News Release

CNOOC Limited Announces Changes in Directors and Senior Management

HONG KONG, June 15, 2016 /PRNewswire/ -- CNOOC Limited (the "Company", SEHK: 00883, NYSE: CEO, TSX: CNU) today announced changes in directors and senior management of the Company. Mr. Yang Hua has been appointed as CEO and re-designated Executive Director. He remains Chairman of the Company. Mr. Wu Guangqi has been re-designated Non-executive Director and has resigned as Compliance Officer. Mr. Yuan Guangyu has been appointed as President and Executive Director. Mr. Li Fanrong has resigned from his position as CEO, President and Executive Director. Mr. Chen Wei has been appointed as Compliance Officer and General Counsel. The aforementioned changes take effect from June 15, 2016.

After Mr. Li was appointed CEO in 2011, he successfully led the Company in achieving operational targets with his extensive industry experience and forward-looking vision. The Board of Directors would like to express their appreciation and gratitude to Mr. Li Fanrong for his outstanding contributions to the Company over the past few years, and wish Mr. Li all the best in his new position.

Mr. Yang Hua, Chairman and CEO of CNOOC Limited, said, "On behalf of the Board of Directors, I extend a warm welcome to Mr. Yuan Guangyu on his appointment as President and Executive Director. Together with Mr. Yuan and the management, I will lead the Company to proactively tackle the challenges of low oil prices, adjust our development concept in a timely manner, and promote the Company's sustainable development to create greater value for our shareholders."

Mr. Yang Hua

Born in 1961, Mr. Yang is a professor-level senior economist and graduated from China University of Petroleum with a B.S. degree in petroleum engineering. He also received an MBA degree from the Sloan School of Management at MIT as a Sloan Fellow. Mr. Yang joined China National Offshore Oil Corporation ("CNOOC") in 1982 and has over 30 years of experience in petroleum exploration and production. From 1982 to 1992, Mr. Yang served in a number of positions in CNOOC Research Center including the Director of Field Development Department, the Manager of Reservoir Engineering Department and the Project Manager. Thereafter, Mr. Yang was mainly involved in international business, M&A, corporate finance and capital market operations. From 1993 to 1999, he served as the Deputy Chief Geologist, the Deputy Director and the Acting Director for Overseas Development Department of CNOOC and the Vice President of CNOOC International Limited. From 1999 to 2011, Mr. Yang served in a number of positions in the Company including Senior Vice President, Chief Financial Officer, Executive Vice President, President and Chief Executive Officer. Mr. Yang also served as an Assistant President of CNOOC from November 2006 to April 2010 and as Vice President of CNOOC from April 2010 to August 2011. Mr. Yang served as Director and President of CNOOC from August 2011 to April 2015. He was appointed as Chairman of CNOOC in April 2015. In addition, he serves as Chairman and Director of CNOOC China Limited, being a subsidiary of the Company. He also served as Chairman, Director and President of CNOOC Southeast Asia Limited, General Manager of CNOOC China Limited and Chairman and Director of CNOOC International Limited, all being subsidiaries of the Company. He also served as Director of CNOOC Finance Corporation Limited, a subsidiary of CNOOC. Mr. Yang was appointed as an Executive Director of the Company with effect from 31 August 2005 and was the Vice Chairman of the Board of the Company from 16 September 2010 to 19 May 2015, and was re-designated from an Executive Director to a Non-Executive Director of the Company with effect from 23 November 2011. Mr. Yang was appointed as Chairman of the Board and Chairman of the Nomination Committee of the Company with effect from 19 May 2015. Mr. Yang has been re-designated from a Non-executive Director to an Executive Director and appointed as the Chief Executive Officer of the Company with effect from 15 June 2016.

Mr. Wu Guangqi

Born in 1957, Mr. Wu is a geologist, professor-level senior economist, Certified Senior Enterprise Risk Manager and Certified Internal Auditor and graduated with a B.S. degree from the Ocean University of China, majoring in Marine Geology. He also holds a master degree in Management from China University of Petroleum and a doctor degree in Management from Huazhong University of Science and Technology. Mr. Wu joined CNOOC in 1982. From 1994 to 2001, he served as the Deputy General Manager of CNOOC Oil Technical Services Company, a subsidiary of CNOOC, the Director of the Administration Department of CNOOC and the Director of the Ideology Affairs Department of CNOOC successively. Mr. Wu was appointed as an Assistant President of CNOOC in 2003, and has been the Vice President of CNOOC since 2004. Mr. Wu also serves as the Vice Chairman of China Association of Risk Professionals, the Vice Chairman of China Association of Oceanic Engineering, the Director-General of National Energy Deepwater Oil & Gas Engineering Technology Research Centre Council and the Chairman of CNOOC Marine Environment and Ecology Protection Foundation. Mr. Wu served as an Independent Non-executive Director of China Yangtze Power Limited, a company listed on the Shanghai Stock Exchange, from May 2003 to July 2010. Mr. Wu has served as the Compliance Officer of the Company since 1 June 2005 and he also serves as a Director of CNOOC China Limited and CNOOC International Limited, all being the subsidiaries of the Company. Mr. Wu was appointed as an Executive Director of the Company with effect from 1 June 2005. Mr. Wu has been re-designated from an Executive Director to a Non-executive Director of the Company and has resigned as the Compliance Officer of the Company with effect from 15 June 2016.

Mr. Yuan Guangyu

Born in 1959, Mr. Yuan is a professor-level senior engineer. He graduated from China University of Petroleum with a bachelor's degree in drilling engineering. He graduated from the EMBA program of China Europe International Business School in 2007 with an MBA degree. Mr. Yuan joined CNOOC in 1982 and has over 30 years of experience in the oil and gas industry. From February 1993 to October 2001, Mr. Yuan served as Deputy Manager of CNOOC Bohai Drilling Company, Deputy General Manager of CNOOC China Offshore Oil Northern Drilling Company, Deputy General Manager of the Operational Department of CNOOC, General Manager of CNOOC China Offshore Oil Northern Drilling Company. From October 2001 to February 2009, Mr. Yuan served as President of CNOOC Services, and Chairman of the Board of Directors, Chief Executive Officer and President of China Oilfield Services Limited. In November 2006, Mr. Yuan was appointed as the Assistant President of CNOOC. In February 2009, Mr. Yuan was appointed as the Executive Vice President of the Company. In April 2013, Mr. Yuan was appointed as Director of Bohai Petroleum Administrative Bureau of CNOOC and General Manager of CNOOC China Limited Tianjian Branch. Mr. Yuan also serves as the Director of CNOOC China Limited and CNOOC International Limited, both subsidiaries of the Company. Mr. Yuan has been appointed as an Executive Director and President of the Company with effect from 15 June 2016.

Mr. Chen Wei

Please refer to the Company's 2015 annual report for Mr. Chen's biographical details.

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 Annual Report on Form 20-F filed in April of the latest fiscal year.

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: mr@cnooc.com.cn

Ms. Ada Leung
Hill+Knowlton Strategies Asia
Tel: +852-2894-6225
Fax: +852-2576-1990
Email: ada.leung@hkstrategies.com

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SOURCE CNOOC Limited