Environmental Protection

As a responsible company, CNOOC Limited views lucid water and lush mountainous areas as invaluable assets. We have responded to climate change challenges by implementing the goal to have CO2 emissions peak before 2030 and achieve carbon neutrality before 2060. We have started the composition of the action plan for that goal and fully implemented our green and low-carbon development strategy through clean energy development, energy-saving and emission reduction projects and efficient energy utilization, fully committed to being a resource-saving green company.

Response to Climate Change

Adhering to the principle that lucid waters and lush mountains are invaluable assets, we have actively responded to climate change challenges by implementing the strategic goals and requirements of carbon peaking and carbon neutrality in the countries where the assets are located. We have formulated and released the Energy Conservation and Carbon Reduction Action Plan and fully implemented our green and low-carbon development strategy through clean energy development, energy-saving and emission reduction projects and efficient energy utilization, being fully committed to becoming a resource-saving green company.

Risk Assessment

CNOOC Limited supports the climate goals set in the Paris Agreement and fully understands the impact of climate change on the Company. We are working to meet this challenge by identifying and analyzing the risks and opportunities brought about by climate change and formulating appropriate measures in response.

CNG refers to compressed natural gas; LNG refers to liquefied natural gas

Energy Conservation

The Company is committed to the principle of clean production, using harmless raw materials, waste recycling, and using low-carbon energy. We support these principles by continuously promoting the construction of a green manufacturing system.

In 2022, the Company vigorously conducted strict energy-saving and carbon emission assessments on new projects to control energy consumption at the source. We continued to promote the construction of on shore power projects for offshore oil and gas fields, the recycling of associated gas, and the application of technologies such as oilfield power networking, residue heat utilization, and renovation of key energy-consuming equipment. The Company implemented over 50 energy-saving transformation projects this year, invested RMB360 million and reduced energy consumption by 275,700 tons of standard coal equivalent and greenhouse gas emissions by 596,600 tons of carbon dioxide.

Energy Saving Target: In 2023, it is expected to save 234,300 tons of standard coal by implementing onshore power replacement, offshore oil and gas production platform power networking, permanent magnet pump use and flare gas recycling.

Main Energy Consumption of the Company

Indicator

Unit

2020

2021

2022

Crud oil

Thousand tons

387.0

343.2

259.3

Naturl Gas

Billion cubic meters

2.228

2.469

2.582

Diesel

Thousand tons

58.0

57.1

51.5

Electricity

Million keh

283

636

1,285

Comprehesive energy consumption pre ton of oli and gas production

Tons of standard coal 

equivalent/ton

0.0550

0.0592

0.0571

Energy Conservation Results

Indicator

Unit

2020

2021

2022

Targets

Tons of standard coal equivalent

141.,550

150,890

149,800

Actual results

Thousand tons of carbon dioxide equivalent

148,788

161,493

275,710

Water Resource Management

Adhering to laws and regulations such as the Water Law of the People's Republic of China and internal policies such as the Rules for Water Conservation Management, we have performed comprehensive water resources management by increasing efforts in technological transformation and strengthening the comprehensive treatment and reuse of wastewater.

The Company defined the energy-saving tasks and water-saving indicators of its subordinate units, organized and implemented multiple management and technical measures on water conservation such as promoting seawater desalination, reuse of production water and recycling of rainwater and condensate water; optimizing the production process and carrying out water conservation projects to reduce the amount of new water used per unit of product; and strengthening the publicity of water saving and raising employees' awareness of water resource crisis and water saving concept. In 2022, the Company achieved 74,500 tons of water saving, exceeding the planned annual target of 25,000 tons.

Water Conservation Target: In 2023, 34,000 tons of water is expected to be saved through source management, seawater desalination with residue heat, condensate water, rainwater collection and optimized ship operation.

Water Resources Consumption of the Company

Indicator

Unit

2020

2021

2022

Total freshwater consumptionMillion tons2.1202.1271.986
Freshwater consumption per ton of oil and gas productionCubic meter/ton0.03330.03300.0284

 Water saving

Thousand tons894974.5

Low-carbon Management

With the consideration of the carbon emission targets of China and policies such as the Measures for the Administration of Carbon Emissions Trading (for Trial Implementation), we are working on and improving our low-carbon management systems. We have defined the work load for carbon management, corresponding data collection methods and laid out rules for carbon assets management. In 2022, the Company set up a Green Power and Carbon Trading Division in the New Energy Department, responsible for the overall management of green power and carbon trading. We also set up a carbon-negative office responsible for CCS/CCUS work. At the same time, we established a new energy branch, which set up multiple regional companies in Guangdong and Fujian to promote the development of new energy businesses and facilitate the overall carbon emission reduction of the Company.

Greenhouse Gas Emission Reduction Targets: In 2023, we plan to achieve a cumulative emission reduction of more than 577.0thousand tons of carbon dioxide equivalent. By 2025, we plan to achieve a cumulative emission reduction of more than 1.5 million tons of carbon dioxide equivalent.

Key Performance Chart for Greenhouse Gas Emissions of CNOOC Limited

Indicator

Unit

2020

2021

2022

Total freshwater gasemissions

Thousand tons of carbon dioxide equivalent

9,345

10,305

10,879

Direct greenhouse gas emissions

Thousand tons of carbon dioxide equivalent

9,123

9,774

9,779

Indirect greenhouse gas emission

Thousand tons of carbon dioxide equivalent

222

49

74.5

Greenhouse gas emissions perton of oil gas production

Thousand tons of carbon dioxide equivalent

0.1470

0.1597

0.1556