Exhibit 99.3

EXHIBIT 99.3

Investor Relations Supplemental Schedules

Investor Relations Supplemental Schedules

2007 First Quarter

Summary

($ Millions)

	1Q 2007	1Q 2006
Reported Net Income	$1,212	$1,231
EPS - Diluted	$1.43	$1.43
Core Results	$831	$1,153
EPS - Diluted	$0.98	$1.34
Total Worldwide Production (mboe/day)	587	563
Total Worldwide Crude Oil Realizations ($/BBL)	$51.78	$55.38
Domestic Natural Gas Realizations ($/MCF)	$6.38	$8.36
Wtd. Average Basic Shares O/S (mm)	841.0	848.5
Wtd. Average Diluted Shares O/S (mm)	846.5	860.9
Shares Outstanding (mm)	833.8	856.5
Cash Flow from Operations	$1,600	$2,000

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

2007 First Quarter

Net Income (Loss)

($ millions)

	Reported Income				Significant Items Affecting Income					Core Results
Oil & Gas		$	2,070			$	(412	)	Sale of Russia - Vanyoganneft		$	1,549
							(109	)	Litigation settlements
Chemical			137									137
Corporate
Interest expense, net			(181	)			172		Debt tender offer			(9	)
Other			(111	)			47		Plant closure			(64	)
Taxes			(703	)			(79	)	Tax effect of adjustments			(782	)
							-
Income from continuing operations			1,212				(381	)				831
Discontinued operations, net of tax			-									-
Net Income		$	1,212			$	(381	)			$	831
Basic Earnings Per Common Share
Income from continuing operations		$	1.44
Discontinued operations, net			-
Net Income		$	1.44								$	0.99
Diluted Earnings Per Common Share
Income from continuing operations		$	1.43
Discontinued operations, net			-
Net Income		$	1.43								$	0.98

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

2006 First Quarter

Net Income (Loss)

($ millions)

	Reported Income				Significant Items Affecting Income					Core Results
Oil & Gas		$	1,910								$	1,910
Chemical			250									250
Corporate
Interest expense, net			(29	)								(29	)
Other			(71	)								(71	)
Taxes			(907	)								(907	)

Income from continuing operations			1,153				-					1,153
Discontinued operations, net of tax			78				(78	)	Discontinued operations, net			-
Net Income		$	1,231			$	(78	)			$	1,153
Basic Earnings Per Common Share
Income from continuing operations		$	1.36
Discontinued operations, net of tax			0.09
Net Income		$	1.45								$	1.36
Diluted Earnings Per Common Share
Income from continuing operations		$	1.34
Discontinued operations, net of tax			0.09
Net Income		$	1.43								$	1.34

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

Items Affecting Comparability of Core Earnings Between Periods

The item(s) below are included in core earnings but are shown in this table

because they affect the comparability of core earnings between periods.

Pre-tax
Income / (Expense)	First Quarter
	2007		2006
Corporate
Environmental remediation	(8	)	(7	)

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

Worldwide Effective Tax Rate

	QUARTERLY
REPORTED INCOME	2007 QTR 1		2006 QTR 4		2006 QTR 1
Oil & Gas (a)	2,070		1,499		1,910
Chemicals	137		157		250
Corporate & other	(292	)	62		(100	)
Pre-tax income	1,915		1,718		2,060
Income tax expense
Federal and state	281		393		461
Foreign (a)	422		402		446
Total	703		795		907

Income from continuing operations	1,212		923		1,153
Worldwide effective tax rate	37%		46%		44%
CORE RESULTS	2007 QTR 1		2006 QTR 4		2006 QTR 1
Oil & Gas (a)	1,549		1,499		1,910
Chemicals	137		157		250
Corporate & other	(73	)	(105	)	(100	)
Pre-tax income	1,613		1,551		2,060
Income tax expense
Federal and state	360		312		461
Foreign (a)	422		402		446
Total	782		714		907

Core results	831		837		1,153
Worldwide effective tax rate	48%		46%		44%

(a) Revenues and income tax expense include taxes owed by Occidental but paid by governmental entities on its behalf. Oil and Gas pre-tax income includes the following revenue amounts by periods.

2007

QTR 1

2006

QTR 4

2006

QTR 1

288

252

290

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

2007 First Quarter Net Income (Loss)

Reported Income Comparison

	First Quarter 2007				Fourth Quarter 2006				B / (W)
Oil & Gas		$	2,070			$	1,499			$	571
Chemical			137				157				(20	)
Corporate
Interest expense, net			(181	)			(51	)			(130	)
Other			(111	)			113				(224	)
Taxes			(703	)			(795	)			92
Income from continuing operations			1,212				923				289
Discontinued operations, net			-				7				(7	)
Net Income		$	1,212			$	930			$	282
Earnings Per Common Share
Basic		$	1.44			$	1.10			$	0.34
Diluted		$	1.43			$	1.09			$	0.34
Worldwide Effective Tax Rate			37%				46%				9%

OCCIDENTAL PETROLEUM

2007 First Quarter Net Income (Loss)

Core Results Comparison

	First Quarter 2007				Fourth Quarter 2006				B / (W)
Oil & Gas		$	1,549			$	1,499			$	50
Chemical			137				157				(20	)
Corporate
Interest expense, net			(9	)			(20	)			11
Other			(64	)			(85	)			21
Taxes			(782	)			(714	)			(68	)
Core Results		$	831			$	837			$	(6	)
Core Results Per Common Share
Basic		$	0.99			$	0.99			$	-
Diluted		$	0.98			$	0.98			$	-
Worldwide Effective Tax Rate			48%				46%				-2%

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

Oil & Gas

Core Results Variance Analysis 1Q07 vs. 4Q06

($ millions)

OCCIDENTAL PETROLEUM

Chemical

Core Results Variance Analysis 1Q07 vs. 4Q06

($ millions)

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

2007 First Quarter Net Income (Loss)

Reported Income Comparison

	First Quarter 2007				First Quarter 2006				B / (W)
Oil & Gas		$	2,070			$	1,910			$	160
Chemical			137				250				(113	)
Corporate
Interest expense, net			(181	)			(29	)			(152	)
Other			(111	)			(71	)			(40	)
Taxes			(703	)			(907	)			204
Income from continuing operations			1,212				1,153				59
Discontinued operations, net			-				78				(78	)
Net Income		$	1,212			$	1,231			$	(19	)
Earnings Per Common Share
Basic		$	1.44			$	1.45			$	(0.01	)
Diluted		$	1.43			$	1.43			$	-
Worldwide Effective Tax Rate			37%				44%				7%

OCCIDENTAL PETROLEUM

2007 First Quarter Net Income (Loss)

Core Results Comparison

	First Quarter 2007				First Quarter 2006				B / (W)
Oil & Gas		$	1,549			$	1,910			$	(361	)
Chemical			137				250				(113	)
Corporate
Interest expense, net			(9	)			(29	)			20
Other			(64	)			(71	)			7
Taxes			(782	)			(907	)			125
Core Results		$	831			$	1,153			$	(322	)
Core Results Per Common Share
Basic		$	0.99			$	1.36			$	(0.37	)
Diluted		$	0.98			$	1.34			$	(0.36	)
Worldwide Effective Tax Rate			48%				44%				-4%

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

Oil & Gas

Core Results Variance Analysis 1Q07 vs. 1Q06

($ millions)

OCCIDENTAL PETROLEUM

Chemical

Core Results Variance Analysis 1Q07 vs. 1Q06

($ millions)

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

SUMMARY OF OPERATING STATISTICS

	First Quarter
	2007			2006
NET PRODUCTION PER DAY:
United States
Crude Oil and Liquids (MBL)
California		85			82
Permian		165			166
Horn Mountain		10			15
Hugoton and other		4			3
Total		264			266
Natural Gas (MMCF)
California		232			250
Hugoton and other		150			133
Permian		198			189
Horn Mountain		5			10
Total		585			582
Latin America
Crude Oil (MBL)
Argentina		33			24
Colombia		42			39
Total		75			63
Natural Gas (MMCF)
Argentina		21			13
Bolivia		14			13
		35			26
Middle East / North Africa
Crude Oil (MBL)
Oman		22			17
Qatar		46			44
Yemen		32			32
Libya		26			22
Total		126			115
Natural Gas (MMCF)
Oman		26			25
Other Eastern Hemisphere
Crude Oil (MBL)
Pakistan		4			4
Natural Gas (MMCF)
Pakistan		73			75
Barrels of Oil Equivalent (MBOE)
Subtotal consolidated subsidiaries		589			566
Other interests
Colombia – minority interest		(5	)		(5	)
Yemen – Occidental net interest		3			2
Total worldwide production (MBOE) (a)		587			563

(a) Occidental sold its interest in the Russian Vanyoganneft joint venture in January 2007. Russian production has been excluded for comparability.

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

SUMMARY OF OPERATING STATISTICS

	First Quarter
	2007		2006
OIL & GAS:
PRICES
United States
Crude Oil ($/BBL)		52.17		55.25
Natural gas ($/MCF)		6.38		8.36
Latin America
Crude Oil ($/BBL)		45.71		51.82
Natural Gas ($/MCF)		1.94		1.76
Middle East / North Africa
Crude Oil ($/BBL)		55.31		57.94
Natural Gas ($/MCF)		0.97		0.97
Other Eastern Hemisphere
Crude Oil ($/BBL)		49.67		50.63
Natural Gas ($/MCF)		2.95		2.85
Total Worldwide (a)
Crude Oil ($/BBL)		51.78		55.38
Natural Gas ($/MCF)		5.59		7.20

	First Quarter
	2007			2006
Exploration Expense
Domestic		$	18		$	32
Latin America			23			3
Middle East / North Africa			53			23
Other Eastern Hemisphere			8			13
TOTAL		$	102		$	71

(a) Occidental sold its interest in the Russian Vanyoganneft joint venture in January 2007. Russian production has been excluded for comparability.

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

SUMMARY OF OPERATING STATISTICS

	First Quarter
Capital Expenditures ($MM)	2007			2006
Oil & Gas
California		$	132		$	103
Permian			164			127
Other – U.S.			44			67
Latin America			114			47
Middle East / North Africa			293			209
Other Eastern Hemisphere			4			6
Chemicals			27			33
Corporate			6			4
TOTAL		$	784		$	596
Depreciation, Depletion &	First Quarter
Amortization of Assets ($MM)	2007			2006
Oil & Gas
Domestic		$	251		$	205
Latin America			90			49
Middle East / North Africa			153			129
Other Eastern Hemisphere			9			9
Chemicals			73			66
Corporate			12			5
TOTAL		$	588		$	463

Investor Relations Supplemental Schedules

OCCIDENTAL PETROLEUM

CORPORATE

($ millions)

	31-Mar-07			31-Dec-06
CAPITALIZATION
Long-Term Debt (including current maturities)		$	2,140		$	2,790
Subsidiary Preferred Stock			75			75
Others			25			25
Total Debt		$	2,240		$	2,890
EQUITY		$	20,217		$	19,252
Total Debt To Total Capitalization			10%			13%

Investor Relations Supplemental Schedules

See the investor relations supplemental schedules for the reconciliation of non-GAAP items. Statements in this presentation that contain words such as "will", "expect" or "estimate", or otherwise relate to the future, are forward-looking and involve risks and uncertainties that could materially affect expected results. Factors that could cause results to differ materially include, but are not limited to: exploration risks, such as drilling of unsuccessful wells; global commodity pricing fluctuations and supply/demand considerations for oil, gas and chemicals; higher-than-expected costs; political risk; and not successfully completing (or any material delay in) any expansion, capital expenditure, acquisition, or disposition. You should not place undue reliance on these forward-looking statements which speak only as of the date of this filing. Unless legally required, Occidental disclaims any obligation to update any forward-looking statements as a result of new information, future events or otherwise. U.S. investors are urged to consider carefully the disclosure in our Form 10-K, available through the following toll-free telephone number, 1-888-OXYPETE (1-888-699-7383) or on the Internet at http://www.oxy.com. You also can obtain a copy from the SEC by calling 1-800-SEC-0330.