Exhibit 99

        Anadarko Acquires Gulf of Mexico Shelf Properties from
                 Amerada Hess, High Grades Portfolio

    HOUSTON--(BUSINESS WIRE)--June 9, 2003--Anadarko Petroleum
Corporation (NYSE:APC) today announced it has acquired the majority of
Gulf of Mexico shelf properties of Amerada Hess Corporation (NYSE:AHC)
for approximately $225 million, after customary closing adjustments.
    The 26 acquired fields have estimated proved reserves of nearly 23
million barrels of oil equivalent (BOE), of which about 60 percent is
natural gas. Approximately $190 million of the purchase price was
allocated to the proved reserves; the remainder was attributed to
unproven potential that will be evaluated over the next several years.
Current daily net production is 4,000 barrels of oil and 57 million
cubic feet of natural gas. The acquisition is expected to add about
2.5 million BOE to the company's 2003 volumes.
    "These are high quality assets with excellent profit margins and a
lot of upside," said Anadarko Chairman, President and CEO Robert J.
Allison, Jr. "There's considerable opportunity for reserve additions
and production growth on these properties."
    The company has identified more than 50 development opportunities
including production enhancements, recompletions and low risk
development wells, and as many as 10 exploration prospects that can be
drilled over the next few years. The identified exploration prospects
are located in high potential deep shelf gas plays, which Anadarko has
been pursuing.
    More than 60 percent of the reserves are concentrated within three
fields: South Timbalier blocks 172 and 190/205/206 and South Pass 89.
    "The key producing fields lie within our active fairway, which
means we expect to benefit from operational efficiencies," Allison
said.
    "And we've hedged the current production with costless collars
providing a minimum cash margin of $21 per BOE over the next two
years," he said.
    Cash flow from the properties for the remainder of 2003 is
projected to be $75 million, generating a cash margin of more than $29
per BOE based on the current NYMEX forward curve for oil and gas
prices.
    The company funded the acquisition with available cash and credit
facilities.

    Divestitures

    Anadarko intends to sell about $100 million in total properties
this year, excluding $40 million of assets in New Mexico that the
company sold in the first quarter. Additional asset sales intended for
closing prior to year end include about 20 properties in West Texas
and 40 to 50 properties in the Gulf of Mexico, amounting to up to
400,000 BOE in 2003 volumes.
    "Our aim is to focus on our key assets and reduce costs," Allison
said. "At the end of the year, we expect to have fewer Gulf of Mexico
fields but higher margins. This is an ongoing strategy that has
allowed us to high-grade our portfolio, increase cash margins per
barrel and add growth potential."
    Anadarko Petroleum Corporation is one of the world's largest
independent oil and gas exploration and production companies.
Houston-based Anadarko is active in the U.S., Canada, Algeria,
Venezuela and Qatar and is executing strategic exploration programs in
several other countries. More information is available at
www.anadarko.com .

    NOTE: A map will be available on the Internet at www.anadarko.com.

    This news release contains forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933 and Section 21E
of the Securities and Exchange Act of 1934. Anadarko believes that its
expectations are based on reasonable assumptions. No assurance,
however, can be given that its goals will be achieved. A number of
factors could cause actual results to differ materially from the
projections, anticipated results or other expectations expressed in
this release. While Anadarko makes these forward-looking statements in
good faith, neither Anadarko nor its management can guarantee that the
anticipated future results will be achieved. Anadarko discloses proved
reserves that comply with the Securities and Exchange Commission's
(SEC) definitions. Additionally, Anadarko may disclose estimated
recoverable reserves, which the SEC guidelines do not allow us to
include in filings with the SEC. See Additional Factors Affecting
Business in the Management's Discussion and Analysis included in the
company's 2002 Annual Report on Form 10-K.

    CONTACT: Anadarko Petroleum Corporation
             Media Contacts:
             Lee Warren, 832/636-3321
             lee_warren@anadarko.com
             or
             Anne Vincent, 832/636-8368
             anne_vincent@anadarko.com
             or
             Investor Contacts:
             Paul Taylor, 832/636-3471
             paul_taylor@anadarko.com
             or
             David Larson, 832/636-3265
             david_larson@anadarko.com
             or
             Stewart Lawrence, 832/636-3326
             stewart_lawrence@anadarko.com