Caofeidian 6-4 Confirmed to be a Mid-sized Oilfield

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Oct 22, 2015, 05:00 ET

HONG KONG, Oct. 22, 2015 /PRNewswire/ -- CNOOC Limited (the "Company", NYSE: CEO, SEHK: 00883, TSX: CNU) announced that Caofeidian 6-4 oil structure in Bohai discovered in 2014 was appraised successfully and confirmed to be a mid-sized oilfield.

The Caofeidian 6-4 structure is located in the western part of Shijutuo Uplift in the west of Bohai with an average water depth of about 20 meters. The discovery well Caofeidian 6-4-1 was drilled and completed at a depth of about 3,100 meters and encountered oil pay zones with a total thickness of about 180 meters. The well produces light crude oil and production was tested around 5,750 barrels per day. Caofeidian 6-4-1 has set three records in the west of Bohai exploration area in achieving maximum cumulative thickness and maximum single pay thickness of oil pay zones, as well as highest test production in Paleogene clastic rocks.

The successful appraisal of Caofeidian 6-4 structure not only represents a significant breakthrough after several years of exploration in the west of Bohai, but also provides important guidance in oil and gas exploration in similar areas. In addition, it also helps ensure reserves and production growth in Bohai.

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 "expect", "anticipate", "continue", "estimate", "objective", "ongoing", "may", "will", "project", "should", "believe", "plans", "intends" and similar expressions are intended to identify such forward-looking statements. These statements are based on assumptions and analyses made by the Company in light of its experience and its perception of historical trends, current conditions and expected future developments, as well as other factors the Company believes are appropriate under the circumstances. However, whether actual results and developments will meet the expectations and predictions of the Company depends on a number of risks and uncertainties which could cause the actual results, performance and financial condition to differ materially from the Company's expectations, including but not limited to those associated with fluctuations in crude oil and natural gas prices, the exploration or development activities, the capital expenditure requirements, the business strategy, whether the transactions entered into by the Group can complete on schedule pursuant to their terms and timetable or at all, the highly competitive nature of the oil and natural gas industries, the foreign operations, environmental liabilities and compliance requirements, and economic and political conditions in the People's Republic of China. For a description of these and other risks and uncertainties, please see the documents the Company files from time to time with the United States Securities and Exchange Commission, including the 2014 Annual Report on Form 20-F filed on 22 April 2015.

Consequently, all of the forward-looking statements made in this press release are qualified by these cautionary statements. The Company cannot assure that the results or developments anticipated will be realised or, even if substantially realised, that they will have the expected effect on the Company, its business or operations.

For further enquiries, please contact:

Ms. Michelle Zhang
Deputy Manager, Media / Public Relations
CNOOC Limited
Tel: +86-10-8452-6642
Fax: +86-10-8452-1441
E-mail: [email protected]

Ms. Cathy Zhang
Hill+Knowlton Strategies Asia
Tel: +852-2894-6211
Fax: +852-2576-1990
E-mail: [email protected]

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SOURCE CNOOC Limited