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Segment Information (Tables)
6 Months Ended
Jun. 30, 2011
Segment Information [Abstract]  
Financial information with respect to reportable segments
 
                                 
    Three Months Ended
    Six Months Ended
 
    June 30,     June 30,  
    2011     2010     2011     2010  
    (In thousands)  
 
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations:(1)
                               
Contract Drilling:(2)
                               
U.S. Lower 48 Land Drilling
  $ 404,984     $ 303,417     $ 783,552     $ 574,914  
U.S. Land Well-servicing
    164,140       104,860       314,396       202,851  
U.S. Offshore
    40,284       38,978       70,738       77,176  
Alaska
    32,336       43,385       73,651       93,179  
Canada
    87,974       60,759       260,417       176,315  
International
    265,231       267,007       527,708       512,351  
                                 
Subtotal Contract Drilling(3)
    994,949       818,406       2,030,462       1,636,786  
Pressure Pumping(4)
    265,930             523,789        
Oil and Gas(5)
    11,755       9,800       31,883       20,402  
Other Operating Segments(6)(7)
    162,491       107,749       283,874       203,262  
Other reconciling items(8)
    (70,913 )     (31,081 )     (108,243 )     (56,588 )
                                 
Total
  $ 1,364,212     $ 904,874     $ 2,761,765     $ 1,803,862  
                                 
Adjusted income (loss) derived from operating activities from continuing operations:(1)(9)
                               
Contract Drilling:
                               
U.S. Lower 48 Land Drilling
  $ 99,231     $ 58,169     $ 179,326     $ 118,455  
U.S. Land Well-servicing
    16,526       3,231       27,649       10,416  
U.S. Offshore
    (1,059 )     8,104       (5,036 )     15,477  
Alaska
    8,288       12,388       19,307       26,345  
Canada
    (2,512 )     (9,497 )     36,480       5,385  
International
    35,851       64,972       71,348       118,551  
                                 
Subtotal Contract Drilling(3)
    156,325       137,367       329,074       294,629  
Pressure Pumping(4)
    43,888             87,603        
Oil and Gas(5)
    4,959       1,998       4,189       4,617  
Other Operating Segments(6)(7)
    13,641       8,317       19,779       15,207  
Other reconciling items(10)
    (43,971 )     (20,914 )     (74,754 )     (45,883 )
                                 
Total adjusted income derived from operating activities
  $ 174,842     $ 126,768     $ 365,891     $ 268,570  
Interest expense
    (63,739 )     (65,293 )     (137,663 )     (132,062 )
Investment income (loss)
    (969 )     2,314       11,318       (243 )
Gains (losses) on sales and retirements of long-lived assets and other income (expense), net
    (5,572 )     (11,024 )     (11,601 )     (31,391 )
                                 
Income (loss) from continuing operations before income taxes
    104,562       52,765       227,945       104,874  
Income tax expense (benefit)
    35,664       8,794       73,971       17,384  
Subsidiary preferred stock dividend
    750             1,500        
                                 
Income (loss) from continuing operations, net of tax
    68,148       43,971       152,474       87,490  
Income (loss) from discontinued operations, net of tax
    123,906       (909 )     121,736       (5,330 )
                                 
Net income (loss)
    192,054       43,062       274,210       82,160  
Less: Net income (loss) attributable to noncontrolling interest
    394       559       1,063       1,661  
                                 
Net income (loss) attributable to Nabors
  $ 192,448     $ 43,621     $ 275,273     $ 83,821  
                                 
 
                 
    June 30,
    December 31,
 
    2011     2010  
    (In thousands)  
 
Total assets:
               
Contract Drilling:(11)
               
U.S. Lower 48 Land Drilling
  $ 2,965,214     $ 2,762,362  
U.S. Land Well-servicing
    748,151       630,518  
U.S. Offshore
    371,651       379,292  
Alaska
    287,086       313,123  
Canada
    1,012,559       1,065,268  
International
    3,489,873       3,279,763  
                 
Subtotal Contract Drilling
    8,874,534       8,430,326  
Pressure Pumping(4)
    1,203,062       1,163,236  
Oil and Gas(12)
    951,127       805,410  
Other Operating Segments(13)
    551,266       539,373  
Other reconciling items(10) (14)
    535,663       708,224  
                 
Total assets
  $ 12,115,652     $ 11,646,569  
                 
 
 
(1) All information presents the operating activities of oil and gas assets in the Horn River basin in Canada and in the Llanos basin in Colombia as discontinued operations.
 
(2) These segments include our drilling, well-servicing and workover operations on land and offshore.
 
(3) Includes earnings (losses), net from unconsolidated affiliates, accounted for using the equity method, of $3.7 million and $2.9 million for the three months ended June 30, 2011 and 2010, respectively, and $3.9 million and $3.0 million for the six months ended June 30, 2011 and 2010, respectively.
 
(4) Includes operating results of our Pressure Pumping operating segment, added to our lines of business during the third quarter of 2010, for the three and six months ended June 30, 2011.
 
(5) Includes earnings (losses), net from unconsolidated affiliates, accounted for using the equity method, of $6.2 million and $3.2 million for the three months ended June 30, 2011 and 2010, respectively, and $21.4 million and $7.7 million for the six months ended June 30, 2011 and 2010, respectively.
 
(6) Includes our drilling technology and top drive manufacturing, directional drilling, rig instrumentation and software, and construction and logistics operations.
 
(7) Includes earnings (losses), net from unconsolidated affiliates, accounted for using the equity method, of $(.6) million and $2.7 million for the three months ended June 30, 2011 and 2010, respectively, and $.3 million and $5.8 million for the six months ended June 30, 2011 and 2010, respectively.
 
(8) Represents the elimination of inter-segment transactions.
 
(9) Adjusted income (loss) derived from operating activities is computed by subtracting direct costs, general and administrative expenses, depreciation and amortization, and depletion expense from Operating revenues and then adding Earnings (losses) from unconsolidated affiliates. Such amounts should not be used as a substitute for those amounts reported under GAAP. However, management evaluates the performance of our business units and the consolidated company based on several criteria, including adjusted income (loss) derived from operating activities, because it believes that these financial measures accurately reflect our ongoing profitability. A reconciliation of this non-GAAP measure to income (loss) before income taxes, which is a GAAP measure, is provided within the above table.
 
(10) Represents the elimination of inter-segment transactions and unallocated corporate expenses.
 
(11) Includes $58.7 million and $54.8 million of investments in unconsolidated affiliates accounted for using the equity method as of June 30, 2011 and December 31, 2010, respectively.
 
(12) Includes $178.0 million and $146.5 million investments in unconsolidated affiliates accounted for using the equity method as of June 30, 2011 and December 31, 2010, respectively.
 
(13) Includes $64.7 million and $64.5 million of investments in unconsolidated affiliates accounted for using the equity method as of June 30, 2011 and December 31, 2010, respectively.
 
(14) Includes $2.5 million and $1.9 million of investments in unconsolidated affiliates accounted for using the cost method as of June 30, 2011 and December 31, 2010, respectively.