EXHIBIT 99.4

Occidental Petroleum Corporation

Third Quarter 2013 Earnings Conference Call

October 29, 2013

1

Third Quarter 2013 Earnings - Highlights

•Total production (Boe/d)

•Domestic oil production (Bbl/d)

•Operating costs

•Capital program

•Core earnings

•Core diluted EPS

•YTD CFFO before WC

•Cash balance @ 9/30/2013

2

See Significant Items Affecting Earnings in the Investor Relations Supplemental Schedules.

Results

767,000

267,000

Better

Better

$1.6 billion

$1.97

$9.4 billion

$3.8 billion

2

Third Quarter 2013 Earnings - Highlights

Quarter-over-Quarter Impacts

•Improved oil and gas results

+Higher realized oil prices

+Higher domestic oil sales volumes

–Lower MENA oil sales volumes

•Higher marketing and trading
income

•Higher Chemicals core earnings*

3

*See Significant Items Affecting Earnings in the Investor Relations Supplemental Schedules.

Core Diluted EPS*

$1.97

$1.58

$1.70

3

4

3Q13 vs. 2Q13

($ in millions)

Core Results

•3Q13 $2.4 B

•2Q13   2.1 B

•3Q122.0 B

Third Quarter 2013 Earnings - Oil & Gas

Segment Earnings

($25)

4

5

Third Quarter 2013 Earnings - Oil and Gas

Total Production

767

(6)

(7)

2

2

4

766

Company-wide Oil & Gas Production (Mboe/d)

772

3Q13 Impacts (Mboe/d)

•Libya labor issues

(5)

(4)

•Qatar maintenance

2

•Colombia activity

5

6

2

Third Quarter 2013 Earnings - Oil and Gas
Domestic Production

469

(2)

470

6

476

Domestic Oil & Gas Production (Mboe/d)

6

Third Quarter 2013 Earnings - Oil & Gas
Realized Prices

Worldwide

Oil ($/bbl)

Worldwide

NGLs ($/bbl)

Domestic Nat.

Gas ($/mmbtu)

3Q13	$103.95	$40.53	$3.27
Benchmark %	98%*	38% *	90%
2Q13	$97.91	$38.78	$3.82
Benchmark %	104% *	41% *	95%
3Q12	$96.62	$40.65	$2.48
Benchmark %	105% *	44% *	90%

$105.83	$109.71	$3.62
$94.22	$103.35	$4.00
$92.22	$109.48	$2.76

WTI

NYMEX

Price Sensitivity	Pre-tax Income Impact (Quarter)
Oil +/- $1/bbl	=	+/- $38 mm
NGL +/- $1/bbl	=	+/- $8 mm
U.S. Nat Gas +/- $0.50/mmbtu	=	+/- $30 mm

Brent

Realized Prices

Benchmark Prices

7

* Note:As a % of WTI Oil.

7

8

Third Quarter 2013 Earnings - Oil & Gas Production
Costs

FY121Q132Q13 3Q13 YTD13

Domestic$17.43$14.06$14.28$14.65$14.33

Total$14.99$13.93$13.40$13.60$13.64

Production Costs ($/boe)

•~$500 million annualized domestic cost savings versus
full year 2012

8

9

* Lower energy and feedstock costs.

3Q13 vs. 2Q13

($ in millions)

Guidance

4Q13 expected
to be ~$100 mm

Third Quarter 2013 Earnings - Chemical
Segment Core Earnings

Core Results

•3Q13 $ 181 mm

•2Q13 144 mm

•3Q12162 mm

9

10

($ in millions)

Third Quarter 2013 Earnings - Midstream
Segment Earnings

Core Results

•3Q13 $212 mm

•2Q1348 mm

•3Q12156 mm

10

11

Third Quarter 2013 Earnings - YTD 2013 Cash Flow

YE2012 vs. YTD2013

($ in millions)

Cash Flow
From
Operations
before
Working
Capital
changes

$9,400

$6,400

Beginning
Cash $1,600
12/31/12

$3,800

YTD’13
Debt / Capital15%

Return on Equity14%

Return on Capital Employed*12%

* Note: Annualized; See attached GAAP reconciliation.

11

12

Third Quarter 2013 Earnings -
2013 Production Outlook

•Domestically, we are on track to achieve our second half oil
growth average of 6,000 to 8,000 barrels per day increase
over the first half average.

•Natural gas and NGL volumes will decline modestly in 4Q13
due to lower drilling on gas properties and natural decline,
coupled with the effect of a major plant turnaround in the
Permian.

•Internationally, we expect total production to be about flat in
4Q13 compared to 3Q13 volumes, excluding the impact of
insurgent activity in Colombia.

•We expect international sales volumes to increase in 4Q13
recouping the deferred liftings we experienced early in the year.

12

•Our annual capital is expected to be about $9 billion, about
$600 million lower than the $9.6 billion program we have
previously discussed.

•Of this reduction, approximately $200 million resulted from
achieving better than planned efficiencies in our oil and gas
program particularly in our drilling costs, $200 million primarily
from the deferral of certain oil and gas facilities spending and
midstream projects to 2014, and $100 million from lower than
planned spending in Iraq.

•We are particularly pleased that we are on track to meet or exceed
our planned drilling activity levels for the year, while spending less
capital than planned as a result of efficiency initiatives.

Third Quarter 2013 Earnings -

2013 Capital Outlook

13

13

14

Third Quarter 2013 Earnings -
4Q13 Guidance Summary

Oil & Gas Segment

•Domestic Production

–Oil - 6,000 - 8,000 bopd growth for 2H13 over 1H13

–NGLs - modest decline

–Natural gas - modest decline

•International

–Production volumes - similar to 3Q13

–Sales volumes - increase in 4Q13 to recoup deferred liftings

•Exploration expense: $100 mm in 4Q13

Chemical Segment

•~$100 mm operating income in 4Q13

Corporate

•Capital spending: $9 billion for FY 2013

•Income tax rate: 40% - 41%

14

Third Quarter 2013 Earnings - MENA Overview

15

•Over $20 bln free cash flow in last
15 years.

•Currently generating $1.6 bln free
cash flow (excluding Al Hosn Gas).

•Expect to generate over $2.0 bln annual
free cash flow after Al Hosn start-up.

•Invested $9 bln of capital since 2010,
75% in Oman, Abu Dhabi and Qatar.

•Drilled 2,500+ wells since 2010.

•37 drilling rigs currently running.

•$300 mm of exploration since 2010.

•~15,000 full-time employees and
contractors in the region, excluding the
workforce at the Al Hosn Gas project
which is currently >34,000.

•Active in the region for over
40 years.

•Diverse set of projects.

•High safety standards.

•Create local jobs and
development opportunities.

15

Third Quarter 2013 Earnings - MENA Overview

•Drilled several types of wells
throughout region.

–Onshore oil wells (Oman)

–Shallow water offshore oil wells
(Qatar)

–Sour gas onshore wells (Al Hosn)

16

•Expect MENA net production of
>260 mboe/d in 2013

•Al Hosn start-up should add net
production of >60 mboe/d at full
operational status in 2015

MENA 2013 Capital - $3.0 bn

16

Third Quarter 2013 Earnings - MENA Overview

17

•Continue to be a growing, profitable and vibrant business in the Middle East
Region.

•Continue to be a preferred strategic partner with the host countries where
we operate.

•Expand our Middle East area business by partnering with local investors to
secure strategically important growth projects.

•Continue to successfully execute projects.

•Achieve returns in excess of 20% on our invested capital.

•Continue our investment philosophy where our presence makes meaningful
contributions to the host economies and makes a positive difference in the
lives of people in the local communities, including increased education and
employment opportunities for nationals.

Strategic Goals

17

Third Quarter 2013 Earnings - MENA Overview

18

18

Third Quarter 2013 Earnings - Oman

19

•Present in Oman for 34 years.

•Operate Blocks 9, 27, 62 (Northern
Oman) and 53 (Mukhaizna).

•Largest independent oil producer with
highly skilled and loyal national staff.

•Over 81% of employees are Omani
nationals including the President of
our Oman business unit.

•Gross production expected to be
230 mboe/d and net 76 mboe/d in 2013.

•Significant free cash flow generator.

•Expect to continue to achieve returns
in excess of 20% from our Oman
projects.

19

Third Quarter 2013 Earnings - Oman

20

Oman Gross Production

Oxy Operated since 1994

previous operators

20

Third Quarter 2013 Earnings - Northern Oman

21

•Development wells, exploration
success and water flood technology.

•Increase in gross production from
92 to 106 mboe/d since 2010.

•Large pipeline hub and gas plant at
Safah.

•Gross avg. operating costs at ~$5.50 /
boe.

•Drilled 107 of 153 planned wells for 2013.

•Typically horizontal wells with lateral
lengths of 1,800 - 3,500 feet.

•Recent production rates as high as 3,800
boe/d with 2013 average of ~550 boe/d.

•125 development wells in 2014.

Northern Oman Blocks 9 & 27

21

Third Quarter 2013 Earnings - Northern Oman

22

•Over next 5 years, plans include 400
development and water injection wells,
~50 exploration wells and expanding
the waterfloods over a greater area.

•Expect annual drilling capital between
$250 mm to $300 mm per year.

•Development program will increase
gross production to ~125 mboe/d.

•Exploration program with >60%
success rate.

•Attribute success to use of horizontal
drilling, state of the art 3D seismic and
new play concepts.

Block 9

22

Third Quarter 2013 Earnings - Northern Oman

23

•Discoveries this year have average
production of 3 mboe/d with >70% oil.

•Nearing completion of new, 2,000
square mile 3D seismic program.

•Should yield many attractive
prospects.

•Over next 5 years, expect to drill more
than 50 exploration wells, 13 of which
are planned for 2014, to generate >250
new development drilling locations.

•Block 62 development is in the early
stages of engineering with a number
of gas producers already drilled.

•Planning to further delineate one of
the larger structures and present an
updated development plan to the
Government during 2014.

Highly Successful Exploration

23

Third Quarter 2013 Earnings - Mukhaizna

24

•One of world’s largest steamflood
projects, ranked 3rd in the world and
larger than any US steamflood.

•Assumed operation in 2005 and have
increased gross production from 8
to 125 mbo/d.

•Between 2005 - 2012, produced
160 mm barrels of oil.

•Drilled 2,000+ wells, of which 825
are producers.

•Inject over 500,000+ barrels of steam
per day.

•Anticipated peak production of
135 - 140 Mboe/d.

Mukhaizna

24

Third Quarter 2013 Earnings - Mukhaizna

25

•Expect to drill 340 wells in 2013.

•Recent production rates have been as
high as 830 bopd with an average for
2013 of around 330 bopd.

•Plan to drill ~300 wells in 2014.

•6 rigs running.

•Delineating the Kahmah fractured
carbonate heavy oil reservoir, which
is extensive and lies above the main
pay of Mukhaizna.

•Plan to drill first deep exploration well
in 2014.

Mechanical Vapor Compressor Units

Production Processing

25

Third Quarter 2013 Earnings - Qatar

26

•Idd El Shargi North Dome (ISND),
Idd El Shargi South Dome (ISSD),
Al Rayyan, Dolphin project.

•Expect returns well in excess
of 20%.

•In nearly 20 years, have invested
$4.3 bln and produced 680 MM bbls
of oil.

•Significant free cash flow.

•2013 gross production is
106 mbo/d from the 3 oil fields,
netting 67 mbo/d.

•Dolphin’s current net production
is 38 mboe/d.

26

Third Quarter 2013 Earnings - Qatar

27

Oxy operated since 1994

previous operators

Qatar Gross Production

27

Third Quarter 2013 Earnings - Qatar

28

•Will drill 17 wells at ISND in 2013 from
jack-up rigs in water depth of ~130 feet.

•Have drilled 268 horizontal producing
wells since 1994, and over 100
horizontal water injectors.

•Recent production rates as high as
4,500 bo/d with an average for 2013
of ~1,460 bo/d.

•Phase V Development plan

−Drill 205 wells for $1.2 billion, including
36 wells in 2014.

−Installation of new wellhead platforms,
compression and power platform,
pipelines and related facilities.

•Will continue plateau gross production
of 100 mbo/d for many years to come.

•New development opportunities being
planned for ISSD and Al Rayyan fields.

28

Third Quarter 2013 Earnings - Dolphin

29

•Flagship project in the region.

•Two offshore platforms in the North Field
of Qatar bringing gas to the onshore
plant in Ras Laffan.

•Process wet gas into condensate,
NGLs and sulfur; dry gas exported
to the UAE & Oman under LT contract.

•Expanding gas compression facilities
to achieve maximum pipeline capacity
of 3.5 bcf/d.

•Substantial opportunities remain to sign-
up add’l customers to provide gas
transport up to full pipeline capacity
generating add’l midstream revenues
and cash flows.

•2013 net production 38 mboepd.

•Significant free cash flow generator which
will grow over time with new customers.

Dubai

Taweelah

Jebel Ali

Abu Dhabi

Al Ain

Fujayrah

Umm Sa’id

Doha

Al Hawailah

Dolphin

ISND

ISSD

Block 12

Al Rayyan

Qatar

Saudi Arabia

United Arab Emirates

Oman

Iran

48” Export Pipeline

Al Hosn Gas

29

Third Quarter 2013 Earnings - United Arab Emirates

30

•Presence in UAE since 2000 with regional
hub based in Abu Dhabi supporting
MENA assets with Engineering,
Geoscience, Business Development,
Operations and other functions.

•Dolphin pipeline expanded to 475 miles
throughout UAE and into Oman.

•Al Hosn gas project partnering with the
Abu Dhabi National Oil Company,
(“ADNOC”), involves the development
of a giant sour gas field south in the
western region of Abu Dhabi.

•Gas from the field contains natural gas
and condensate along with high
concentrations of H2S and CO2.

•Al Hosn is a world-scale mega-project.

•Remains on schedule and on budget.

Dubai

Taweelah

Jebel Ali

Abu Dhabi

Al Ain

Fujayrah

Umm Sa’id

Doha

Al Hawailah

Dolphin

ISND

ISSD

Block 12

Al Rayyan

Qatar

Saudi Arabia

United Arab Emirates

Oman

Iran

48” Export Pipeline

Al Hosn Gas

30

Third Quarter 2013 Earnings - Al Hosn

31

Al Hosn Gas Project

•Plant will be able to process ~1 Bcfd of gas
from the field and separate it into sales gas,
condensate, NGLs and sulfur.

•Oxy’s net production expected to be 200+
MMSCFD of sales gas and 20+ MBOEPD of
NGLs and condensate.

•By the end of 2013 the project will be ~92%
complete and start up in 2014.

•2013 Oxy share of capital is ~$1.0 billion,
including facilities, infrastructure and drilling
costs.

•Total project cost is expected to be on budget
at ~$10 bln, with Oxy share of $4 bln.

•Expect first production in 4Q14.Once the
project achieves steady state, annual free cash
flow to Oxy should be ~$600 million at about
current liquids prices.

•Currently spending about $1 bln / year of
capital, so steady state operations will provide
a net cash flow swing of $1.6 bln annually.

31

Third Quarter 2013 Earnings - MENA Summary

32

•Currently looking to sell a minority interest in our MENA operations.

•Believe this will give us an exciting opportunity to possibly partner
with key regional players.

•This sale will reduce the Middle East/North Africa share in our
overall portfolio.

•We believe a partnership with regional investors will align us with
local interests in our existing operations and on new opportunities
throughout the Middle East to achieve future growth from a lower
base.

32

Third Quarter 2013 Earnings - MENA Summary

33

•We are well positioned to meet each of our strategic goals in the
region:

•We have a highly profitable, vibrant and growing business;

•Developed strong and lasting relationships with host countries
and will continue to be a preferred strategic partner;

•Our plans to sell minority interest will assure that we continue to
grow our business profitably over time by securing strategically
important future projects;

•Development and operating plans will ensure continued success
in executing our projects;

•Continue to achieve returns in excess of 20% on invested capital;

•Continuing to apply investment philosophy where our presence
makes meaningful contributions to host economies and makes a
positive difference in the lives of people in local communities,
including increased education and employment opportunities for
nationals.

33

Third Quarter 2013 Earnings - Strategic Review

34

•Recently announced the initial phase of the Company’s strategic review to
streamline and focus our operations in order to better execute the Company’s
long-term strategy and enhance value for our shareholders.

•As part of the initial actions, Oxy’s Board of Directors has authorized the
following:

−Pursue the sale of a minority interest in the Middle East/North Africa operations
in a financially efficient manner.

−Pursue strategic alternatives for select Midcontinent assets, including oil and gas
interests in the Williston Basin, Hugoton Field, Piceance Basin and other Rocky
Mountain assets.

−Sale of a portion of the Company’s 35-percent investment in the General Partner
of Plains All-American Pipeline, L.P. in an IPO, resulting in pre-tax proceeds of
$1.4 billion.This initial sale process is concluded and we have received the
proceeds.Our current cash balance of $3.8 billion at the end of 3Q does not
include these proceeds.Oxy’s remaining interest in Plains All-American Pipeline,
based on the IPO price, is valued at approximately $3.3 billion.

34

Third Quarter 2013 Earnings - Strategic Review

35

•These are the first formal steps in our effort to streamline the business,
concentrate in areas where we have depth and scale and improve overall
profitability.

−Our goal is to become a somewhat smaller company with more manageable
exposure to political risk.

−We will continue to consider additional strategic alternatives for the Company
to maximize total returns to our shareholders.

•These actions are expected to generate a significant amount of proceeds.
Together with the excess cash on the Company’s balance sheet, these
funds will largely be used to reduce Occidental’s capitalization.

•While we expect to use a substantial portion of the proceeds to repurchase
our shares, we also anticipate paying down some debt on a proportional basis.

−We expect to retire $600 million of bonds due in December.

•We also expect to re-invest a portion of the proceeds in high-return growth
opportunities.

•We continue to make steady progress and expect to complete strategic review
in the coming months and will disclose material developments as they occur.

35

36

Third Quarter 2013 Earnings - Capital Efficiency &
Operating Cost Reduction Program

•Embarked on aggressive plan to improve our operational efficiency across all cost categories;
continue to run ahead of full-year objectives.

−Reduced our domestic well costs by 22% and operating costs by ~18%relative to 2012, ahead of previously
stated targets of 15% well cost improvement and total oil and gas operating costs below $14/boe for 2013.

−Total annualized savings from these initiatives amount to $1.2 billion compared to 2012.

−Expect these savings to result in additional development opportunities as previously marginal projects
are now economic.

•The purpose of these initiatives is to improve our return on capital while continuing to execute a
focused drilling program in our core areas and grow our domestic oil volumes.

•Cost savings will result in a year-over-year improvement in our F&D costs, leading to a more stable
DD&A rate.

•Believe we can sustain the benefits realized to date, achieve additional savings in drilling costs and
reach 2011 operating cost levels without loss in production or sacrificing safety.

Production Costs ($/boe)

36

Third Quarter 2013 Earnings - California

•Large and diverse portfolio of opportunities
with more than 2.1 million net acres.

•Reduced overall operating expenses by
more than $4.00/boe.

–Improvement in operating and drilling costs
has exceeded our targets.

–Expect combined savings of at least
$300 million in 2013 compared to 2012.

•As a result of these improvements, and
combined with more favorable permitting,
we plan to increase capital spending in
California by $500 million to ~$2.1 billion in
2014.

•Most of the increase will be directed toward
unconventional opportunities where we
have more than 1,000,000 prospective acres.

37

<

37

Third Quarter 2013 Earnings - Permian Non-CO2

38

•Accumulated more than 1.7 million net
acres covering both relatively established
and emerging plays, anchored by our core,
high-free cash flow generating CO2 flood
reservoirs.

•Recently created an exploitation team
whose mandate is to optimize our drilling
capabilities and accelerate the development
of our unconventional opportunities.

•In 2013, focused on delineating opportunities
in established plays and testing the potential
of many emerging plays, which included the
drilling of ~30 horizontal wells.

•In 2013, reduced drilling costs by 20%+
which has increased our ability to enhance
our economics utilizing horizontal drilling
and multi-stage completions to develop
established unconventional reservoirs.

Permian Basin Primary Plays

38

Third Quarter 2013 Earnings - Permian Non-CO2

39

•As a result of these efforts, we can now shift
our development strategy and expect to
spend an additional $500 million of capital
next year largely directed toward increased
drilling of horizontal wells.

•Step up in capital will allow for an additional
4 rigs which will be dedicated to drilling
horizontal wells in our focus plays of the
Wolfcamp, Wolfbone, and Bone Springs in the
Delaware Basin, as well as in the Wolfcamp in
the Midland Basin.

•Expect to drill roughly five times as many
horizontal wells in 2014 as compared to 2013.

•Represents a major change in our Permian
non-CO2 development strategy in which the
number of horizontal wells drilled next year
will account for more than 50% of the total
wells, compared to only 10% during 2013.

Acreage in Select Permian Plays

(Thousands of Acres)

39

Third Quarter 2013 Earnings - Colombia

40

•Our 30+ year history of operating in Colombia has provided us with
unique insight around heavy oil production and mature oil field
development opportunities.

•Historically this has been among Oxy’s most profitable operations.

•The experience associated with steam flood development is a
core competency at Oxy, and a skill that fits well with Colombia’s
strategy to grow its crude oil production.

•We intend to focus our efforts on applying our expertise toward
the pursuit of additional high-return oil redevelopment projects,
and we expect to participate in several more steam flood project
opportunities in coming years.

40

Third Quarter 2013 Earnings - MENA

41

•In our Middle East/North Africa business, the majority of the value in terms
of our production, income and cash flow is derived from three key countries
- Oman, Qatar and the U.A.E.The majority of our regional capital is also
deployed in these countries.

•We feel fortunate to have had many successful years operating in the region.
Part of this we believe is a result of successfully executing on a number of
challenging projects.

•We also feel that it is in part due to the mutual respect we have for our
partners, the host countries in which we operate, and for the people who
reside there.

•Although a sale of a minority interest will reduce our exposure in the region,
we expect to remain a major participant with a focused presence.

•Our track record of success and strong relationships should allow us to
compete formidably for new projects and provide us with future growth
off of a smaller base.

•We look forward to forging new partnerships in the region which will allow
us to continue our profitable growth strategy.

41

Third Quarter 2013 Earnings - Chemicals

42

•We plan to pursue a 50/50 joint venture with
Mexichem to build a world scale ethylene
cracker at the OxyChem plant in Ingleside, TX.

•Construction on the Ingleside cracker project
is expected to begin in mid-2014 with the
facilities becoming commercially operational
in early 2017, and we expect it will have a
material benefit on our Chemical earnings.

•The project is just one example of several we
plan to pursue in our effort to capture greater
value in the downstream portion of the natural
gas and NGL chain versus an upstream gas
producer.

•OxyChem is expected to continue to be free
cash flow positive through the investment
phase of the project.

OxyChem Ingleside Ethylene Cracker

42

Third Quarter 2013 Earnings - Chemicals

43

•As part of a long-term
strategic supply
relationship with
Mexichem, essentially
all of the ethylene
produced from the
cracker will be
consumed by Oxy in
the manufacture of
vinyl chloride monomer
(VCM) utilizing our
existing production
capacity.

•The VCM will then be
delivered to Mexichem
to produce polyvinyl
chloride (PVC) and PVC
piping systems.

OxyChem’s Operations

OxyChem

Oxy Oil & Gas

Gas

Production

Gas

Processing

NGL

Fraction-
ation

Chlorine

Cogen

Caustic

EDC

Cracker

VCM

PVC

Mexichem

(PVC/Pipe)

Cell

Power

Steam

Ethylene

Natural

Gas

Propane/Butane
/C5+

Market

Ethane

Salt/Brine

Significant benefit:

Increased integration from
the well head to VCM
production and sales

43

Third Quarter 2013 Earnings - Midstream

44

•The BridgeTex pipeline continues
on track for scheduled start-up in
mid-2014.

•The roughly 450-mile-long pipeline
will be capable of transporting
approximately 300,000 barrels per
day of crude oil between the Permian
region and the Gulf Coast refinery
markets.

Bridge Tex Pipeline

44

Third Quarter 2013 Earnings Conference Call

Q&A

45