EXHIBIT 99.1


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                        OCCIDENTAL PETROLEUM CORPORATION


                                   [OXY LOGO]


                                DR. RAY R. IRANI
                       CHAIRMAN & CHIEF EXECUTIVE OFFICER
                        OCCIDENTAL PETROLEUM CORPORATION

                           BANC OF AMERICA SECURITIES
                         2004 ENERGY & POWER CONFERENCE


                                                          November 16, 2004


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     Good morning. It's a pleasure to be here at Banc of America's 2004 Energy
and Power Conference.

     2003 was an outstanding year for Occidental and the momentum has carried
over into 2004.

     Today, I'm going to review our past performance, as well as share our
vision for the future. When a company achieves the kind of results we have,
investors and analysts want to know how we plan to sustain that level of
performance.


                                                                               1




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OXY BUSINESS MODEL                                                    [OXY LOGO]


     o    Building blocks for profitable growth

          -    Enhanced oil recovery (EOR)

          -    Acquisitions

          -    Exploration


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     I'm confident we can because we have a durable business model that will
continue to generate profitable growth projects. Our business model is driven by
three engines to add commercial oil and gas reserves and generate profitable
production growth - enhanced oil recovery projects, asset acquisitions and
exploration.


                                                                               2




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BUILDING LONG-TERM VALUE                                              [OXY LOGO]


     o    Growth tools

          -    Focused strategy

          -    Long-lived assets

          -    Disciplined investment philosophy

          -    Strong balance sheet

          -    Talented workforce

          -    Responsible corporate citizenship


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     Our business model is supported by the tools we believe are necessary to
build and sustain profitable growth. These tools include a focused business
strategy, a long-lived asset base, a disciplined investment philosophy, a strong
balance sheet, a talented work force and a commitment to the principles of
responsible corporate citizenship.


                                                                               3




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FINANCIAL PERFORMANCE CRITERIA                                        [OXY LOGO]


     o    Return on capital employed

     o    Return on equity

     o    Total return to stockholders

          -    Stock price change plus dividend


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     We use a number of financial criteria to measure our overall performance
versus our strategy and objectives - and relative to our competition.

     Return on capital employed is especially important because it measures the
efficient use of capital, which is critical to building long-term value.

     Return on equity is a measure of the profitability of a business as a
percentage of stockholders' equity.

     However, in the final analysis, the most significant measure is the total
return to stockholders, which includes stock price change plus dividends over
multiple years.

     Our goal is to be in the top quartile in each of these criteria in our
industry.

     Let's look first at return on capital employed.


                                                                               4




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RETURN ON CAPITAL EMPLOYED                                            [OXY LOGO]


               Oxy's Ranking Within Oil & Gas Industry: 2000-2003

       [the following is a tabular representation of graphical materials]

                2000           2001           2002           2003
             ----------     ----------     ----------     ----------
                  1              1              1              1
                  2             OXY            OXY            OXY
                 OXY             3              3              3
                  4              4              4              4
                  5              5              5              5
                  6              6              6              6
                  7              7              7              7
                  8              8              8              8
                  9              9              9              9
                 10             10             10             10
                 11             11             11             11
                 12             12             12             12
                 13             13             13             13


     * Based on rolling three-year averages versus 12 large-cap competitors


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     No company can be successful in building long-term value if it does not get
good returns on its invested capital.

     This slide shows our ranking in return on capital employed compared to 12
other large-cap oil and gas companies - based on rolling three-year average
returns. Since 2000, our return on capital has been in the top quartile.


                                                                               5




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RETURN ON CAPITAL EMPLOYED                                            [OXY LOGO]


                               2001-2003 Average
                                  (Percentage)

       [the following is a tabular representation of graphical materials]

                          STOCK             RETURN ON
                         SYMBOL         CAPITAL EMPLOYED
                       ----------     --------------------
                           XOM                18.2
                           OXY                12.6
                           APA                11.5
                           BR                 10.7
                           BP                 10.2
                           UCL                 9.4
                           CVX                 8.7
                           MRO                 8.3
                           DVN                 6.5
                           AHC                 6.3
                           APC                 6.1
                           COP                 5.8
                           KMG                 3.1


     Total 2001-2003 income before interest expense divided by average
     capital employed (average debt plus equity); interest is added back
     after-tax (using 35% statutory rate, not effective rate). See Addendum
     for GAAP reconciliation.


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     For the period 2001 through 2003, our return of 12.6 percent was in the top
quartile, and is 30 percent higher than the industry average of 8.8 percent.


                                                                               6




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RETURN ON EQUITY                                                      [OXY LOGO]


               Oxy's Ranking Within Oil & Gas Industry: 2000-2003

       [the following is a tabular representation of graphical materials]

                2000           2001           2002           2003
             ----------     ----------     ----------     ----------
                 OXY            OXY            OXY             1
                  2              2              2             OXY
                  3              3              3              3
                  4              4              4              4
                  5              5              5              5
                  6              6              6              6
                  7              7              7              7
                  8              8              8              8
                  9              9              9              9
                 10             10             10             10
                 11             11             11             11
                 12             12             12             12
                 13             13             13             13


     * Based on rolling three-year averages versus 12 large-cap competitors


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     We focus on generating consistently high returns on equity because this
drives superior shareholder returns.

     This slide shows where we ranked in return on equity compared with 12 other
large-cap oil and gas companies - based on rolling three-year average returns.

     As you can see, we have clearly achieved our objective of top quartile
performance over the last four years.


                                                                               7




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RETURN ON EQUITY                                                      [OXY LOGO]


                               2001-2003 Average
                                  (Percentage)

       [the following is a tabular representation of graphical materials]

                               STOCK         RETURN
                              SYMBOL        ON EQUITY
                            ----------     ----------
                                XOM           20.3
                                OXY           18.5
                                BR            17.2
                                APA           15.4
                                UCL           15.2
                                MRO           12.4
                                BP            12.3
                                CVX           11.4
                                DVN           10.1
                                AHC            9.2
                                APC            8.9
                                COP            7.8
                                KMG            2.6


     Income applicable to common shares in 2001-2003 divided by average
     equity during the year - per SEC filings.


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     We're pleased that our three-year average return on equity of 18.5 percent
for the period 2001 through 2003 also was in the top quartile. The average for
our competitors was 11.9 percent.


                                                                               8




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COMPARATIVE TOTAL RETURNS                                             [OXY LOGO]


                         3 Years (10/31/01 - 10/31/04)*
                                   (Percent)

       [the following is a tabular representation of graphical materials]


                        STOCK           TOTAL
                       SYMBOL          RETURNS
                     ----------      ----------
                       OXY              141.3
                       APA              132.5
                       BR               130.8
                       DVN               95.9
                       COP               65.0
                       MRO               53.2
                       AHC                45.6
                       UCL               39.4
                       XOM               34.6
                       BP                34.2
                       CVX               33.6
                       APC               21.2
                       DJIA              17.8
                       KMG               14.8
                       S&P 500           12.3


*Data Source: Bloomberg


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     Our total return of 141 percent from October thirty-first, 2001 through
October thirty-first, 2004 was best in class among large cap oil and gas
companies. As you can see from the red columns on the right side of the graph,
we also substantially outperformed both the Dow and the S&P 500.

     These returns are based on the assumption that all dividends were
reinvested and the stock was held for the entire three-year period.

     Our performance is directly linked to the disciplined execution of our
strategy for building long-term value.


                                                                               9




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OVERALL VALUE CREATION STRATEGY                                       [OXY LOGO]

     o    Focus on three core geographic areas

     o    Maximize free cash flow

     o    Maintain strong balance sheet

     o    Review dividend policy annually


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     Our strategy to create value is focused on our core oil and gas areas in
the United States, the Middle East and Latin America.

     Our ability to generate a rising stream of free cash flow enables us to:
invest in new projects, reduce debt and support dividend growth. Our primary
sources of free cash flow are our domestic oil and gas and chemical businesses.

     We are committed to maintaining a strong balance sheet to reduce the risk
for investors and provide the company with the financial strength and
flexibility to compete for new business.

     We will continue to review our dividend policy annually as part of our
commitment to build long-term value for our stockholders.


                                                                              10




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WORLDWIDE PRODUCTION                                                  [OXY LOGO]


                                  Million BOE

                                                [the following is a tabular
                                                representation of graphical
                                                         materials]
                - Qatar -
                 [photo]                                     WORLDWIDE
                                                    YEAR    PRODUCTION
                                                    ----    ----------
                                                    2000        168
                                                    2001        173
                                                    2002        188
                                                    2003        200


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     This chart shows that our oil and gas production has grown at an average
annual rate of approximately 6 percent from 2000 through 2003.


                                                                              11



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PRODUCTION REPLACEMENT                                                [OXY LOGO]


                                   Percentage

                                                [the following is a tabular
                                                representation of graphical
                                                         materials]
       - Kern County, California -
                 [photo]                                          PRODUCTION
                                                   YEAR          REPLACEMENT
                                              --------------     -----------
                                              2001                  141%
                                              2002                  140%
                                              2003                  184%
                                              3-Year Average        156%


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     For a variety of reasons, production replacement rates can vary
significantly from year-to-year. That's why three-year average replacement rates
are a more meaningful measure of how well a company is doing in replacing its
production.

     In our case, the three year weighted average replacement rate for 2001
through 2003 was 156 percent.


                                                                              12




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WORLDWIDE PROVEN RESERVES                                             [OXY LOGO]


                                  Million BOE

       [the following is a tabular
       representation of graphical
                materials]

                  2001     2002     2003             - Horn Mountain -
                 ------   ------   ------
US                1,698    1,755    1,805                [photo]
International       543      556      666
                 ------   ------   ------
Total             2.241    2,311    2,471


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     Our proved oil and gas reserves have risen to new historical highs in each
of the last three years.

     Domestic reserves, shown in yellow, accounted for more than 70 percent of
our worldwide total during this period. The predominance of a large, low-risk
domestic base provides a solid portfolio to generate the free cash flow needed
to support future growth opportunities.


                                                                              13




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FINDING & DEVELOPMENT COSTS*                                          [OXY LOGO]


                               2001-2003 Average
                                  All Sources
                                    ($/BOE)

       [the following is a tabular representation of graphical materials]

                          STOCK             FINDING &
                         SYMBOL         DEVELOPMENT COSTS
                       ----------     --------------------
                           BP                  4.09
                           OXY                 4.53
                           CVX                 5.16
                           XOM                 5.36
                           COP                 5.57
                           APA                 6.20
                           BR                  7.31
                           UCL                 7.48
                           MRO                 7.56
                           APC                 8.44
                           KMG                 8.74
                           DVN                 9.26
                           AHC                12.91


Total 2001-2003 exploration plus development costs incurred divided by reserves
additions, including purchased reserves - per SEC filings.


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     As you can see, Occidental's average replacement costs for 2001 through
2003 put us in the top quartile.


                                                                              14




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2001-2003 AVERAGE PROFITABILITY*                                      [OXY LOGO]

                                     $/BOE

       [the following is a tabular representation of graphical materials]

                            STOCK           AVERAGE
                           SYMBOL        PROFITABILITY
                         ----------     ---------------
                             OXY              9.33
                             APA              7.14
                             XOM              6.52
                             BR               6.13
                             MRO              5.87
                             COP              5.66
                             CVX              5.50
                             BP               5.44
                             APC              4.74
                             UCL              4.69
                             DVN              4.50
                             KMG              2.88
                             AHC              2.69


* Exploration & production income after taxes and before interest, divided by
BOE sales.


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     Our industry-leading profit of $9.33 per BOE for 2001 through 2003 is more
than 80 percent higher than the average among our competition.

     This performance measure speaks to both the quality of our assets and the
efficiency of our operations. Above all, it demonstrates the durability of both
our business model and our strategy to deliver sustainable results.

     Top quartile profits per barrel are closely linked to top quartile returns
on capital employed and returns on equity.


                                                                              15




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2001-2003 AVERAGE FREE CASH FLOW*                                     [OXY LOGO]


                                     $/BOE

       [the following is a tabular representation of graphical materials]

                            STOCK           AVERAGE
                           SYMBOL        FREE CASH FLOW
                         ----------     ---------------
                             OXY              8.83
                             BR               6.06
                             MRO              5.32
                             APA              5.15
                             XOM              4.86
                             CVX              4.27
                             BP               4.01
                             AHC              3.84
                             DVN              3.82
                             COP              3.38
                             UCL              3.05
                             KMG              2.76
                             APC              0.89


* Exploration & production income after taxes and before interest, plus DD&A,
plus exploration expense, less capital (exlucing acquisitions), divided by BOE
sales.  See Addendum for GAAP reconciliation.


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     Our free cash flow per barrel, which is net of capital expenditures, shows
a high correlation with our profitability and is indicative of our moderate
production decline rate. From 2001 through 2003, Occidental's free cash flow per
barrel of $8.83 led the industry - and was more than double the industry average
of $3.95 per barrel.

     Our ability to produce top quartile free cash flow gives us the flexibility
and financial leverage to compete successfully for new high potential investment
opportunities to build long-term value.


                                                                              16



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CHEMICAL HIGHLIGHTS                                                   [OXY LOGO]


     o    Strategic acquisition

     o    Strong chlorine, caustic soda and PVC markets

     o    Strong 2004 free cash flow


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     Last month we announced our plans to purchase three chlor-alkali plants
from Vulcan. The acquisition would increase our capacity for chlorine and
caustic soda by approximately 26 percent and for EDC by about 21 percent.

     When completed this acquisition would be accretive to earnings.

     Our chemical business is having an outstanding year. The chlorine and
caustic soda supply/demand balance is tight and we have been able to expand our
margins over the last six months.

     The strong performance of our chemical business over the first nine months
of this year keeps us on track to generate annual free cash flow in excess of
our target of $300 million for the year.


                                                                              17




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TOTAL DEBT & EQUITY                                                   [OXY LOGO]


          Total Debt - $ Millions                Total Equity - $ Millions

       [the following is a tabular              [the following is a tabular
       representation of graphical              representation of graphical
                materials]                               materials]

                           DEBT/CAP -
    YEAR       DEBT        PERCENTAGE               YEAR        EQUITY
   ------     ------     --------------            ------      --------
    2000       6,354                57%             2000          4,774
    2001       4,890                46%             2001          5,634
    2002       4,759                43%             2002          6,318
    2003       4,570                37%             2003          7,929
    3Q04       3,933                29%             3Q04          9,778


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     Since 2000, we have improved our financial leverage by strengthening our
balance sheet. Our debt has been substantially reduced and stockholders' equity
has grown dramatically.

     From year-end 2000 through the third quarter this year, we reduced our
total debt by more than $2.4 billion. Our debt-to-capitalization ratio is down
from 57 percent to 29 percent - the lowest level in decades.

     Our success in strengthening our balance sheet resulted in all four credit
agencies upgrading our credit ratings in 2003.

     On August 16, we redeemed $157 million of debt due on March 1, 2005.

     While we have been reducing our debt level since 2000, stockholders' equity
has more than doubled - from $4.8 billion at year-end 2000 to $9.8 billion at
the end of September this year.


                                                                              18



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NON-CORE INVESTMENTS                                                  [OXY LOGO]


                                                                 $ Millions
                                                                  11/11/04
                                                                 ----------

     [LYONDELL LOGO]     41 million shares (23%)                 $    1,040

     [PREMCOR LOGO]       9 million shares (10%)                 $      360
                                                                 ----------

                                                                 $    1,400


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     The financial flexibility we've achieved by de-leveraging our balance sheet
could be further enhanced by monetizing our two non-core equity investments.

     We currently own approximately 41 million shares of Lyondell Chemical
Company common stock. At the close of business on November eleventh, our
Lyondell shares had a market value in excess of one billion dollars.

     We also have a 10 percent stake in the Premcor refining business. As of
November eleventh, our 9 million Premcor shares had a market value of $360
million.

     The total market value of these non-core investments to Oxy is $1.4
billion.


                                                                              19




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WHAT ABOUT THE FUTURE?                                                [OXY LOGO]


     o    Can Occidental sustain past growth patterns?

          -    Solid foundation for future growth in place

          -    Continued execution of value creating strategy in core oil and
               gas areas

          -    Continued maximizing free cash flow from chemicals


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     Our past success has raised expectations for the future. The primary
interest of investors today is whether we can sustain this pattern of profitable
growth in future years.

     The simple answer is, "yes". Our strong past performance has laid a solid
foundation for building long-term value.

     We are continuing to execute our strategy of creating value through a
combination of enhanced oil recovery projects, acquisitions, and exploration in
our core oil and gas business. At the same time we are maximizing free cash flow
from our chemicals business.


                                                                              20




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MIDDLE EAST - NEW PROJECTS                                            [OXY LOGO]


                            [map of Dolphin Project]

                                    Dolphin
          Oxy's Interest ....................................... 24.5%
          Oxy's Cumulative Net Production (25 yrs) ........ 300 MM BOE
          Oxy's Net Production Estimate ............... 65,000 BOE/Day


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     Turning to oil and gas projects, let me provide you with an overview of the
$4 billion Dolphin Project, which is the single largest trans-border energy
project in the Middle East.

     We have a 24.5-percent stake in this project. The project includes the
development of offshore gas reserves in Qatar's giant North Field. The produced
gas will be processed at Ras Laffan to remove the natural gas liquids for sale
at market prices. Approximately 2 billion cubic feet per day of dry gas will be
transported through a new 48-inch, 260-mile-long pipeline to supply growing
power and water desalination markets in the United Arab Emirates.


                                                                              21




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DOLPHIN PROJECT - NET PRODUCTION                                      [OXY LOGO]


                             Projected Start - 2006



                                                  o    Invest $1 billion in
                                                       this $4 billion
                                                       project (2004-2006)
                                                  o    Peak net production
                                                       -    275 million cubic
          [map of Dolphin Project]                          feet/day
                                                       -    20,000 barrels
                                                            liquids/day
                                                       -    Equals 65,000
                                                            BOE/day
                                                  o    25-year cumulative net
                                                       production
                                                       -    1.3 trillion cubic
                                                            feet
                                                       -    85 million barrels
                                                            liquids
                                                       -    Totals 300 million
                                                            BOE


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     Occidental's share of the capital for this project is approximately one
billion dollars over the next three years. We may finance a portion.

     The project is expected to begin operations in late 2006, and when it's
fully operational, we anticipate our net production to be about 275 million
cubic feet of gas per day and 20,000 barrels of liquids per day.

     Over the 25-year life of the project, our cumulative production is
estimated to be approximately 1.3 trillion cubic feet of gas and 85 million
barrels of liquids.

     The project is moving forward on schedule. Two offshore platforms will be
installed by the end of the year. When those installations are complete, two
drilling rigs are scheduled to begin a 12-well drilling program for each
platform.

     Plans call for construction of the Ras Laffan gas plant to begin in
December and for the pipeline contractor to begin laying the sub-sea pipeline
system in the Spring of 2005.


                                                                              22



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OMAN - NEW GAS PROJECT                                                [OXY LOGO]


                                 [map of Oman]


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     In Oman, we have a new natural gas project that came on stream this year.
The project is supplying gas associated with oil production from our Block 9
operations through a new pipeline and processing facilities to the Fujairah
power plant in the United Arab Emirates.

     Occidental's sale agreement calls for the delivery of 120 million gross
cubic feet per day. Occidental's share is 78 million cubic feet per day.

     The installed facilities are capable of handling 150 million cubic feet per
day. Occidental expects to make available additional sales volumes up to the
maximum capacity.

     Occidental's net production from this project averaged 88 million cubic
feet per day in the third quarter and 52 million cubic feet per day through nine
months.


                                                                              23




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LIBYA - OXY PRODUCING ACREAGE                                         [OXY LOGO]


                                 [map of Libya]


- --------------------------------------------------------------------------------



     The recent improvement in US-Libya relations has made Libya one of the
hottest areas in the international petroleum sector.

     Most of you are no doubt aware that Occidental was a major player in
Libya's oil industry until 1986 when the Reagan administration imposed economic
sanctions. Now that sanctions have been lifted, we look forward to returning to
Libya - and the Libyans have made it clear that they would like us to return.

     Through the sanctions era, we retained our contractual rights to multiple
producing and exploration properties. The producing properties include an
approximately 37 percent interest in Concessions 102 and 103, shown in orange as
well as an approximately 14 percent interest in EPSA 1 properties, shown in
blue.

     We are actively engaged in negotiations with Libyan officials to establish
the terms and conditions of our return. We are making good progress, but it
takes time to iron out all the details after an absence of 18 years.


                                                                              24




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EXPLORATION PROPERTIES                                                [OXY LOGO]


                                 [map of Libya]


- --------------------------------------------------------------------------------



     In addition to the interests in the producing properties I just discussed
that are shown here in red, we also have exploration rights in 4 blocks, shown
in yellow. Occidental has a 100 percent working interest in these 4 exploration
blocks that encompass more than 44,000 square kilometers.

     While our existing contractual rights will serve as the foundation for our
return, we see significant opportunities - both for us and the Libyans - for an
expansion of our presence beyond the current contracts.

     The blue blocks show the exploration areas that are included in the current
bid round. We are evaluating these blocks and we plan to be active in the
bidding process in January next year.


                                                                              25




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HORN MOUNTAIN                                                         [OXY LOGO]


                             [map of Horn Mountain]


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     In the U.S., the Horn Mountain operation is the result of a successful
exploration project in the deepwater Gulf of Mexico. Oxy has a 33 percent
interest in Horn Mountain.

     The operation was shut down for six weeks due to damage to the pipeline
system by Hurricane Ivan. The offshore facilities withstood the storm with no
major damage and production resumed at the end of October.

     During the second quarter this year, which was the last full quarter prior
to Ivan, Occidental's share of Horn Mountain production averaged more than
20,000 BOE per day.


                                                                              26




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NINE MONTHS 2004 RESULTS                                              [OXY LOGO]


     o    Consolidated Results

          -    Net income ($/Billions) -------------------------- $1.8

          -    Core earnings per share ($/Share) --------------- $4.60

          -    Cash from operations ($/Billions) ---------------- $2.7

          -    Stockholders' equity ($/Billions) ---------------- $9.8

          -    Oil & Gas Production ----------------------- 569 MBOE/D


- --------------------------------------------------------------------------------



     As our business development team focuses on new opportunities for building
profitable long-term growth, our operations are producing strong near- term
results.

     As I said earlier, the momentum we developed last year has carried over
into 2004 in a period of robust oil prices, resulting in the highest earnings
for any nine-month period in the company's history.

     Our consolidated core net income for the first nine months this year was
1.8 billion dollars, or $4.60 per share. This was 55 percent higher than in the
first nine months of 2003.

     Cash from operations was approximately 2.7 billion dollars.

     Stockholders' equity increased to a record 9.8 billion dollars.

     Oil and gas production averaged a record 569,000 BOE per day for the nine
months- five percent higher than the comparable period in 2003.


                                                                              27




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DIVIDEND INCREASES                                                    [OXY LOGO]


                                 Annual Payout

       [the following is a tabular representation of graphical materials]


                       2002           2003           2004
                    ----------     ----------     ----------
                      $ 1.00         $ 1.04         $ 1.10


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     Dividends are a key element in building long-term value for stockholders
and Occidental has been paying cash dividends without interruption since 1975.

     The Board of Directors increased the dividend by 6 percent this February.
This increase is on top of last year's increase of 4 percent.

     The Board will review dividend policy annually as part of our continuing
commitment to increase total returns for our shareholders.


                                                                              28



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WHAT'S AHEAD?                                                         [OXY LOGO]


     o    Success riding on two factors

          -    Maintain strong asset base to generate
               cash to support growth

          -    Add new projects in core areas

     o    Stay focused on the fundamentals

          -    Maintain financial discipline and focus

          -    Execute our strategy

     o    Create long-term value


- --------------------------------------------------------------------------------



     The company's future success depends on two factors. First, we must
continue to take care of our asset base to generate the cash that supports our
strategy of building long-term growth. Second, we must continue to add
profitable new projects to our portfolio, like Dolphin. We believe the interests
of our stockholders are best served by remaining focused on these fundamentals.

     Our strength has been our financial discipline and focus in executing our
strategy that balances long-term growth with near term profitability. We think
the investments we are making now will yield profitable growth opportunities and
stockholder value for many years, and we believe the best is yet to come.


                                                                              29




- --------------------------------------------------------------------------------


OCCIDENTAL PETROLEUM CORPORATION                                      [OXY LOGO]


     Statements in this presentation that contain words such as "will" or
     "expect", or otherwise relate to the future, are forward-looking and
     involve risks and uncertainties that could significantly affect
     expected results. Factors that could cause results to differ
     materially include, but are not limited to: 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. Occidental disclaims
     any obligation to update any forward-looking statements.


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                                                                              30




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                                   [OXY LOGO]


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                                                                              31




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                                    ADDENDUM                          [OXY LOGO]


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RETURN ON CAPITAL EMPLOYED (ROCE)                                     [OXY LOGO]


       Reconciliation to Generally Accepted Accounting Principles (GAAP)
                                  ($ Millions)


                                                             Annual Average
                                                               2001-2003
                                                            ---------------
     GAAP measure - earnings applicable
        to common stockholders ------------------------     $         1,223
     Interest Expense ---------------------------------                 323
     Tax effect of interest expense -------------------                (113)
                                                            ---------------
     Earnings before tax-effected interest expense ----     $         1,433
                                                            ===============

     GAAP average stockholders' equity  ---------------     $         6,623

     Average debt
        GAAP debt
          Notes Payable -------------------------------     $            18
          Debt, including current maturities ----------               4,095
        Non-GAAP debt
          Capital lease obligation --------------------                  26
          Subsidiary preferred stock ------------------                  50
          Gas sale agreements -------------------------                  94
          Trust preferred securities ------------------                 457
                                                            ---------------
     Average total debt -------------------------------     $         4,740

     Total average capital employed -------------------     $        11,363

     ROCE ---------------------------------------------               12.6%


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o    Return on capital employed (ROCE) is calculated by dividing earnings
applicable to common shares, before interest expense, by average capital
employed (debt plus equity); interest is added back after-tax (using a 35%
statutory rate, not the effective rate).

o    Occidental management considers ROCE a useful measure because it indicates
the return on all capital, both debt and equity, employed in the business.
Occidental management believes that ROCE is an additional measure of efficiency
when used in conjunction with Return on Equity, which measures the return on
only the shareholders' equity portion of the total capital employed.




- --------------------------------------------------------------------------------


OIL & GAS: FREE CASH FLOW/BOE                                         [OXY LOGO]


       Reconciliation to Generally Accepted Accounting Principles (GAAP)
                                  ($ Millions)


     Occidental Petroleum consolidated                       Annual Average
     statement of cash flow                                    2001-2003
                                                            ---------------
     Cash flow from operating activities --------------     $         2,580
     Cash flow from investing activities --------------              (1,456)
     Cash flow from financing activities --------------                (929)
                                                            ---------------
     Change in cash -----------------------------------     $           195
                                                            ===============


                                                             Annual Average
                                                               2001-2003
                                                            ---------------
     FAS 69 GAAP Oil & Gas results of operations ------     $         1,789
     Depreciation, Depletion & Amortization -----------                 845
     Exploration expense ------------------------------                 166
     Capital expenditures (excluding acquisitions) ----              (1,108)
                                                            ---------------
     Free cash flow from operations -------------------     $         1,692

     Sale volumes (million BOE) -----------------------                 192

     Cash flow per BOE --------------------------------     $          8.83


- --------------------------------------------------------------------------------



o    There is no GAAP free cash flow measure comparable to this calculation;
operating cash flow, investing cash flow, financing cash flow, and change in
cash calculated in accordance with GAAP are presented above for reference.

o    Oxy calculates free cash flow per barrel of oil equivalent (BOE) by taking
the exploration and production income after taxes but before interest, adding
back the depreciation, depletion & amortization and exploration expense, and
subtracting from that amount, total capital expenditures excluding acquisitions.
The result is then divided by the BOE sale volumes.

o    Occidental management believes that free cash flow per BOE is a useful
measure to show the net cash results of the Oil and Gas operation on a per
barrel basis. This measure is useful to compare the performance among companies
of varying sizes.