Safety and Environmental Protection

Ensuring safety and minimizing the environmental impact are integral to the Company’s sustainable growth. All along, the Company has upheld the HSE core value concepts of “Safety First, Environment Paramount, Focus on People, and Equipment Integrity”. The Company actively copes with the challenges that its safety production and environmental protection work encounter in a low oil price environment and keeps improving its HSE system management. It cultivates an unique HSE culture with its own characteristics. It works hard to provide both its staff and its contractors with a safe working environment, and to foster first-rate management abilities in production safety.

Climate change remains one of the major challenges facing the world. As a responsible energy company, CNOOC Limited aims to establish itself as a “Resource Conservative, Green and Low Carbon” enterprise. To this end, the Company has been proactively developing clean energy and promoting energy conservation and emission reduction projects in an effort to address climate change.

Energy Conservation

CNOOC Limited has attached great importance to energy conservation in every aspect of its production and operation. It not only focused on energy conservation and control at the beginning of the projects and conducted strict assessment and inspection of newly built projects and refurnished them to ensure they reach the advanced standards in China, but also continued to adopt such measures as improving management, optimizing process and production operations, and undertaking reforms in energy conservation technologies. The Company also launched energy saving initiatives, and encouraged employees to go green commuting, to consume in a green way, and constantly boosted their knowledge and awareness of environmental protection.

In 2017, the energy conserved was 155,000 tons of standard coal equivalent, 118.3% of annual target. The comprehensive energy consumption per unit of oil and gas production was 0.0494 tons of standard coal.

Emissions Reduction

Premised upon “Green Development and Low-carbon Innovation,” CNOOC Limited has always advocated a green and low-carbon style of production, life, and consumption. It promoted energy conservation and emission reduction in production, transmission and consumption by taking advantage of energy conservation, environmental protection system.At present, all of the Company’s offshore facilities emissions have reached standards. The average concentration of oil content in process water is averagely 13.1 mg/L, much lower than the national’s emission standard of 30 mg/L.

In 2017, in domestic the Company produced 22,325.9 tons of hazardous waste and 16,489.9 tons of non-hazardous waste, 99.8 tons of COD (“Chemical Oxygen Demand”), 2,534.8 tons of oil in water, 8.4 tons of sulfur dioxide, and 272.2 tons of nitrogen oxides.

Improving Carbon Resources Management

The low carbon management platform of CNOOC Limited established a series of new standards for carbon emissions. It set up new models including carbon emission calculation, statistics, monitoring, data analysis, carbon quota index, carbon quota P&L, internal CCER, national and local low carbon policies and others. Within the year, the Company conducted carbon inspection and discovered its total carbon emission amount, emission intensity and carbon emission reduction potential. These efforts laid a solid foundation for the Company’s low carbon development strategy.

In 2017, the total GHG emissions of the Company was 7.829 million tons of CO2 equivalent, of which the direct GHG emissions (scope I) was 7.736 million tons of CO2 equivalent, accounting for 98.81%. The indirect GHG emissions (scope II) was 93 thousand tons of CO2 equivalent, accounting for 1.19%. The amount of GHG emission from production of oil and gas per ton was 0.1409 tons.

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