BZ28-2S Oilfields Back to Full Production

HONG KONG, July 25, 2011 /PRNewswire-Asia/ -- CNOOC Limited (the "Company", NYSE: CEO, SEHK: 00883) announced today that, BoZhong 28-2 South ("BZ 28-2S") oilfields which suspended operation in this April due to a malfunction occurred on the Single Point Mooring System, has restarted production.

Currently the operation in BZ 28-2S oilfields is running smoothly. The production capacity of the oil fields has recovered to the level before the incident, reaching approximately 39,000 barrels of oil per day.

In April 2011, due to rough sea conditions, a malfunction occurred on the single point mooring system of the Floating, Production, Storage and Offloading (FPSO) vessel "Haiyangshiyou 102" serving in BZ 28-2S oilfields. Operations were immediately shut down at the oilfields.

After the incident, the Company worked out a recovery plan of the oilfields and implemented it in a timely manner.

BZ 28-2S oilfields, located in Bohai Bay, are composed of four fields, including BZ 28-2 S, BZ 28-2 SN, BZ 34-1N and BZ 29-4. The Company owns 100% interest of the oilfields and acts as the operator.

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 of1995, 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 analysis made by the Company in light of its experience and perception of historical trends, current conditions and expected future developments, as well as other factors that the Company believes reasonable under the circumstances. However, whether actual results and developments will meet the Company's expectations and predictions depends on a number of risks and uncertainties which could cause the actual results, performance and financial conditions to differ materially from the Company's expectations, including those associated with fluctuations in crude oil and natural gas prices, the exploration or development activities, the capital expenditure requirements, the business strategy, 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 has filed from time to time with the United States Securities and Exchange Commission, including 2010 Annual Report on Form 20-F filed on April 29, 2011.

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