CNOOC Limited Brings On-stream Dongfang 1-1 Gas Field 13-3 Block Development Project

HONG KONG, July 29, 2025 /PRNewswire/ -- CNOOC Limited (the "Company", SEHK: 00883 (HKD Counter) and 80883 (RMB Counter), SSE: 600938) announces today that Dongfang 1-1 Gas Field 13-3 Block Development Project has commenced production.

The project is the first high-temperature, high-pressure, low-permeability natural gas project offshore China. It is located in the Yinggehai Basin, with an average water depth of approximately 67 meters. The main production facility is a new unmanned wellhead platform and it utilizes the existing processing facilities of the Dongfang gas fields for development. A total of 6 development wells are planned to be commissioned. The project is expected to achieve a peak production of approximately 35 million cubic feet of natural gas per day in 2026.

The existing facilities are used to connect the Dongfang 1-1 gas field and Dongfang 13-2 gas field. CNOOC Limited has thereby successfully established an integrated offshore gas production network in the Yinggehai Basin. It will facilitate the stable and reliable supply of natural gas in the region, providing strong support for the economic and social development of Guangdong, Hong Kong, and Hainan.

CNOOC Limited holds 100% interest in this project and is the operator.

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Notes to Editors:

More information about the Company is available at .

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This press release 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 environmental 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 and regulations.

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.

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For further enquiries, please contact:

Ms. Cui Liu
Media & Public Relations
CNOOC Limited
Tel: +86-10-8452-6641
Fax: +86-10-8452-1441
E-mail:

Mr. Cheng Yao
Ever Bloom (HK) Communications Consultants Group Limited
Tel: +852 5540 0725
Fax: +852 2111 1103
Email: