CNOOC : 2022 Mid-Year Review

Board of Directors and Management at Today's Conference

Joint Company Secretary

Wu Xiaonan

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Disclaimer

This presentation includes forward looking information, including statements regarding the likely future developments in the business of the Company and its subsidiaries, such as expected future events, business prospects 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 as of this date in light of its experience and its perception of historical trends, current conditions and expected future developments, as well as other factors that the Company currently believes are appropriate under the circumstances. However, whether actual results and developments will meet the current expectations and predictions of the Company is uncertain. Actual results, performance and financial condition may differ materially from the Company's expectations, including but not limited to those associated with macro-political and economic factors, fluctuations in crude oil and natural gas prices, the highly competitive nature of the oil and natural gas industry, climate change and environment policies, the Company's price forecast, mergers, acquisitions and divestments activities, HSSE and insurance policies and changes in anti-corruption,anti-fraud, anti- money laundering and corporate governance laws.

Consequently, all of the forward-looking statements made in this presentation 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.

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A-Share IPO

• On April 21, CNOOC Limited was listed on the main board of Shanghai Stock Exchange and successfully completed its first RMB share issuance
• The IPO will broaden the financing channels for its sustainable development while adding high- quality investment target to domestic capital market

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Agenda

• Operating Results
• Business Highlights
• Outlook

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