 24 days
Weighted-average fair value per share	$ 34.20	$ 23.93	$ 25.26

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CONSOLIDATED STATEMENT OF EQUITY (USD $) In Millions, except Share data	Total	Common Stock Issued	Common Stock In Treasury	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2011	$ 31,392	$ 11,639	$ (5,679)	$ 28,860	$ (3,557)	$ 129
Balance, shares at Dec. 31, 2011	1,334,000,000	1,434,000,000	(100,000,000)
Net income	5,519			5,490		29
Net income	5,519
Currency translation adjustments excluding amount from sale of CE Franklin	71				71
Change in unrealized gain on marketable securities	141				141
Changes in fair value of cash flow hedges	56				56
Pension and other postretirement benefit plans	(604)				(604)
Shares sold to optionees less shares exchanged	163	(75)	238
Shares sold to optionees, less shares exchanged, shares	4,000,000		4,000,000
Vesting of restricted stock		(20)	20
Shares issued under employee stock purchase plan	247	16	231
Shares issued under employee stock purchase plan, shares	4,000,000		4,000,000
Stock repurchase program	(972)		(972)
Stock repurchase program, shares	(14,000,000)		(14,000,000)
Stock-based compensation cost	335	335
Sale of CE Franklin	(63)				5	(68)
Dividends declared	(1,463)			(1,463)
Other	36	17	2			17
Currency translation adjustments	76
Change in unrealized gain on marketable securities	141				141
Shares sold to optionees, less shares exchanged, shares	4,171,000
Balance at Dec. 31, 2012	34,858	11,912	(6,160)	32,887	(3,888)	107
Balance, shares at Dec. 31, 2012	1,328,000,000	1,434,000,000	(106,000,000)
Net income	6,774			6,732		42
Change in unrealized gain on marketable securities	35				35
Changes in fair value of cash flow hedges	(1)				(1)
Pension and other postretirement benefit plans	1,451				1,451
Shares sold to optionees less shares exchanged	267	(44)	311
Shares sold to optionees, less shares exchanged, shares	5,000,000		5,000,000
Vesting of restricted stock		(56)	56
Vesting of restricted stock, shares	1,000,000		1,000,000
Shares issued under employee stock purchase plan	270	18	252
Shares issued under employee stock purchase plan, shares	4,000,000		4,000,000
Stock repurchase program	(2,596)		(2,596)
Stock repurchase program, shares	(31,000,000)		(31,000,000)
Stock-based compensation cost	315	315
Dividends declared	(1,653)			(1,653)
Other	66	47	2			17
Currency translation adjustments	(151)				(151)
Change in unrealized gain on marketable securities	35				35
Shares sold to optionees, less shares exchanged, shares	5,168,000
Balance at Dec. 31, 2013	39,635	12,192	(8,135)	37,966	(2,554)	166
Balance, shares at Dec. 31, 2013	1,307,000,000	1,434,000,000	(127,000,000)
Net income	5,506			5,438		68
Change in unrealized gain on marketable securities	(166)				(166)
Changes in fair value of cash flow hedges	(125)				(125)
Pension and other postretirement benefit plans	(898)				(898)
Shares sold to optionees less shares exchanged	530	(26)	556
Shares sold to optionees, less shares exchanged, shares	9,000,000		9,000,000
Vesting of restricted stock		(79)	79
Vesting of restricted stock, shares	1,000,000		1,000,000
Shares issued under employee stock purchase plan	295	33	262
Shares issued under employee stock purchase plan, shares	4,000,000		4,000,000
Stock repurchase program	(4,678)		(4,678)
Stock repurchase program, shares	(48,000,000)		(48,000,000)
Stock-based compensation cost	329	329
Dividends declared	(2,071)			(2,071)
Shares issued for acquisition	213	72	141
Other	(58)	(26)	3			(35)
Currency translation adjustments	(463)				(463)
Change in unrealized gain on marketable securities	(166)				(166)
Shares sold to optionees, less shares exchanged, shares	8,269,000
Shares issued for acquisition, shares	2,000,000		2,000,000
Balance at Dec. 31, 2014	$ 38,049	$ 12,495	$ (11,772)	$ 41,333	$ (4,206)	$ 199
Balance, shares at Dec. 31, 2014	1,275,000,000	1,434,000,000	(159,000,000)

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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 5,506	$ 6,774	$ 5,519
Currency translation adjustments
Unrealized net change arising during the period	(463)	(151)	76
Marketable securities
Unrealized gain (loss) arising during the period	(166)	35	141
Cash flow hedges
Net gain (loss) on cash flow hedges	(238)	49	92
Reclassification to net income of net realized (gain) loss	113	(50)	(36)
Actuarial gain (loss)
Actuarial gain (loss) arising during the period	(1,285)	1,328	(1,016)
Amortization to net income of net actuarial loss	177	300	187
Prior service cost
Amortization to net income of net prior service cost	128	125	125
Income taxes on pension and other postretirement benefit plans	82	(302)	100
Comprehensive income	3,854	8,108	5,188
Comprehensive income attributable to noncontrolling interests	68	42	29
Comprehensive income attributable to Schlumberger	$ 3,786	$ 8,066	$ 5,159

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Intangible Assets

12 Months Ended

Dec. 31, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

9. Intangible Assets

A summary of intangible assets follows:

	(Stated in millions)
	2014						2013
	Gross Book Value		Accumulated Amortization		Net Book Value		Gross Book Value		Accumulated Amortization		Net Book Value
Technology/Technical Know-How	$	1,747	$	535	$	1,212	$	1,960	$	597	$	1,363
Tradenames		1,641		319		1,322		1,647		257		1,390
Customer Relationships		2,531		523		2,008		2,263		407		1,856
Other		380		268		112		435		335		100
	$	6,299	$	1,645	$	4,654	$	6,305	$	1,596	$	4,709

Amortization expense was $344 million in 2014, $330 million in 2013 and $331 million in 2012.

Based on the carrying value of intangible assets at December 31, 2014, amortization expense for the subsequent five years is estimated to be as follows: 2015: $349 million, 2016: $338 million, 2017: $329 million, 2018: $319 million and 2019: $307 million.

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Supplementary Information - Change in Allowance for Doubtful Accounts (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Balance at beginning of year	$ 384	$ 202	$ 177
Provision	39	205	37
Amounts written off	(148)	(23)	(10)
Divestiture of business			(2)
Balance at end of year	$ 275	$ 384	$ 202

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Pension and Other Benefit Plans - Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target allocation of assets	100.00%	100.00%
Target Allocation Percentage of Assets, Total	100.00%	100.00%
International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target allocation of assets	100.00%	100.00%
Target Allocation Percentage of Assets, Total	100.00%	100.00%
Equity securities | US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	37.00%
Target Allocation Percentage of Assets, Range Maximum	56.00%
Target allocation of assets	48.00%	50.00%
Equity securities | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	50.00%
Target Allocation Percentage of Assets, Range Maximum	71.00%
Target allocation of assets	58.00%	60.00%
Debt securities | US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	35.00%
Target Allocation Percentage of Assets, Range Maximum	62.00%
Target allocation of assets	42.00%	40.00%
Debt securities | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	20.00%
Target Allocation Percentage of Assets, Range Maximum	35.00%
Target allocation of assets	32.00%	31.00%
Cash and cash equivalents | US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	0.00%
Target Allocation Percentage of Assets, Range Maximum	3.00%
Target allocation of assets	2.00%	2.00%
Cash and cash equivalents | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	0.00%
Target Allocation Percentage of Assets, Range Maximum	5.00%
Target allocation of assets	4.00%	3.00%
Alternative investments | US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	0.00%
Target Allocation Percentage of Assets, Range Maximum	8.00%
Target allocation of assets	8.00%	8.00%
Alternative investments | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Target Allocation Percentage of Assets, Range Minimum	0.00%
Target Allocation Percentage of Assets, Range Maximum	25.00%
Target allocation of assets	6.00%	6.00%

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Pension and Other Benefit Plans - Weighted-Average Assumed Discount Rate and Compensation Increases Used to Determine Projected Benefit Obligations for US and International Plans (Detail)	Dec. 31, 2014	Dec. 31, 2013
US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.15%	4.85%
Compensation increases	4.00%	4.00%
International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	4.07%	4.76%
Compensation increases	4.79%	4.80%

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Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	SLB
Entity Registrant Name	SCHLUMBERGER LTD /NV/
Entity Central Index Key	0000087347
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	1,275,312,404
Entity Public Float		$ 152.9

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Long-term Debt and Debt Facility Agreements

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Long-term Debt and Debt Facility Agreements

10. Long-term Debt and Debt Facility Agreements

Long-term Debt consists of the following:

	(Stated in millions)
	2014		2013
3.30% Senior Notes due 2021	$	1,597	$	1,596
3.65% Senior Notes due 2023		1,495		1,495
2.75% Guaranteed Notes due 2015 (1)		—		1,373
1.95% Senior Notes due 2016		1,100		1,099
4.20% Senior Notes due 2021		1,100		1,099
1.25% Senior Notes due 2017		1,000		999
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019(1)		628		697
2.65% Senior Notes due 2016 (2)		500		500
Commercial paper borrowings		1,538		—
Other		608		536
	$	10,565	$	10,393

⁽¹⁾ Schlumberger maintains a €5.0 billion Guaranteed Euro Medium Term Note program that provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro, US dollar or other currencies. The following is a summary of outstanding debt that was issued under this program:

· Schlumberger issued €0.5 billion 1.50% Guaranteed Notes due 2019 in the fourth quarter of 2013.  Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate equal to three-month LIBOR plus approximately 64 basis points.

· Schlumberger issued €1.0 billion 2.75% Guaranteed Notes due 2015 in the fourth quarter of 2010. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 2.56%.

⁽²⁾ Schlumberger entered into agreements to swap these dollar notes for euros on the date of issue until maturity, effectively making this a euro-denominated debt on which Schlumberger pays interest in euros at a rate of 2.39%.

Schlumberger Limited fully and unconditionally guarantees the securities issued by certain of its subsidiaries, including securities issued by Schlumberger Investment SA, a wholly-owned finance subsidiary of Schlumberger.

At December 31, 2014, Schlumberger had separate committed debt facility agreements aggregating $3.9 billion with commercial banks, of which $2.3 billion was available and unused. This included $3.5 billion of committed facilities which supports commercial paper programs, of which $250 million mature in July 2016, $1.75 billion mature in July 2018 and $1.5 billion mature in November 2018. Interest rates and other terms of borrowing under these lines of credit vary from country to country.

Commercial paper borrowings are classified as long-term debt to the extent of their backup by available and unused committed credit facilities maturing in more than one year and to the extent it is Schlumberger’s intent to maintain these obligations for longer than one year. Borrowings under the commercial paper program at December 31, 2014 were $1.5 billion, all of which were classified within Long-term debt in the Consolidated Balance Sheet.  At December 31, 2013, borrowings under the commercial paper program were $95 million, all of which were classified within Long-term debt – current portion in the Consolidated Balance Sheet.

The weighted average interest rate on variable rate debt as of December 31, 2014 was 1.3%.

Long-term Debt as of December 31, 2014, is due as follows: $1.6 billion in 2016, $1.0 billion in 2017, $1.9 billion in 2018, $0.9 billion in 2019, $2.7 billion in 2021, $1.0 billion in 2022 and $1.5 billion in 2023.

The fair value of Schlumberger’s Long-term Debt at December 31, 2014 and December 31, 2013 was $10.7 billion and $10.4 billion, respectively, and was estimated based on quoted market prices.

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Income Taxes - Tax Years Subject to Examination by Tax Authorities (Detail)	12 Months Ended
	Dec. 31, 2014
Brazil
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2009 - 2014
Canada
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2007 - 2014
Ecuador
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2001 - 2014
Mexico
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2007 - 2014
Norway
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2013 - 2014
Russia
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2011 - 2014
Saudi Arabia
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2001 - 2014
United Kingdom
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2009 - 2014
United States
Disclosure Income Tax Components Of Consolidated Income Taxes Detail [Line Items]
Income tax examination, year(s) under examination	2011 - 2014

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Pension and Other Benefit Plans - Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
US Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	$ 72	$ 80	$ 68
Interest cost on projected benefit obligation and on accumulated postretirement benefit obligation	164	150	152
Expected return on plan assets	(208)	(200)	(185)
Amortization of net loss	82	122	95
Amortization of prior service cost	12	12	12
Total pension cost	122	164	142
International
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	126	127	86
Interest cost on projected benefit obligation and on accumulated postretirement benefit obligation	288	253	241
Expected return on plan assets	(450)	(384)	(328)
Amortization of net loss	94	155	76
Amortization of prior service cost	120	117	120
Total pension cost	178	268	195
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	43	48	29
Interest cost on projected benefit obligation and on accumulated postretirement benefit obligation	60	56	58
Expected return on plan assets	(45)	(37)	(30)
Amortization of net loss	1	23	16
Amortization of prior service cost	(4)	(4)	(7)
Total pension cost	$ 55	$ 86	$ 66

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CONSOLIDATED BALANCE SHEET (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets
Cash	$ 3,130	$ 3,472
Short-term investments	4,371	4,898
Receivables less allowance for doubtful accounts (2014 - $275; 2013 - $384)	11,171	11,497
Inventories	4,628	4,603
Deferred taxes	144	288
Other current assets	1,250	1,467
Current assets total	24,694	26,225
Fixed Income Investments, held to maturity	442	363
Investments in Affiliated Companies	3,235	3,317
Fixed Assets less accumulated depreciation	15,396	15,096
Multiclient Seismic Data	793	667
Goodwill	15,487	14,706
Intangible Assets	4,654	4,709
Other Assets	2,203	2,017
Total Assets	66,904	67,100
Current Liabilities
Accounts payable and accrued liabilities	9,246	8,837
Estimated liability for taxes on income	1,647	1,490
Long-term debt - current portion	1,244	1,819
Short-term borrowings	1,521	964
Dividends payable	518	415
Current Liabilities Total	14,176	13,525
Long-term Debt	10,565	10,393
Postretirement Benefits	1,501	670
Deferred Taxes	1,296	1,708
Other Liabilities	1,317	1,169
Total Liabilities	28,855	27,465
Equity
Common stock	12,495	12,192
Treasury stock	(11,772)	(8,135)
Retained earnings	41,333	37,966
Accumulated other comprehensive loss	(4,206)	(2,554)
Schlumberger stockholders’ equity	37,850	39,469
Noncontrolling interests	199	166
Total equity	38,049	39,635
Liabilities and stockholders equity	$ 66,904	$ 67,100

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Acquisitions

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Acquisitions

4. Acquisitions

Formation of OneSubsea Joint Venture

On June 30, 2013, Schlumberger and Cameron completed the formation of OneSubsea, a joint venture to manufacture and develop products, systems and services for the subsea oil and gas market. Schlumberger and Cameron each contributed all of their respective subsea businesses to the joint venture and Schlumberger made a $600 million cash payment to Cameron. Schlumberger owns 40% of OneSubsea and accounts for this investment under the equity method. Schlumberger recognized a pretax and after-tax gain of $1.028 billion, which is classified as Gain on formation of OneSubsea in the Consolidated Statement of Income, as a result of the deconsolidation of its subsea business. This gain is equal to the difference between the fair value of the Schlumberger subsea business, which was determined based on the present value of its estimated future cash flows, and its carrying value at the time of closing.  

Other

Schlumberger made other acquisitions and investments for cash payments, net of cash acquired, of $1.008 billion during 2014, $610 million during 2013, and $845 million during 2012.  Additionally, during 2014, Schlumberger issued 2.1 million shares of its common stock, valued at $213 million, in connection with an acquisition.  None of these transactions were significant to Schlumberger’s consolidated financial statements, individually or in the aggregate.

On January 20, 2015, Schlumberger announced that it has entered into an agreement to acquire a minority ownership of approximately 45% in Eurasia Drilling Company Limited, the largest provider of onshore drilling services in Russia.  The total cost of this transaction, including an option which will allow Schlumberger, at its election, to purchase the remaining shares during a two-year period commencing on the third anniversary of the closing of the transaction, is approximately $1.7 billion in cash.  This transaction is expected to close during the first quarter of 2015.

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Charges and Credits

12 Months Ended

Dec. 31, 2014

Restructuring And Related Activities [Abstract]

Charges and Credits

3. Charges and Credits

Schlumberger recorded the following charges and credits in continuing operations during 2014, 2013 and 2012:

2014

· Due to the expectation of lower exploration spending as a result of lower commodity prices, during the fourth quarter of 2014, Schlumberger decided to restructure its WesternGeco marine seismic fleet in order to lower its operating costs.  Three previous-generation acquisition vessels with lower towing capacity and higher operating costs will be converted to source vessels, allowing for the termination of two third-party source vessel leases and the retirement of two owned source vessels.

As a result of this restructuring, Schlumberger performed an impairment test and determined that the carrying values of certain of its vessels exceeded their respective fair values by $590 million.  This impairment charge relates to the six Explorer-class vessels which were acquired at a premium in the 2007 purchase of Eastern Echo Holdings Plc.  The fair value of these vessels was estimated primarily based on the replacement cost method, which was largely based on unobservable inputs that required significant judgments.

In addition to the $590 million impairment charge relating to these six vessels, Schlumberger also recorded an $85 million impairment charge relating to a seismic intangible asset and $131 million of other charges primarily related to lease termination costs and other seismic assets as a result of the restructuring.  Schlumberger did not incur any significant cash expenditures as a result of these charges.

· During 2014, Venezuela enacted certain changes to its foreign exchange system such that, in addition to the official rate of 6.3 Venezuelan Bolivares fuertes per US dollar, there are currently two other legal exchange rates that may be obtained via different exchange rate mechanisms.  These changes included the expansion of what is known as the SICAD I auction rate and the introduction of the SICAD II auction process.  The SICAD I and SICAD II exchange rates were approximately 11 and 50 Venezuelan Bolivares fuertes to the US dollar, respectively, at December 31, 2014.

Although the functional currency of Schlumberger’s operations in Venezuela is the US dollar, a portion of the transactions are denominated in local currency.  Schlumberger has historically applied the official exchange rate to remeasure local currency transactions and balances into US dollars.

Effective December 31, 2014, Schlumberger concluded that it was appropriate to apply the SICAD II exchange rate as it now believes that this rate best represents the economics of Schlumberger’s business activity in Venezuela.  As a result, Schlumberger recorded a $472 million devaluation charge during the fourth quarter of 2014.

Going forward, this change will result in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income.  For example, if Schlumberger had applied an exchange rate of 50 Venezuelan Bolivares fuertes to the US dollar throughout 2014, it would have reduced Schlumberger earnings by approximately $0.08 per share.

· In response to lower commodity pricing and anticipated lower exploration and production spending in 2015, Schlumberger decided during the fourth quarter of 2014 to reduce its overall headcount primarily to better align with anticipated activity levels for 2015.  As a result of these reductions, Schlumberger recorded a charge of $296 million in the fourth quarter of 2014.  Depending on how the market situation evolves, further actions may be necessary, which could result in additional charges in future periods.

· During the fourth quarter of 2014, Schlumberger determined that, primarily as a result of the recent decline in commodity prices, the carrying value of its investment in an SPM development project in the Eagle Ford Shale was in excess of its fair value.  Accordingly, Schlumberger recorded a $199 million impairment charge.  The fair value of this investment was estimated based on the projected present value of future cash flows, which included unobservable inputs that required significant judgments.

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
WesternGeco restructuring	$	806	$	25	$	781	Impairments & other
Currency devaluation loss in Venezuela		472		—		472	Impairments & other
Workforce reduction		296		37		259	Impairments & other
Impairment of SPM project		199		72		127	Impairments & other
	$	1,773	$	134	$	1,639

2013

· During the fourth quarter, Schlumberger recorded a $152 million provision relating to accounts receivable from a client in Brazil that filed for bankruptcy.

● During the second quarter, Schlumberger recorded a $1.028 billion gain as a result of the deconsolidation of its subsea business in connection with the formation of the OneSubsea joint venture with Cameron International Corporation (“Cameron”). Refer to Note 4 – Acquisitions for further details.

● During the second quarter, Schlumberger recorded a $222 million impairment charge relating to an investment in a company involved in developing drilling-related technology and a $142 million impairment charge relating to an investment in a contract drilling business.

● In February 2013, Venezuela’s currency was devalued from the prior exchange rate of 4.3 Bolivar Fuertes per US dollar to 6.3 Bolivar fuertes per US dollar. As a result, Schlumberger recorded a $92 million devaluation charge during the first quarter of 2013.

The following is a summary of these charges and credits:

	(Stated in millions)
	Pretax			Tax		Net			Classification
Gain on formation of OneSubsea joint venture	$	(1,028	)	$	—	$	(1,028	)	Gain on formation of OneSubsea
Impairment of equity-method investments		364			19		345		Impairments & other
Provision for accounts receivable		152			30		122		Cost of revenue
Currency devaluation loss in Venezuela		92			—		92		Impairments & other
	$	(420	)	$	49	$	(469	)

2012

● Schlumberger recorded merger and integration-related charges throughout 2012 of $128 million in connection with its 2010 acquisitions of Smith International, Inc. and Geoservices.

● During the fourth quarter, Schlumberger recorded a charge of $33 million relating to severance in connection with an initiative to rationalize global overhead costs.

The following is a summary of these charges:

	(Stated in millions)
	Pretax		Tax		Net		Classification
Merger and integration-related costs	$	128	$	16	$	112	Merger & integration
Workforce reduction		33		6		27	Impairments & other
	$	161	$	22	$	139

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Leases and Lease Commitments

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Leases and Lease Commitments

15. Leases and Lease Commitments

Total rental expense was $2.1 billion in 2014, $1.9 billion in 2013, and $1.9 billion in 2012.

Future minimum rental commitments under noncancelable operating leases for each of the next five years are as follows:

(Stated in millions)
2015	$	330
2016		259
2017		197
2018		156
2019		134
Thereafter		554
	$	1,630

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Derivative Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2014

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

11. Derivative Instruments and Hedging Activities

Schlumberger is exposed to market risks related to fluctuations in interest rates and foreign currency exchange rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivative transactions for speculative purposes.

Interest Rate Risk

Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio and occasionally interest rate swaps to mitigate the exposure to changes in interest rates.

During the fourth quarter of 2013, Schlumberger entered into a cross currency swap for a notional amount of €0.5 billion in order to hedge changes in the fair value of Schlumberger’s €0.5 billion 1.50% Guaranteed Notes due 2019.  Under the terms of this swap, Schlumberger will receive interest at a fixed rate of 1.50% on the euro notional amount and pay interest at a floating rate of three-month LIBOR plus approximately 64 basis points on the US dollar notional amount.

This cross currency swap is designated as a fair value hedge of the underlying debt.  This derivative instrument is marked to market with gains and losses recognized currently in income to largely offset the respective gains and losses recognized on changes in the fair value of the hedged debt.  

At December 31, 2014, Schlumberger had fixed rate debt aggregating $9.0 billion and variable rate debt aggregating $4.3 billion, after taking into account the effect of the swap.

Short-term investments and Fixed income investments, held to maturity, totaled $4.8 billion at December 31, 2014. The carrying value of these investments approximated fair value, which was estimated using quoted market prices for those or similar investments.

Foreign Currency Exchange Rate Risk

As a multinational company, Schlumberger conducts its business in approximately 85 countries. Schlumberger’s functional currency is primarily the US dollar. Approximately 81% of Schlumberger’s revenues in 2014 was denominated in US dollars. However, outside the United States, a significant portion of Schlumberger’s expenses is incurred in foreign currencies. Therefore, when the US dollar weakens (strengthens) in relation to the foreign currencies of the countries in which Schlumberger conducts business, the US dollar–reported expenses will increase (decrease).  

Schlumberger is exposed to risks on future cash flows to the extent that the local currency is not the functional currency and expenses denominated in local currency are not equal to revenues denominated in local currency. Schlumberger is also exposed to risks on future cash flows relating to certain of its fixed rate debt which is denominated in currencies other than the functional currency. Schlumberger uses foreign currency forward contracts and foreign currency options to provide a hedge against a portion of these cash flow risks. These contracts are accounted for as cash flow hedges, with the effective portion of changes in the fair value of the hedge recorded on the Consolidated Balance Sheet and in Accumulated Other Comprehensive Loss. Amounts recorded in Accumulated Other Comprehensive Loss are reclassified into earnings in the same period or periods that the hedged item is recognized in earnings. The ineffective portion of changes in the fair value of hedging instruments, if any, is recorded directly to earnings.

At December 31, 2014, Schlumberger recognized a cumulative net $96 million loss in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges, the majority of which is expected to be reclassified into earnings within the next 12 months.

Schlumberger is exposed to changes in the fair value of assets and liabilities which are denominated in currencies other than the functional currency. While Schlumberger uses foreign currency forward contracts and foreign currency options to economically hedge this exposure as it relates to certain currencies, these contracts are not designated as hedges for accounting purposes. Instead the fair value of the contracts are recorded on the Consolidated Balance Sheet and changes in the fair value are recognized in the Consolidated Statement of Income as are changes in fair value of the hedged item.

At December 31, 2014, contracts were outstanding for the US dollar equivalent of $6.8 billion in various foreign currencies, of which $2.5 billion relate to hedges of debt denominated in currencies other than the functional currency.

The fair values of outstanding derivative instruments are summarized as follows:

	(Stated in millions)
	Fair Value of Derivatives				Consolidated Balance Sheet Classification
Derivative Assets	2014		2013
Derivatives designated as hedges:
Foreign exchange contracts	$	3	$	98	Other current assets
Foreign exchange contracts		32		24	Other Assets
Cross currency swap		—		27	Other Assets
		35		149
Derivatives not designated as hedges:
Foreign exchange contracts		5		10	Other current assets
Foreign exchange contracts		—		4	Other Assets
		5		14
	$	40	$	163
Derivative Liabilities
Derivatives designated as hedges:
Foreign exchange contracts	$	80	$	14	Accounts payable and accrued liabilities
Foreign exchange contracts		105		1	Other Liabilities
Cross currency swap		42		—	Other Liabilities
		227		15
Derivatives not designated as hedges:
Foreign exchange contracts		28		2	Accounts payable and accrued liabilities
	$	255	$	17

The fair value of all outstanding derivatives is determined using a model with inputs that are observable in the market or can be derived from or corroborated by observable data.

The effect of derivative instruments designated as fair value hedges and those not designated as hedges on the Consolidated Statement of Income was as follows:

	(Stated in millions)
	Gain (Loss) Recognized in Income								Consolidated Statement of
	2014			2013			2012		Income Classification
Derivatives designated as fair value hedges:
Cross currency swap	$	(82	)	$	15		$	1	Interest expense
Derivatives not designated as hedges:
Foreign exchange contracts	$	(95	)	$	(2	)	$	5	Cost of revenue
Commodity contracts		—			—			1	Cost of revenue
	$	(95	)	$	(2	)	$	6

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Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 48,580		$ 45,266		$ 41,731
Income before taxes	7,639		8,691		6,959
Assets	66,904		67,100		61,547
Depreciation and amortization	4,094	[1]	3,879	[1]	3,647	[1]
Capital Expenditures	3,976		3,943		4,694
Discontinued Operations
Segment Reporting Information [Line Items]
Assets					246
Operating Segments
Segment Reporting Information [Line Items]
Revenue	48,580		45,266		41,731
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	12,224		12,463		11,360
Income before taxes	3,607		3,660		3,080
Assets	8,596		8,918		8,501
Depreciation and amortization	1,391		1,338		1,309
Capital Expenditures	1,152		1,275		1,235
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	18,462		17,099		15,691
Income before taxes	3,872		3,293		2,778
Assets	11,378		10,940		11,316
Depreciation and amortization	1,174		1,077		1,072
Capital Expenditures	1,328		1,291		1,668
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	18,111		15,927		14,802
Income before taxes	3,227		2,619		2,327
Assets	11,848		11,185		9,889
Depreciation and amortization	1,133		1,039		877
Capital Expenditures	1,246		1,204		1,439
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	(217)		(223)		(122)
Income before taxes	(130)		(228)		(68)
Assets	1,577		1,974		1,920
Depreciation and amortization	198		217		191
Capital Expenditures	250		173		352
Corporate
Segment Reporting Information [Line Items]
Income before taxes	(848)	[2]	(726)	[2]	(696)	[2]
Assets	11,178	[2]	12,050	[2]	8,021	[2]
Depreciation and amortization	198	[2]	208	[2]	198	[2]
Goodwill and intangible assets
Segment Reporting Information [Line Items]
Assets	20,142		19,415		19,387
Other Assets
Segment Reporting Information [Line Items]
Assets	2,185		2,618		2,267
Pretax operating income
Segment Reporting Information [Line Items]
Income before taxes	10,576		9,344		8,117
Interest income
Segment Reporting Information [Line Items]
Income before taxes	31	[3]	22	[3]	30	[3]
Interest expense
Segment Reporting Information [Line Items]
Income before taxes	(347)	[4]	(369)	[4]	(331)	[4]
Charges And Credits
Segment Reporting Information [Line Items]
Income before taxes	$ (1,773)	[5]	$ 420	[5]	$ (161)	[5]

[1] Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

[2] Comprised principally of certain corporate expenses not allocated to the segments, interest on postretirement medical benefits, stock-based compensation costs, amortization expense associated with certain intangible and other nonoperating items. Corporate assets consist of cash, short-term investments, fixed income investments, held to maturity and investments in affiliates.

[3] Interest income excludes amounts which are included in the segments’ income (2014: $20 million; 2013: $11 million; 2012: $- million).

[4] Interest expense excludes amounts which are included in the segments’ income (2014: $22 million; 2013: $22 million; 2012: $9 million).

[5] See Note 3 – Charges and Credits.

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Multiclient Seismic Data

12 Months Ended

Dec. 31, 2014

Multiclient Seismic Data [Abstract]

Multiclient Seismic Data

7. Multiclient Seismic Data

The change in the carrying amount of multiclient seismic data is as follows:

	(Stated in millions)
	2014			2013
Balance at beginning of year	$	667		$	518
Capitalized in year		321			394
Charged to expense		(195	)		(245	)
	$	793		$	667

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Long-term Debt and Debt Facility Agreements - Long-term Debt (Parenthetical) (Detail) (EUR €) In Billions, unless otherwise specified	12 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2010	Dec. 31, 2013
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	3.30%	3.30%		3.30%
Debt instrument maturity date	2021	2021
3.65% Senior Notes due 2023
Debt Instrument [Line Items]
Debt instrument interest rate	3.65%	3.65%		3.65%
Debt instrument maturity date	2023	2023
2.75% Guaranteed Notes due 2015
Debt Instrument [Line Items]
Debt instrument interest rate	2.75%	2.75%	2.75%	2.75%
Debt instrument maturity date	2015	2015	2015
Long-term debt, carrying amount			€ 1.0
Effective interest rate on euro denominated debt		2.56%		2.56%
1.95% Senior Notes due 2016
Debt Instrument [Line Items]
Debt instrument interest rate	1.95%	1.95%		1.95%
Debt instrument maturity date	2016	2016
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument interest rate	4.20%	4.20%		4.20%
Debt instrument maturity date	2021	2021
1.25% Senior Notes due 2017
Debt Instrument [Line Items]
Debt instrument interest rate	1.25%	1.25%		1.25%
Debt instrument maturity date	2017	2017
2.40% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	2.40%	2.40%		2.40%
Debt instrument maturity date	2022	2022
1.50% Guaranteed Notes due 2019
Debt Instrument [Line Items]
Debt instrument interest rate	1.50%	1.50%		1.50%
Debt instrument maturity date	2019	2019		2019
Guaranteed notes face amount		0.5		0.5
Long-term debt, carrying amount		0.5		0.5
Senior note floating interest rate	three-month LIBOR plus approximately 64 basis points.
1.50% Guaranteed Notes due 2019 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis points				0.64%
2.65% Senior Notes due 2016
Debt Instrument [Line Items]
Debt instrument interest rate	2.65%	2.65%		2.65%
Debt instrument maturity date	2016	2016
Effective interest rate on euro denominated debt	2.39%
Euro Medium Term Note Program
Debt Instrument [Line Items]
Guaranteed notes face amount	5.0

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Inventories

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Inventories

5. Inventories

A summary of inventories follows:

	(Stated in millions)
	2014		2013
Raw materials & field materials	$	2,666	$	2,539
Work in process		273		261
Finished goods		1,689		1,803
	$	4,628	$	4,603

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Fixed Assets

12 Months Ended

Dec. 31, 2014

Property Plant And Equipment [Abstract]

Fixed Assets

6. Fixed Assets

A summary of fixed assets follows:

	(Stated in millions)
	2014		2013
Land	$	445	$	394
Buildings & improvements		3,733		3,534
Machinery & equipment		31,937		29,332
Seismic vessels		849		1,904
		36,964		35,164
Less accumulated depreciation		21,568		20,068
	$	15,396	$	15,096

The estimated useful lives of Buildings & improvements are primarily 25 to 30 years. The estimated useful lives of Machinery & equipment are primarily 5 to 10 years. Seismic vessels are depreciated over periods ranging from 20 to 30 years.

Depreciation expense relating to fixed assets was $3.2 billion, $3.1 billion and $2.9 billion in 2014, 2013 and 2012, respectively.

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Goodwill

12 Months Ended

Dec. 31, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

8. Goodwill

The changes in the carrying amount of goodwill by reporting unit were as follows:

										(Stated in millions)
	Reservoir Characterization			Drilling			Production			Total
Balance at January 1, 2013	$	3,760		$	8,337		$	2,488			$	14,585
Acquisitions		4			3			336				343
Divestiture of business		—			—			(150	)			(150	)
Other		(27	)		(25	)		(20	)			(72	)
Balance, December 31, 2013		3,737			8,315			2,654				14,706
Acquisitions		15			271			551				837
Reallocation		83			(83	)		—				—
Other		(23	)		(15	)		(18	)			(56	)
Balance, December 31, 2014	$	3,812		$	8,488		$	3,187			$	15,487

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Derivative Instruments and Hedging Activities - Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivatives not designated as hedges
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (95)	$ (2)	$ 6
Cash Flow Hedging | Derivatives designated as hedges | Cross currency swap | Interest expense
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	(82)	15	1
Cash Flow Hedging | Derivatives not designated as hedges | Foreign exchange contracts | Cost of revenue
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	(95)	(2)	5
Cash Flow Hedging | Derivatives not designated as hedges | Commodity contracts | Cost of revenue
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income			$ 1

XML

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Interest expense included in the segment results	$ 369	$ 391	$ 340
Interest Income Excluded From Segment Information
Segment Reporting Information [Line Items]
Interest income included in the segment results	20	11
Interest Expense Excluded From Segment Information
Segment Reporting Information [Line Items]
Interest expense included in the segment results	$ 22	$ 22	$ 9

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Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ (2,554)	$ (3,888)	$ (3,557)
Other comprehensive income (loss) before reclassifications	(2,152)	1,261	(707)
Amounts reclassified from accumulated other comprehensive loss	418	375	276
Income taxes	82	(302)	100
Balance	(4,206)	(2,554)	(3,888)
Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(1,068)	(917)	(993)
Other comprehensive income (loss) before reclassifications	(463)	(151)	76
Balance	(1,531)	(1,068)	(917)
Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	29	30	(26)
Other comprehensive income (loss) before reclassifications	(238)	49	92
Amounts reclassified from accumulated other comprehensive loss	113	(50)	(36)
Balance	(96)	29	30
Pension and Other Postretirement Benefit Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(1,691)	(3,142)	(2,538)
Other comprehensive income (loss) before reclassifications	(1,285)	1,328	(1,016)
Amounts reclassified from accumulated other comprehensive loss	305	425	312
Income taxes	82	(302)	100
Balance	(2,589)	(1,691)	(3,142)
Unrealized Gain on Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	176	141
Other comprehensive income (loss) before reclassifications	(166)	35	141
Balance	$ 10	$ 176	$ 141

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Supplementary Information - Interest and Other Income, Net (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Interest income	$ 51	$ 33	$ 30
Earnings of equity method investments	240	132	142
Interest and other income, net	$ 291	$ 165	$ 172

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Derivative Instruments and Hedging Activities - Fair Values of Outstanding Derivative Instruments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivative Assets
Derivative Assets	$ 40	$ 163
Derivative Liabilities
Derivative Liabilities	255	17
Derivatives designated as hedges
Derivative Assets
Derivative Assets	35	149
Derivative Liabilities
Derivative Liabilities	227	15
Derivatives not designated as hedges
Derivative Assets
Derivative Assets	5	14
Foreign exchange contracts | Derivatives designated as hedges | Other current assets
Derivative Assets
Derivative Assets	3	98
Foreign exchange contracts | Derivatives designated as hedges | Other Assets
Derivative Assets
Derivative Assets	32	24
Foreign exchange contracts | Derivatives designated as hedges | Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	80	14
Foreign exchange contracts | Derivatives designated as hedges | Other Liabilities
Derivative Liabilities
Derivative Liabilities	105	1
Foreign exchange contracts | Derivatives not designated as hedges | Other current assets
Derivative Assets
Derivative Assets	5	10
Foreign exchange contracts | Derivatives not designated as hedges | Other Assets
Derivative Assets
Derivative Assets		4
Foreign exchange contracts | Derivatives not designated as hedges | Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	28	2
Cross currency swap | Derivatives designated as hedges | Other Assets
Derivative Assets
Derivative Assets		27
Cross currency swap | Derivatives designated as hedges | Other Liabilities
Derivative Liabilities
Derivative Liabilities	$ 42

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Pension and Other Benefit Plans - Changes in Projected Benefit Obligation, Plan Assets and Funded Status of Plans (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amounts Recognized in Balance Sheet
Postretirement Benefits	$ (1,501)	$ (670)
US Plan Assets
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	3,418	3,558
Service cost	72	80	68
Interest cost	164	150	152
Actuarial losses (gains)	627	(232)
Benefits paid	(144)	(138)
Projected benefit obligation at end of year	4,137	3,418	3,558
Change in Plan Assets
Plan assets at fair value at beginning of year	3,269	2,910
Actual return on plan assets	339	356
Company contributions	85	141
Benefits paid	(144)	(138)
Plan assets at fair value at end of year	3,549	3,269	2,910
(Unfunded Liability) / Asset	(588)	(149)
Amounts Recognized in Balance Sheet
Postretirement Benefits	(588)	(149)
Total of post retirement benefits	(588)	(149)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial (gains) losses	1,104	687
Prior service cost	66	78
Total amount recognized in accumulated other comprehensive income	1,170	765
Accumulated benefit obligation	3,805	3,158
International
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	5,981	5,798
Service cost	126	127	86
Interest cost	288	253	241
Contributions by plan participants	122	104
Actuarial losses (gains)	1,000	(168)
Currency effect	(90)	30
Benefits paid	(178)	(163)
Projected benefit obligation at end of year	7,249	5,981	5,798
Change in Plan Assets
Plan assets at fair value at beginning of year	6,246	5,120
Actual return on plan assets	502	836
Currency effect	(102)	35
Company contributions	240	314
Contributions by plan participants	122	104
Benefits paid	(178)	(163)
Plan assets at fair value at end of year	6,830	6,246	5,120
(Unfunded Liability) / Asset	(419)	265
Amounts Recognized in Balance Sheet
Postretirement Benefits	(546)	(5)
Other Assets	127	270
Total of post retirement benefits	(419)	265
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial (gains) losses	1,658	882
Prior service cost	357	418
Total amount recognized in accumulated other comprehensive income	2,015	1,300
Accumulated benefit obligation	$ 6,793	$ 5,593

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Fixed Assets (Tables)

12 Months Ended

Dec. 31, 2014

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

A summary of fixed assets follows:

	(Stated in millions)
	2014		2013
Land	$	445	$	394
Buildings & improvements		3,733		3,534
Machinery & equipment		31,937		29,332
Seismic vessels		849		1,904
		36,964		35,164
Less accumulated depreciation		21,568		20,068
	$	15,396	$	15,096

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Acquisitions - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended			6 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013	Jan. 20, 2015
Business Acquisition [Line Items]
Gain on formation of OneSubsea		$ 1,028,000,000
Acquisitions and investments, net of cash acquired	1,008,000,000	1,210,000,000	845,000,000
One Subsea
Business Acquisition [Line Items]
Purchase price				600,000,000
Ownership interest in joint venture	40.00%
Gain on formation of OneSubsea				1,028,000,000
Other Acquisitions
Business Acquisition [Line Items]
Acquisitions and investments, net of cash acquired	1,008,000,000	610,000,000	845,000,000
Shares of common stock issued in connection with acquisition	2.1
Value of common stock issued in connection with acquisition	213,000,000
Eurasia Drilling Limited | Subsequent Event
Business Acquisition [Line Items]
Ownership interest in joint venture					45.00%
Number of years to purchase remaining shares					2 years
Total cost to acquire minority ownership					$ 1,700,000,000

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Stock-based Compensation Plans

12 Months Ended

Dec. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-based Compensation Plans

13. Stock-based Compensation Plans

Schlumberger has three types of stock-based compensation programs: (i) stock options, (ii) a restricted stock, restricted stock unit and performance share unit program (collectively referred to as “restricted stock”) and (iii) a discounted stock purchase plan (“DSPP”).

Stock Options

Key employees are granted stock options under Schlumberger stock option plans. For all of the stock options granted, the exercise price equals the average of the high and low sales prices of Schlumberger stock on the date of grant; an option’s maximum term is ten years, and options generally vest in increments over five years.

The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions and resulting weighted-average fair value per share:

	2014			2013			2012
Dividend yield		1.6	%		1.7	%		1.5	%
Expected volatility		37	%		38	%		39	%
Risk free interest rate		2.2	%		1.2	%		1.5	%
Expected option life in years		7.0			7.0			6.9
Weighted-average fair value per share	$	34.20		$	23.93		$	25.26

The following table summarizes information concerning options outstanding and options exercisable as of December 31, 2014:

	(Shares stated in thousands)
	Options Outstanding						Options Exercisable
Exercise prices range	Options Outstanding		Weighted- average remaining contractual life (in years)		Weighted- average exercise price		Options Exercisable		Weighted- average exercise price
$32.45 - $67.87		6,553		3.2	$	51.50		6,295	$	51.03
$68.51 - $70.93		8,346		6.9	$	69.82		3,648	$	69.02
$72.11 - $78.31		7,553		7.2	$	72.56		1,915	$	72.47
$83.88 - $84.93		8,045		5.2	$	84.17		5,118	$	84.34
$88.61 - $114.83		8,086		8.1	$	97.78		1,566	$	95.92
		38,583		6.2	$	76.10		18,542	$	69.77

The weighted average remaining contractual life of stock options exercisable as of December 31, 2014 was 4.2 years.

The following table summarizes stock option activity during the years ended December 31, 2014, 2013 and 2012:

	(Shares stated in thousands)
	2014					2013					2012
	Shares			Weighted- average exercise price		Shares			Weighted- average exercise price		Shares			Weighted- average exercise price
Outstanding at beginning of year		41,939		$	70.33		42,059		$	67.77		40,027		$	63.84
Granted		6,105		$	99.04		6,570		$	72.16		8,664		$	72.04
Exercised		(8,269	)	$	64.19		(5,168	)	$	51.73		(4,171	)	$	39.07
Forfeited		(1,192	)	$	73.56		(1,522	)	$	70.57		(2,461	)	$	67.50
Outstanding at year-end		38,583		$	76.10		41,939		$	70.33		42,059		$	67.77

The aggregate intrinsic value of stock options outstanding as of December 31, 2014 was $459 million.

The aggregate intrinsic value of stock options exercisable as of December 31, 2014 was $306 million.

The total intrinsic value of options exercised during the years ended December 31, 2014, 2013 and 2012 was $314 million, $176 million and $142 million, respectively.

Restricted Stock

During 2013, Schlumberger began granting performance share units to certain executives.  The number of shares earned is determined at the end of each performance period, which is generally three years, based on Schlumberger’s achievement of a predefined return on capital employed (“ROCE”), as defined in the underlying performance share unit agreement.  In the event the ROCE exceeds the predefined target, shares for up to the maximum of 250% of the target award may be granted.  In the event the ROCE falls below the predefined target, a reduced number of shares may be granted.  If the ROCE falls below the threshold award performance level, no shares will be granted.  As of December 31, 2014, performance share units of 0.6 million were outstanding based on the achievement of 100% of target.

All other restricted stock awards generally vest at the end of three years.

Restricted stock awards do not pay dividends or allow voting rights during the performance period.  Accordingly, the fair value of the restricted stock award is the quoted market price of Schlumberger’s stock on the date of grant less the present value of the expected dividends not received during the vesting period.

The following table summarizes information about all restricted stock transactions:

	(Shares stated in thousands)
	2014					2013					2012
	Restricted Stock			Weighted Average Grant Date Fair Value		Restricted Stock			Weighted Average Grant Date Fair Value		Restricted Stock			Weighted Average Grant Date Fair Value
Unvested at beginning of year		4,171		$	76.01		3,566		$	73.62		2,433		$	72.25
Granted		1,341			96.08		1,949			75.65		1,668			71.09
Vested		(1,186	)		81.59		(958	)		66.98		(351	)		52.26
Forfeited		(188	)		78.68		(386	)		74.53		(184	)		73.38
Unvested at end of year		4,138		$	80.80		4,171		$	76.01		3,566		$	73.62

Discounted Stock Purchase Plan

Under the terms of the DSPP, employees can choose to have a portion of their earnings withheld, subject to certain restrictions, to purchase Schlumberger common stock. The purchase price of the stock is 92.5% of the lower of the stock price at the beginning or end of the plan period at six-month intervals.

The fair value of the employees’ purchase rights under the DSPP was estimated using the Black-Scholes model with the following assumptions and resulting weighted average fair value per share:

	2014			2013			2012
Dividend yield		1.6	%		1.7	%		1.6	%
Expected volatility		19	%		24	%		41	%
Risk free interest rate		0.1	%		0.1	%		0.2	%
Weighted average fair value per share	$	12.67		$	9.91		$	12.71

Total Stock-based Compensation Expense

The following summarizes stock-based compensation expense recognized in income:

	(Stated in millions)
	2014		2013		2012
Stock options	$	177	$	165	$	203
Restricted stock		114		110		82
DSPP		38		40		50
	$	329	$	315	$	335

At December 31, 2014, there was $514 million of total unrecognized compensation cost related to nonvested stock-based compensation arrangements, of which $238 million is expected to be recognized in 2015, $152 million in 2016, $73 million in 2017, $43 million in 2018 and $8 million in 2019.

As of December 31, 2014, approximately 33 million shares of Schlumberger common stock were available for future grants under Schlumberger’s stock-based compensation programs.

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Pension and Other Benefit Plans

12 Months Ended

Dec. 31, 2014

Compensation And Retirement Disclosure [Abstract]

Pension and Other Benefit Plans

18. Pension and Other Benefit Plans

Pension Plans

Schlumberger sponsors several defined benefit pension plans that cover substantially all US employees hired prior to October 1, 2004. The benefits are based on years of service and compensation, on a career-average pay basis.

In addition to the United States defined benefit pension plans, Schlumberger sponsors several other international defined benefit pension plans. The most significant of these international plans are the International Staff Pension Plan and the UK pension plan (collectively, the “International plans”). The International Staff Pension Plan covers certain international employees hired prior to July 1, 2014 and is based on years of service and compensation on a career-average pay basis. The UK plan covers employees hired prior to April 1, 1999, and is based on years of service and compensation, on a final salary basis.

The weighted-average assumed discount rate, compensation increases and the expected long-term rate of return on plan assets used to determine the net pension cost for the US and International plans were as follows:

	US									International
	2014			2013			2012			2014			2013			2012
Discount rate		4.85	%		4.25	%		5.50	%		4.76	%		4.38	%		4.95	%
Compensation increases		4.00	%		4.00	%		4.00	%		4.80	%		4.83	%		4.91	%
Return on plan assets		7.25	%		7.50	%		7.50	%		7.50	%		7.50	%		7.50	%

Net pension cost for 2014, 2013 and 2012 included the following components:

	(Stated in millions)
	US									International
	2014			2013			2012			2014			2013			2012
Service cost - benefits earned during the period	$	72		$	80		$	68		$	126		$	127		$	86
Interest cost on projected benefit obligation		164			150			152			288			253			241
Expected return on plan assets		(208	)		(200	)		(185	)		(450	)		(384	)		(328	)
Amortization of net loss		82			122			95			94			155			76
Amortization of prior service cost		12			12			12			120			117			120
	$	122		$	164		$	142		$	178		$	268		$	195

The weighted-average assumed discount rate and compensation increases used to determine the projected benefit obligations for the US and International plans were as follows:

	US						International
	2014			2013			2014			2013
Discount rate		4.15	%		4.85	%		4.07	%		4.76	%
Compensation increases		4.00	%		4.00	%		4.79	%		4.80	%

The changes in the projected benefit obligation, plan assets and funded status of the plans were as follows:

	(Stated in millions)
	US						International
	2014			2013			2014			2013
Change in Projected Benefit Obligations
Projected benefit obligation at beginning of year	$	3,418		$	3,558		$	5,981		$	5,798
Service cost		72			80			126			127
Interest cost		164			150			288			253
Contributions by plan participants		—			—			122			104
Actuarial losses (gains)		627			(232	)		1,000			(168	)
Currency effect		—			—			(90	)		30
Benefits paid		(144	)		(138	)		(178	)		(163	)
Projected benefit obligation at end of year	$	4,137		$	3,418		$	7,249		$	5,981
Change in Plan Assets
Plan assets at fair value at beginning of year	$	3,269		$	2,910		$	6,246		$	5,120
Actual return on plan assets		339			356			502			836
Currency effect		—			—			(102	)		35
Company contributions		85			141			240			314
Contributions by plan participants		—			—			122			104
Benefits paid		(144	)		(138	)		(178	)		(163	)
Plan assets at fair value at end of year	$	3,549		$	3,269		$	6,830		$	6,246
(Unfunded Liability) / Asset	$	(588	)	$	(149	)	$	(419	)	$	265
Amounts Recognized in Balance Sheet
Postretirement Benefits	$	(588	)	$	(149	)	$	(546	)	$	(5	)
Other Assets		—			—			127			270
	$	(588	)	$	(149	)	$	(419	)	$	265
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	1,104		$	687		$	1,658		$	882
Prior service cost		66			78			357			418
	$	1,170		$	765		$	2,015		$	1,300
Accumulated benefit obligation	$	3,805		$	3,158		$	6,793		$	5,593

The unfunded liability represents the difference between the plan assets and the projected benefit obligation (“PBO”). The PBO represents the actuarial present value of benefits based on employee service and compensation and includes an assumption about future compensation levels. The accumulated benefit obligation represents the actuarial present value of benefits based on employee service and compensation, but does not include an assumption about future compensation levels.

The weighted-average allocation of plan assets and the target allocations by asset category are as follows:

	US									International
	Target			2014			2013			Target			2014			2013
Equity securities		37 - 56	%		48	%		50	%		50 - 71	%		58	%		60	%
Debt securities		35 - 62			42			40			20 - 35			32			31
Cash and cash equivalents		0  -  3			2			2			0  -  5			4			3
Alternative investments		0  -  8			8			8			0 - 25			6			6
		100	%		100	%		100	%		100	%		100	%		100	%

Asset performance is monitored frequently with an overall expectation that plan assets will meet or exceed the weighted index of its target asset allocation and component benchmark over rolling five-year periods.

The expected long-term rate of return on assets assumptions reflect the average rate of earnings expected on funds invested or to be invested. The assumptions have been determined based on expectations regarding future rates of return for the portfolio considering the asset allocation and related historical rates of return. The appropriateness of the assumptions is reviewed annually.

The fair value of Schlumberger’s pension plan assets at December 31, 2014 and 2013, by asset category, is presented below and was determined based on valuation techniques categorized as follows:

● Level One: The use of quoted prices in active markets for identical instruments.

● Level Two: The use of quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or other inputs that are observable in the market or can be corroborated by observable market data.

● Level Three: The use of significant unobservable inputs that typically require the use of management’s estimates of assumptions that market participants would use in pricing.

	(Stated in millions)
	US Plan Assets
	2014								2013
	Total		Level One		Level Two		Level Three		Total		Level One		Level Two		Level Three
Asset Category:
Cash and Cash Equivalents	$	59	$	40	$	19	$	—	$	77	$	24	$	53	$	—
Equity Securities:
US (a)		1,149		622		527				1,068		625		443
International (b)		552		433		119				572		454		118
Debt Securities:
Corporate bonds (c)		654				654				548				548
Government and government-related debt securities (d)		735		175		560				639		161		478
Collateralized mortgage obligations and mortgage backed securities (e)		107				107				99				99
Alternative Investments:
Private equity (f)		210						210		204						204
Real estate (g)		83						83		62						62
Total	$	3,549	$	1,270	$	1,986	$	293	$	3,269	$	1,264	$	1,739	$	266

	(Stated in millions)
	International Plan Assets
	2014								2013
	Total		Level One		Level Two		Level Three		Total		Level One		Level Two		Level Three
Asset Category:
Cash and Cash Equivalents	$	264	$	174	$	90	$	—	$	267	$	127	$	140	$	—
Equity Securities:
US (a)		2,432		1,757		675				2,175		1,603		572
International (b)		1,534		1,047		487				1,566		990		576
Debt Securities:
Corporate bonds (c)		780				780				576				576
Government and government-related debt securities (d)		1,181		8		1,173				997		6		991
Collateralized mortgage obligations and mortgage backed securities (e)		256				256				301				301
Alternative Investments:
Private equity (f)		246						246		206						206
Real estate (g)		49						49		60						60
Other		88						88		98						98
Total	$	6,830	$	2,986	$	3,461	$	383	$	6,246	$	2,726	$	3,156	$	364

^(a) US equities include companies that are well diversified by industry sector and equity style (i.e., growth and value strategies). Active and passive management strategies are employed. Investments are primarily in large capitalization stocks and, to a lesser extent, mid- and small-cap stocks.

^(b) International equities are invested in companies that are traded on exchanges outside the US and are well diversified by industry sector, country and equity style. Active and passive strategies are employed. The vast majority of the investments are made in companies in developed markets with a small percentage in emerging markets.

^(c) Corporate bonds consist primarily of investment grade bonds from diversified industries.

^(d) Government and government-related debt securities are comprised primarily of inflation-protected US treasuries and, to a lesser extent, other government-related securities.

^(e) Collateralized mortgage obligations and mortgage backed-securities are debt obligations that represent claims to the cash flows from pools of mortgage loans which are purchased from banks, mortgage companies, and other originators and then assembled into pools by governmental, quasi-governmental and private entities.

^(f) Private equity includes investments in several fund of funds limited partnerships.

^(g) Real estate primarily includes investments in real estate limited partnerships, concentrated in commercial real estate.

Schlumberger’s funding policy is to annually contribute amounts that are based upon a number of factors including the actuarial accrued liability, amounts that are deductible for income tax purposes, legal funding requirements and available cash flow. Schlumberger currently anticipates contributing approximately $400 million to its postretirement benefit plans in 2015, subject to market and business conditions.

Postretirement Benefits Other Than Pensions

Schlumberger provides certain healthcare benefits to certain former US employees who have retired.  During the fourth quarter of 2014 Schlumberger announced that, effective April 1, 2015, it will change the way it provides healthcare coverage to certain retirees who are age 65 and over.  Under the amended plan, these retirees will transfer to individual coverage under the Medicare Exchange.  Schlumberger will subsidize the cost of the program by providing these retirees with a Health Reimbursement Account.  The annual subsidy may be increased based on medical cost inflation, but it will not be increased more than 5% in any given year.  The benefit obligation relating to these retirees represents approximately 66% of Schlumberger’s total accumulated benefit obligation for postretirement benefits other than pensions as of December 31, 2014.

The actuarial assumptions used to determine the accumulated postretirement benefit obligation and net periodic benefit cost for the US postretirement medical plan were as follows:

	Benefit Obligation at December 31,						Net Periodic Benefit Cost for the year
	2014			2013			2014			2013			2012
Discount rate		4.15	%		4.85	%		4.85	%		4.25	%		5.00	%
Return on plan assets		—			—			7.00	%		7.00	%		7.00	%
Current medical cost trend rate		7.00	%		7.25	%		7.25	%		7.50	%		8.00	%
Ultimate medical cost trend rate		5.00	%		5.00	%		5.00	%		5.00	%		5.00	%
Year that the rate reaches the ultimate trend rate		2023			2023			2023			2023			2018

The net periodic benefit cost for the US postretirement medical plan included the following components:

	(Stated in millions)
	2014			2013			2012
Service cost — benefits earned during the period	$	43		$	48		$	29
Interest cost on projected benefit obligation		60			56			58
Expected return on plan assets		(45	)		(37	)		(30	)
Amortization of net loss		1			23			16
Amortization of prior service credit		(4	)		(4	)		(7	)
	$	55		$	86		$	66

The changes in the accumulated postretirement benefit obligation, plan assets and funded status were as follows:

	(Stated in millions)
	2014			2013
Change in Accumulated Postretirement Benefit Obligation
Benefit obligation at beginning of year	$	1,247		$	1,410
Service cost		43			48
Interest cost		60			56
Contributions by plan participants		6			6
Actuarial losses (gains)		210			(232	)
Benefits paid		(46	)		(41	)
Plan amendments		(299	)		—
Benefit obligation at end of year	$	1,221		$	1,247
Change in Plan Assets
Plan assets at fair value at beginning of year	$	731		$	576
Company contributions		65			83
Contributions by plan participants		6			6
Benefits paid		(46	)		(41	)
Actual return on plan assets		98			107
Plan assets at fair value at end of year	$	854		$	731
Unfunded Liability	$	(367	)	$	(516	)
Amounts Recognized in Accumulated Other Comprehensive Loss
Actuarial losses	$	242		$	87
Prior service credit		(307	)		(12	)
	$	(65	)	$	75

The unfunded liability is included in Postretirement Benefits in the Consolidated Balance Sheet.

The assets of the US postretirement medical plan are invested 60% in equity securities and 40% in debt securities at December 31, 2014. The fair value of these assets was primarily determined based on Level Two valuation techniques.

Assumed health care cost trend rates have a significant effect on the amounts reported for the US postretirement medical plan. A one percentage point change in assumed health care cost trend rates would have the following effects:

	(Stated in millions)
	One percentage point increase		One percentage point decrease
Effect on total service and interest cost components	$	42	$	(17	)
Effect on accumulated postretirement benefit obligation	$	37	$	(33	)

Other Information

The expected benefits to be paid under the US and International pension plans as well as the postretirement medical plan were as follows:

	(Stated in millions)
	Pension Benefits				Postretirement Medical Plan
	US		International
2015	$	155	$	222	$	46
2016		162		240		49
2017		171		256		52
2018		181		274		56
2019		190		290		59
2020 - 2024		1,112		1,675		344

Included in Accumulated other comprehensive loss at December 31, 2014 are non-cash pretax charges which have not yet been recognized in net periodic benefit cost. The estimated portion of each component of Accumulated other comprehensive loss which is expected to be recognized as a component of net periodic benefit cost during the year ending December 31, 2015 is as follows:

	(Stated in millions)
	Pension Plans		Postretirement Medical Plan
Net actuarial losses	$	274	$	17
Prior service cost (credit)	$	133	$	(32	)

In addition to providing defined pension benefits and a postretirement medical plan, Schlumberger and its subsidiaries have other deferred benefit programs, primarily profit sharing and defined contribution pension plans. Expenses for these programs were $749 million, $671 million and $620 million in 2014, 2013 and 2012, respectively.

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Pension and Other Benefit Plans - Fair Value of Schlumberger's Pension Plan Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
US Plan Assets
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	$ 3,549	$ 3,269	$ 2,910
US Plan Assets | Cash and cash equivalents
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	59	77
US Plan Assets | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	552	572
US Plan Assets | Corporate bonds
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	654	548
US Plan Assets | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	735	639
US Plan Assets | Collateralized mortgage obligations and mortgage backed securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	107	99
US Plan Assets | Private equity
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	210	204
US Plan Assets | Real estate
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	83	62
US Plan Assets | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,149	1,068
US Plan Assets | Level One
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,270	1,264
US Plan Assets | Level One | Cash and cash equivalents
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	40	24
US Plan Assets | Level One | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	433	454
US Plan Assets | Level One | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	175	161
US Plan Assets | Level One | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	622	625
US Plan Assets | Level Two
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,986	1,739
US Plan Assets | Level Two | Cash and cash equivalents
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	19	53
US Plan Assets | Level Two | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	119	118
US Plan Assets | Level Two | Corporate bonds
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	654	548
US Plan Assets | Level Two | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	560	478
US Plan Assets | Level Two | Collateralized mortgage obligations and mortgage backed securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	107	99
US Plan Assets | Level Two | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	527	443
US Plan Assets | Level Three
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	293	266
US Plan Assets | Level Three | Private equity
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	210	204
US Plan Assets | Level Three | Real estate
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	83	62
International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	6,830	6,246	5,120
International | Cash and cash equivalents
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	264	267
International | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,534	1,566
International | Corporate bonds
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	780	576
International | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,181	997
International | Collateralized mortgage obligations and mortgage backed securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	256	301
International | Private equity
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	246	206
International | Real estate
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	49	60
International | Other
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	88	98
International | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	2,432	2,175
International | Level One
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	2,986	2,726
International | Level One | Cash and cash equivalents
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	174	127
International | Level One | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,047	990
International | Level One | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	8	6
International | Level One | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,757	1,603
International | Level Two
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	3,461	3,156
International | Level Two | Cash and cash equivalents
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	90	140
International | Level Two | International
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	487	576
International | Level Two | Corporate bonds
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	780	576
International | Level Two | Government and government-related debt securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	1,173	991
International | Level Two | Collateralized mortgage obligations and mortgage backed securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	256	301
International | Level Two | United States | Equity securities
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	675	572
International | Level Three
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	383	364
International | Level Three | Private equity
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	246	206
International | Level Three | Real estate
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	49	60
International | Level Three | Other
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Plan assets at fair value	$ 88	$ 98

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Charges and Credits - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			3 Months Ended					3 Months Ended		12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Mar. 31, 2013 Other Restructuring USD ($)	Dec. 31, 2014 Venezuela Bolivar Official Currency Exchange Rate To Dollar VEF	Mar. 31, 2013 Venezuela Bolivar Official Currency Exchange Rate To Dollar VEF	Dec. 31, 2012 Venezuela Bolivar Official Currency Exchange Rate To Dollar VEF	Dec. 31, 2014 Venezuela Bolivar Official Currency Exchange Rate To Dollar SICAD I VEF	Dec. 31, 2014 Venezuela Bolivar Official Currency Exchange Rate To Dollar SICAD II USD ($)	Dec. 31, 2014 Venezuela Bolivar Official Currency Exchange Rate To Dollar SICAD II VEF	Dec. 31, 2013 Provision For Accounts Receivable Cost Of Revenue USD ($)	Dec. 31, 2013 Gain On Formation Of One Subsea Gain On Formation Of One Subsea Joint Venture USD ($)	Dec. 31, 2013 Impairment And Other Impairment Of Equity Method Investments USD ($)	Dec. 31, 2013 Impairment And Other Impairment Of Equity Method Investments Drilling Related Technology USD ($)	Dec. 31, 2013 Impairment And Other Impairment Of Equity Method Investments Contract Drilling USD ($)	Dec. 31, 2014 Impairment And Other Severance and other USD ($)	Dec. 31, 2012 Impairment And Other Severance and other USD ($)	Dec. 31, 2014 Certain intangible assets USD ($)	Dec. 31, 2012 Merger And Integration Merger-related integration costs USD ($)	Dec. 31, 2014 Explorer-class vessels USD ($)	Dec. 31, 2014 Explorer-class vessels Eastern Echo Holdings Plc. USD ($) Vessel	Dec. 31, 2014 Other seismic assets Lease termination costs USD ($)
Charges And Credits [Line Items]
Vessel termination, description		Three previous-generation acquisition vessels with lower towing capacity and higher operating costs will be converted to source vessels, allowing for the termination of two third-party source vessel leases and the retirement of two owned source vessels.
Impairment charge, Pretax	$ 199																		$ 85		$ 590	$ 590
Number of vessels acquired																						6
Restructuring, other pretax charge																							131
Exchange rate						6.3	6.3	4.3
Exchange rate, approximated									11		50
Charges, Pretax	296
Devaluation charge					92					472
Foreign currency transactions, description		Going forward, this change will result in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income. For example, if Schlumberger had applied an exchange rate of 50 Venezuelan Bolivares fuertes to the US dollar throughout 2014, it would have reduced Schlumberger earnings by approximately $0.08 per share.
Charges and credits, Pretax		1,773	(420)	161								152	(1,028)	364	222	142
Charges and credits, Net			(469)									122	(1,028)	345
Charges, Pretax		$ 1,773		$ 161													$ 296	$ 33		$ 128

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Discontinued Operations - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Jun. 30, 2012
Disclosure - Discontinued Operations - Additional Information (Detail) [Line Items]
Proceed from sale of business		$ 2
Gain on divestiture, net of tax		28
Percentage of Schlumberger completed the sale of interest in CE Franklin Ltd. to NOV	56.00%
Wilson Distribution Segment
Disclosure - Discontinued Operations - Additional Information (Detail) [Line Items]
Proceed from sale of business			906
Pre tax gain			137
Gain on divestiture, net of tax			16
CE Franklin Ltd.
Disclosure - Discontinued Operations - Additional Information (Detail) [Line Items]
Proceed from sale of business	122
Pre tax gain	30
Gain on divestiture, net of tax	12

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Stock-based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Weighted Average Assumptions Used in Estimating Fair Value of Stock Options

The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions and resulting weighted-average fair value per share:

	2014			2013			2012
Dividend yield		1.6	%		1.7	%		1.5	%
Expected volatility		37	%		38	%		39	%
Risk free interest rate		2.2	%		1.2	%		1.5	%
Expected option life in years		7.0			7.0			6.9
Weighted-average fair value per share	$	34.20		$	23.93		$	25.26

Options Outstanding and Option Exercisable

The following table summarizes information concerning options outstanding and options exercisable as of December 31, 2014:

	(Shares stated in thousands)
	Options Outstanding						Options Exercisable
Exercise prices range	Options Outstanding		Weighted- average remaining contractual life (in years)		Weighted- average exercise price		Options Exercisable		Weighted- average exercise price
$32.45 - $67.87		6,553		3.2	$	51.50		6,295	$	51.03
$68.51 - $70.93		8,346		6.9	$	69.82		3,648	$	69.02
$72.11 - $78.31		7,553		7.2	$	72.56		1,915	$	72.47
$83.88 - $84.93		8,045		5.2	$	84.17		5,118	$	84.34
$88.61 - $114.83		8,086		8.1	$	97.78		1,566	$	95.92
		38,583		6.2	$	76.10		18,542	$	69.77

Summary of Stock Option Activity

The following table summarizes stock option activity during the years ended December 31, 2014, 2013 and 2012:

	(Shares stated in thousands)
	2014					2013					2012
	Shares			Weighted- average exercise price		Shares			Weighted- average exercise price		Shares			Weighted- average exercise price
Outstanding at beginning of year		41,939		$	70.33		42,059		$	67.77		40,027		$	63.84
Granted		6,105		$	99.04		6,570		$	72.16		8,664		$	72.04
Exercised		(8,269	)	$	64.19		(5,168	)	$	51.73		(4,171	)	$	39.07
Forfeited		(1,192	)	$	73.56		(1,522	)	$	70.57		(2,461	)	$	67.50
Outstanding at year-end		38,583		$	76.10		41,939		$	70.33		42,059		$	67.77

Restricted Stock Transactions

The following table summarizes information about all restricted stock transactions:

	(Shares stated in thousands)
	2014					2013					2012
	Restricted Stock			Weighted Average Grant Date Fair Value		Restricted Stock			Weighted Average Grant Date Fair Value		Restricted Stock			Weighted Average Grant Date Fair Value
Unvested at beginning of year		4,171		$	76.01		3,566		$	73.62		2,433		$	72.25
Granted		1,341			96.08		1,949			75.65		1,668			71.09
Vested		(1,186	)		81.59		(958	)		66.98		(351	)		52.26
Forfeited		(188	)		78.68		(386	)		74.53		(184	)		73.38
Unvested at end of year		4,138		$	80.80		4,171		$	76.01		3,566		$	73.62

Assumptions Used in Estimating Fair Value of Purchase Rights under Discounted Stock Purchase Plan

The fair value of the employees’ purchase rights under the DSPP was estimated using the Black-Scholes model with the following assumptions and resulting weighted average fair value per share:

	2014			2013			2012
Dividend yield		1.6	%		1.7	%		1.6	%
Expected volatility		19	%		24	%		41	%
Risk free interest rate		0.1	%		0.1	%		0.2	%
Weighted average fair value per share	$	12.67		$	9.91		$	12.71

Stock-Based Compensation Expense Recognized in Income

The following summarizes stock-based compensation expense recognized in income:

	(Stated in millions)
	2014		2013		2012
Stock options	$	177	$	165	$	203
Restricted stock		114		110		82
DSPP		38		40		50
	$	329	$	315	$	335

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CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on receivable	$ 275	$ 384	$ 202	$ 177

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Segment Information - Fixed Assets Less Accumulated Depreciation by Geographic Area (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Fixed Assets less accumulated depreciation	$ 15,396		$ 15,096		$ 14,780
Operating Segments | North America
Segment Reporting Information [Line Items]
Fixed Assets	4,885		4,858		4,868
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Fixed Assets	1,969		1,889		1,788
Operating Segments | Europe
Segment Reporting Information [Line Items]
Fixed Assets	3,640		3,452		3,414
Operating Segments | Middle East & Asia
Segment Reporting Information [Line Items]
Fixed Assets	3,446		2,991		2,908
Unallocated
Segment Reporting Information [Line Items]
Fixed Assets	$ 1,456	[1]	$ 1,906	[1]	$ 1,802	[1]

[1] Represents seismic vessels, including the related on-board equipment, which frequently transition between geographic areas.

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Summary of Accounting Policies

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Accounting Policies

2. Summary of Accounting Policies

The Consolidated Financial Statements of Schlumberger have been prepared in accordance with accounting principles generally accepted in the United States of America.

Principles of Consolidation

The accompanying Consolidated Financial Statements include the accounts of Schlumberger, its wholly-owned subsidiaries, and other subsidiaries over which it exercises a controlling financial interest. All significant intercompany transactions and balances have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, Schlumberger evaluates its estimates, including those related to collectibility of accounts receivable; recoverability of fixed assets, goodwill, intangible assets, Schlumberger Production Management investments and investments in affiliates; income taxes; multiclient seismic data; contingencies and actuarial assumptions for employee benefit plans. Schlumberger bases its estimates on historical experience and other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Revenue Recognition

Schlumberger recognizes revenue based upon purchase orders, contracts or other persuasive evidence of an arrangement with the customer that include fixed or determinable prices provided that collectibility is reasonably assured. Revenue is recognized for services when they are rendered. Revenue is recognized for products upon delivery and when the customer assumes the risks and rewards of ownership.

Revenue from seismic contract services performed on a dayrate basis is recognized as the service is performed. Revenue from other services, including pre-funded multiclient surveys, is recognized as the seismic data is acquired and/or processed on a proportionate basis as work is performed. This method requires revenue to be recognized based upon quantifiable measures of progress, such as square kilometers acquired. Multiclient data surveys are licensed or sold to customers on a non-transferable basis. Revenue from sales of completed multiclient data surveys is recognized upon obtaining a signed licensing agreement and providing customers with access to such data.

Revenue is occasionally generated from contractual arrangements that include multiple deliverables. Revenue from these arrangements is recognized as each item is delivered based on their relative fair value, provided that the delivered items have stand-alone value to the customer.

Revenue derived from the sale of licenses of Schlumberger software may include installation, maintenance, consulting and training services. If services are not essential to the functionality of the software, the revenue for each element of the contract is recognized separately based on its respective vendor specific objective evidence of fair value when all of the following conditions are met: a signed contract is obtained, delivery has occurred, the fee is fixed or determinable and collectibility is probable.

Translation of Non-United States Currencies

The functional currency of Schlumberger is primarily the US dollar. Assets and liabilities recorded in functional currencies other than US dollars are translated at period-end exchange rates. The resulting adjustments are charged or credited directly to the Equity section of the Consolidated Balance Sheet. Revenue and expenses are translated at the weighted-average exchange rates for the period. Realized and unrealized transaction gains and losses are included in income in the period in which they occur. Transaction losses of $67 million, $24 million and $37 million, net of hedging activities, were recognized in 2014, 2013 and 2012, respectively.

Short-term and Fixed Income Investments

The Consolidated Balance Sheet reflects the Schlumberger investment portfolio separated between current and long term, based on maturity. Both Short-term investments and Fixed Income Investments, held to maturity are comprised primarily of money market funds, time deposits, certificates of deposit, commercial paper, bonds and notes, substantially all of which are denominated in US dollars. Under normal circumstances Schlumberger intends to hold such investments until maturity, with the exception of $194 million of investments at December 31, 2013 that are considered trading. Short-term investments designated as trading are stated at fair value, which is estimated using quoted market prices for those or similar investments. All other investments are stated at cost plus accrued interest, which approximates market. The unrealized gains/losses on investments designated as trading were not significant at December 31, 2013.

For purposes of the Consolidated Statement of Cash Flows, Schlumberger does not consider Short-term investments to be cash equivalents.

Fixed Income Investments, held to maturity at December 31, 2014 of $442 million mature as follows: $49 million in 2016, $91 million in 2017, $298 million in 2018, $3 million in 2019 and $1 million in 2020.

Inventories

Inventories are stated at average cost or at market, whichever is lower. Costs included in Inventories consist of materials, direct labor and manufacturing overhead.

Investments in Affiliated Companies

Investments in companies in which Schlumberger does not have a controlling financial interest, but over which it has significant influence are accounted for using the equity method. Schlumberger’s share of the after-tax earnings of equity method investees is included in Interest and other income. Investments in privately held companies in which Schlumberger does not have the ability to exercise significant influence are accounted for using the cost method. Investments in publicly traded companies in which Schlumberger does not have significant influence are accounted for as available-for-sale marketable securities. These marketable securities are reported at fair value, based on quoted market prices, with unrealized gains and losses reported as a component of Accumulated other comprehensive loss. The fair value of these marketable securities was $91 million and $257 million at December 31, 2014 and 2013, respectively. The cost basis of these marketable securities was $81 million at both December 31, 2014 and 2013.

Equity and cost method investments as well as investments in publicly traded companies are classified as Investments in Affiliated Companies in the Consolidated Balance Sheet.

Fixed Assets and Depreciation

Fixed assets are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Fixed assets include the manufacturing cost of oilfield technical equipment manufactured or assembled by subsidiaries of Schlumberger. Expenditures for replacements and improvements are capitalized. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the balance sheet and the net amount, less proceeds from disposal, is charged or credited to income.

Multiclient Seismic Data

The multiclient library consists of completed and in-process seismic surveys that are licensed on a nonexclusive basis. Schlumberger capitalizes costs directly incurred in acquiring and processing the multiclient seismic data. Such costs are charged to Cost of revenue based on the percentage of the total costs to the estimated total revenue that Schlumberger expects to receive from the sales of such data. However, under no circumstance will an individual survey carry a net book value greater than a 4-year, straight-line amortized value.

The carrying value of the multiclient library is reviewed for impairment annually as well as when an event or change in circumstance indicating impairment may have occurred. Adjustments to the carrying value are recorded when it is determined that estimated future cash flows, which involves significant judgment on the part of Schlumberger, would not be sufficient to recover the carrying value of the surveys. Significant adverse changes in Schlumberger’s estimated future cash flows could result in impairment charges in a future period.

Schlumberger Production Management

Schlumberger Production Management (SPM) projects are focused on developing and co-managing the production of Schlumberger customers’ assets under long-term agreements.  Schlumberger will invest its own services, products and in some cases cash, into the field development activities and operations.  Although in certain arrangements Schlumberger is paid for a portion of the services or products it provides, generally Schlumberger will not be paid at the time of providing its services or upon delivery of its products. Instead, Schlumberger is compensated based upon cash flow generated or on a fee-per-barrel basis for any incremental production Schlumberger helps deliver above a mutually agreed baseline.

Schlumberger capitalizes its cash investments in a project as well as the direct costs associated with providing services or products for which Schlumberger will be compensated if incremental production is achieved.  Revenue is recognized as the incremental production is achieved. These capitalized investments are amortized to the Consolidated Statement of Income as incremental oil production is achieved based on the units of production method, whereby each incremental unit produced is assigned a pro-rata portion of the unamortized costs based on estimated total incremental production, resulting in a matching of revenue with the applicable costs.

The unamortized portion of Schlumberger’s investments in SPM projects was approximately $1.411 billion and $1.154 billion at December 31, 2014 and 2013, respectively.  These amounts are included within Other Assets in Schlumberger’s Consolidated Balance Sheet.  In 2014, Schlumberger revised its Consolidated Statement of Cash Flows to present certain cash outflows relating to SPM activities as a separate line item within investing activities, referred to as SPM investments. Schlumberger historically presented such cash outflows as an operating activity. This change was not material to prior periods.

Goodwill, Intangible Assets and Long-lived Assets

Schlumberger records the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired and liabilities assumed as goodwill. The goodwill relating to each of Schlumberger’s reporting units is tested for impairment annually as well as when an event, or change in circumstances, indicates an impairment may have occurred.

Under generally accepted accounting principles, Schlumberger has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of one of its reporting units is greater than its carrying amount. If, after assessing the totality of events or circumstances, Schlumberger determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then there is no need to perform any further testing. However, if Schlumberger concludes otherwise, then it is required to perform the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value.

Schlumberger has the option to bypass the qualitative assessment for any reporting unit in any period and proceed directly to performing the first step of the two-step goodwill impairment test.

For purposes of performing the impairment test for goodwill, Schlumberger’s reporting units are its three Groups: Reservoir Characterization, Drilling and Production. Schlumberger elected to perform the qualitative assessment described above for purposes of its annual goodwill impairment test in 2014. Based on this assessment, Schlumberger concluded that it was more likely than not that the fair value of each of its reporting units was greater than its carrying amount. Accordingly, no further testing was required.

Long-lived assets, including fixed assets, intangible assets and investments in SPM projects, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In reviewing for impairment, the carrying value of such assets is compared to the estimated undiscounted future cash flows expected from the use of the assets and their eventual disposition. If such cash flows are not sufficient to support the asset’s recorded value, an impairment charge is recognized to reduce the carrying value of the long-lived asset to its estimated fair value. The determination of future cash flows as well as the estimated fair value of long-lived assets involve significant estimates on the part of management. If there is a material change in economic conditions or other circumstances influencing the estimate of future cash flows or fair value, Schlumberger could be required to recognize impairment charges in the future.

Intangible assets consist primarily of customer relationships, technology/technical know-how and tradenames acquired in business combinations. Customer relationships are generally amortized over periods ranging from 15 to 28 years, acquired technology/technical know-how are generally amortized over periods ranging from 10 to 18 years, and tradenames are generally amortized over periods ranging from 15 to 30 years.

Taxes on Income

Schlumberger computes taxes on income in accordance with the tax rules and regulations of the many taxing authorities where the income is earned. The income tax rates imposed by these taxing authorities vary substantially. Taxable income may differ from pretax income for financial accounting purposes. To the extent that differences are due to revenue or expense items reported in one period for tax purposes and in another period for financial accounting purposes, an appropriate provision for deferred income taxes is made. Any effect of changes in income tax rates or tax laws are included in the provision for income taxes in the period of enactment. When it is more likely than not that a portion or all of the deferred tax asset will not be realized in the future, Schlumberger provides a corresponding valuation allowance against deferred tax assets.

Schlumberger’s tax filings are subject to regular audit by the tax authorities in most of the jurisdictions in which it conducts business. These audits may result in assessments for additional taxes which are resolved with the authorities or, potentially, through the courts. Schlumberger recognizes the impact of a tax position in its financial statements if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Tax liabilities are recorded based on estimates of additional taxes which will be due upon the conclusion of these audits. Estimates of these tax liabilities are made based upon prior experience and are updated in light of changes in facts and circumstances. However, due to the uncertain and complex application of tax regulations, the ultimate resolution of audits may result in liabilities which could be materially different from these estimates. In such an event, Schlumberger will record additional tax expense or tax benefit in the year in which such resolution occurs.

Schlumberger generally does not provide income taxes relating to undistributed earnings, as the earnings either would not be taxable when remitted or are considered to be indefinitely reinvested.

Concentration of Credit Risk

Schlumberger’s assets that are exposed to concentrations of credit risk consist primarily of cash, short-term investments, fixed income investments held to maturity, receivables from clients and derivative financial instruments. Schlumberger places its cash, short-term investments and fixed income investments held to maturity with financial institutions and corporations, and limits the amount of credit exposure with any one of them. Schlumberger regularly evaluates the creditworthiness of the issuers in which it invests. Accounts receivable are spread over many countries and customers. Schlumberger maintains an allowance for uncollectible accounts receivable based on expected collectibility and performs ongoing credit evaluations of its customers’ financial condition. By using derivative financial instruments to hedge certain exposures, Schlumberger exposes itself to some credit risk. Schlumberger minimizes this credit risk by entering into transactions with high-quality counterparties, limiting the exposure to each counterparty and monitoring the financial condition of its counterparties.

Research & Engineering

All research and engineering expenditures are expensed as incurred.

Earnings per Share

Basic earnings per share of Schlumberger from continuing operations is calculated by dividing income from continuing operations attributable to Schlumberger by the weighted average number of common shares outstanding during the year. Diluted earnings per share is calculated by dividing income from continuing operations attributable to Schlumberger by the sum of (i) unvested restricted stock units and (ii) the weighted average number of common shares outstanding assuming dilution. The weighted average number of common shares outstanding assuming dilution assumes that all in-the-money stock options are exercised at the beginning of the period and the related proceeds are used by Schlumberger to purchase shares of its common stock at the average market price for the period.

The following is a reconciliation from basic to diluted earnings per share from continuing operations of Schlumberger for each of the last three years:

	(Stated in millions except per share amounts)
	Schlumberger Income from Continuing Operations		Weighted Average Shares Outstanding		Earnings Per Share from Continuing Operations
2014:
Basic	$	5,643		1,295	$	4.36
Assumed exercise of stock options		—		9
Unvested restricted stock		—		4
Diluted	$	5,643		1,308	$	4.31
2013:
Basic	$	6,801		1,323	$	5.14
Assumed exercise of stock options		—		6
Unvested restricted stock		—		4
Diluted	$	6,801		1,333	$	5.10
2012:
Basic	$	5,230		1,330	$	3.93
Assumed exercise of stock options		—		5
Unvested restricted stock		—		4
Diluted	$	5,230		1,339	$	3.91

Employee stock options to purchase 5 million, 12 million and 21 million shares of common stock at December 31, 2014, 2013 and 2012, respectively, were outstanding but not included in the computation of diluted earnings per share because the option exercise price was greater than the average market price of the common stock, and therefore the effect on diluted earnings per share would have been anti-dilutive.

Recently Issued Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. This ASU amends the existing accounting standards for revenue recognition and is based on the principlethat revenue should be recognized to depict the transfer of goods or services to a customer at an amount that reflects the considerationa company expects to receive in exchange for those goods or services. Schlumberger is required to adopt this ASU on January 1,2017 and does not expect this ASU to have a material impact on its consolidated financial statements.

In April 2014, the FASB issued ASU 2014-08, Presentation of Financial Statements and Property, Plant, and Equipment – Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which amends the definition of a discontinued operation by raising the threshold for a disposal to qualify as a discontinued operation.  The threshold under the ASU is defined as a strategic shift that has, or will have, a major effect on an entity’s operations and financial results such as a disposal of a major geographical area or a major line of business.  Schlumberger adopted this ASU, on a prospective basis, effective January 1, 2015.

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Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 344	$ 330	$ 331
Estimated amortization charged to income, 2015	349
Estimated amortization charged to income, 2016	338
Estimated amortization charged to income, 2017	329
Estimated amortization charged to income, 2018	319
Estimated amortization charged to income, 2019	$ 307

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Leases and Lease Commitments - Future Minimum Rental Commitments Under Noncancelable Operating Leases (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Leases [Abstract]
2015	$ 330
2016	259
2017	197
2018	156
2019	134
Thereafter	554
Total	$ 1,630

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Discontinued Operations - Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Discontinued Operations And Disposal Groups [Abstract]
Revenue			$ 102	$ 1,399
(Loss) income before taxes		(205)	(63)	274
Tax expense			(6)	(37)
Net income attributable to noncontrolling interests				(5)
Gain on divestiture, net of tax				28
Income (loss) from discontinued operations	$ 205	$ (205)	$ (69)	$ 260

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Stock-based Compensation Plans - Options Outstanding and Option Exercisable (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Options Outstanding	38,583
Weighted-average remaining contractual life (in years)	6 years 2 months 12 days
Weighted- average exercise price	$ 76.10
Options Exercisable	18,542
Weighted-average exercise price	$ 69.77
Exercise prices range $32.45 - $67.87
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 32.45
Exercise prices maximum range	$ 67.87
Options Outstanding	6,553
Weighted-average remaining contractual life (in years)	3 years 2 months 12 days
Weighted- average exercise price	$ 51.50
Options Exercisable	6,295
Weighted-average exercise price	$ 51.03
Exercise prices range $68.51 - $70.93
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 68.51
Exercise prices maximum range	$ 70.93
Options Outstanding	8,346
Weighted-average remaining contractual life (in years)	6 years 10 months 24 days
Weighted- average exercise price	$ 69.82
Options Exercisable	3,648
Weighted-average exercise price	$ 69.02
Exercise prices range $72.11 - $78.31
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 72.11
Exercise prices maximum range	$ 78.31
Options Outstanding	7,553
Weighted-average remaining contractual life (in years)	7 years 2 months 12 days
Weighted- average exercise price	$ 72.56
Options Exercisable	1,915
Weighted-average exercise price	$ 72.47
Exercise prices range $83.88 - $84.93
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 83.88
Exercise prices maximum range	$ 84.93
Options Outstanding	8,045
Weighted-average remaining contractual life (in years)	5 years 2 months 12 days
Weighted- average exercise price	$ 84.17
Options Exercisable	5,118
Weighted-average exercise price	$ 84.34
Exercise prices range $88.61 - $114.83
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 88.61
Exercise prices maximum range	$ 115
Options Outstanding	8,086
Weighted-average remaining contractual life (in years)	8 years 1 month 6 days
Weighted- average exercise price	$ 97.78
Options Exercisable	1,566
Weighted-average exercise price	$ 95.92

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Supplementary Information

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Supplementary Information

19. Supplementary Information

Cash paid for interest and income taxes was as follows:

	(Stated in millions)
	2014		2013		2012
Interest	$	389	$	369	$	313
Income taxes	$	2,048	$	1,729	$	1,736

Interest and other income includes the following:

	(Stated in millions)
	2014		2013		2012
Interest income	$	51	$	33	$	30
Earnings of equity method investments		240		132		142
	$	291	$	165	$	172

The change in Allowance for doubtful accounts is as follows:

	(Stated in millions)
	2014			2013			2012
Balance at beginning of year	$	384		$	202		$	177
Provision		39			205			37
Amounts written off		(148	)		(23	)		(10	)
Divestiture of business		—			—			(2	)
Balance at end of year	$	275		$	384		$	202

Accounts payable and accrued liabilities are summarized as follows:

	(Stated in millions)
	2014		2013
Payroll, vacation and employee benefits	$	1,899	$	1,910
Trade		4,344		4,155
Other		3,003		2,772
	$	9,246	$	8,837

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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Jurisdictions	Dec. 31, 2013	Dec. 31, 2012
Income Tax Examination [Line Items]
Minimum number of jurisdictions to Schlumberger operates	100
US statutory federal rate	35.00%	35.00%	35.00%
Charges and credits, Pretax	$ 1,773	$ (420)	$ 161
Deferred tax assets, valuation allowances relating to net operating losses in certain countries	190	238
Accrued interest and penalties	243	253	250
Recognized interest and penalties	19	30	21
Domestic Country
Income Tax Examination [Line Items]
Charges and credits, Pretax	289	53	52
Foreign Country
Income Tax Examination [Line Items]
Charges and credits, Pretax	$ 1,484	$ (473)	$ 109
Minimum
Income Tax Examination [Line Items]
US statutory federal rate	0.00%
Maximum
Income Tax Examination [Line Items]
US statutory federal rate	40.00%

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Long-term Debt and Debt Facility Agreements (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Long-term Debt

Long-term Debt consists of the following:

	(Stated in millions)
	2014		2013
3.30% Senior Notes due 2021	$	1,597	$	1,596
3.65% Senior Notes due 2023		1,495		1,495
2.75% Guaranteed Notes due 2015 (1)		—		1,373
1.95% Senior Notes due 2016		1,100		1,099
4.20% Senior Notes due 2021		1,100		1,099
1.25% Senior Notes due 2017		1,000		999
2.40% Senior Notes due 2022		999		999
1.50% Guaranteed Notes due 2019(1)		628		697
2.65% Senior Notes due 2016 (2)		500		500
Commercial paper borrowings		1,538		—
Other		608		536
	$	10,565	$	10,393

⁽¹⁾ Schlumberger maintains a €5.0 billion Guaranteed Euro Medium Term Note program that provides for the issuance of various types of debt instruments such as fixed or floating rate notes in euro, US dollar or other currencies. The following is a summary of outstanding debt that was issued under this program:

· Schlumberger issued €0.5 billion 1.50% Guaranteed Notes due 2019 in the fourth quarter of 2013.  Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate equal to three-month LIBOR plus approximately 64 basis points.

· Schlumberger issued €1.0 billion 2.75% Guaranteed Notes due 2015 in the fourth quarter of 2010. Schlumberger entered into agreements to swap these euro notes for US dollars on the date of issue until maturity, effectively making this a US dollar denominated debt on which Schlumberger will pay interest in US dollars at a rate of 2.56%.

⁽²⁾ Schlumberger entered into agreements to swap these dollar notes for euros on the date of issue until maturity, effectively making this a euro-denominated debt on which Schlumberger pays interest in euros at a rate of 2.39%.

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Stockholders' Equity

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Stockholders' Equity

12. Stockholders’ Equity

Schlumberger is authorized to issue 4,500,000,000 shares of common stock, par value $0.01 per share, of which 1,275,312,404 and 1,307,330,369 shares were outstanding on December 31, 2014 and 2013, respectively. Holders of common stock are entitled to one vote for each share of stock held. Schlumberger is also authorized to issue 200,000,000 shares of preferred stock, par value $0.01 per share, which may be issued in series with terms and conditions determined by the Board of Directors. No shares of preferred stock have been issued.

Accumulated Other Comprehensive Loss consists of the following:

	(Stated in millions)
	Currency Translation Adjustments			Cash Flow Hedges			Pension and  Other Postretirement Benefit Plans			Unrealized  Gains on Marketable Securities			Total
Balance, January 1, 2012	$	(993	)	$	(26	)	$	(2,538	)	$	—		$	(3,557	)
Other comprehensive income (loss) before reclassifications		76			92			(1,016	)		141			(707	)
Amounts reclassified from accumulated other comprehensive loss		—			(36	)		312			—			276
Income taxes		—			—			100			—			100
Balance, December 31, 2012		(917	)		30			(3,142	)		141			(3,888	)
Other comprehensive income (loss) before reclassifications		(151	)		49			1,328			35			1,261
Amounts reclassified from accumulated other comprehensive loss		—			(50	)		425			—			375
Income taxes		—			—			(302	)		—			(302	)
Balance, December 31, 2013		(1,068	)		29			(1,691	)		176			(2,554	)
Other comprehensive income (loss) before reclassifications		(463	)		(238	)		(1,285	)		(166	)		(2,152	)
Amounts reclassified from accumulated other comprehensive loss		—			113			305			—			418
Income taxes		—			—			82			—			82
Balance, December 31, 2014	$	(1,531	)	$	(96	)	$	(2,589	)	$	10		$	(4,206	)

Other comprehensive loss was $1.652 billion in 2014 and $331 million in 2012.  Other comprehensive income was $1.334 billion in 2013.

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Supplementary Information - Cash Paid for Interest and Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Interest	$ 389	$ 369	$ 313
Income taxes	$ 2,048	$ 1,729	$ 1,736