HONG KONG, Aug. 13 /PRNewswire-Asia/ -- CNOOC Limited (the 'Company' or 'CNOOC Ltd.', NYSE: CEO; SEHK: 0883) announced today that the Company has successfully made a new discovery - Qinhuangdao(QHD)35-4 in Shijiutuo Uplift of Bohai Bay.

(Logo: http://www.prnasia.com/xprn/sa/200701301659.jpg )

New discovery QHD35-4 is located in the south of Shijiutuo Uplift in the north central of Bohai Bay, and about 38 kilometers western of QHD32-6 oilfield.

The Company has drilled wells on this structure before. The discovery well QHD35-4-3 penetrated oil pay zones with total thickness of 21.4 meters and proved QHD35-4 a middle-size oilfield. The well drilled to a total depth of 2,215 meters, with water depth of about 26 meters.

During the drill stem test, the well was tested to flow at an average rate of 1,700 barrels of oil and 400 thousand cubic feet of natural gas per day via 11.11mm choke.

Mr. Zhu Weilin, Executive Vice President of the Company and General Manager of Exploration Department commented, 'New discovery QHD 35-4 is one of discoveries the Company has made around Shijiutuo Uplift. This area is expected to become new growth point of our reserves.'

Notes to Editors:

More information about the Company is available at http://www.cnoocltd.com .

This press release includes 'forward-looking statements' within the meaning of the United States Private Securities Litigation Reform Act of 1995, including statements regarding expected future events, business prospectus or financial results. The words 'believe,' 'intend,' 'expect,' 'anticipate,' 'project,' 'estimate,' 'plan,' 'predict' and similar expressions are intended to identify such forward-looking statements. These statements are based on assumptions and analyses made by us that we believe are reasonable under the circumstances. However, whether actual results and developments will meet our expectations and predictions depend on a number of risks and uncertainties which could cause our actual results, performance and financial condition to differ materially from our expectations. For a description of these and other risks and uncertainties, please see the documents we file from time to time with the United States Securities and Exchange Commission, including our 2007 Annual Report on Form 20-F filed on June 26, 2008.

    For further enquiries, please contact:
     Mr. Xiao Zongwei
     Joint Company Secretary and General Manager
     of Investor Relations Department
     CNOOC Limited
     Tel:   +86-10-8452-1646
     Fax:   +86-10-8452-1441
     Email: xiaozw@cnooc.com.cn
     Ms. Sharon Fung
     Ketchum Newscan Public Relations Ltd
     Tel:   +852-3141-8082
     Fax:   +852-2510-8199
     Email: Sharon.fung@knprhk.com

SOURCE CNOOC Limited