New field development operation and hydrocarbon production have been one of the main contributors to global carbon emission. With the introduction of carbon tax, the cost of developing new fields and hydrocarbon production is expected to increase significantly if no serious action is taken to address the carbon footprint from such activity, especially in the high Carbon Dioxide (CO2) field. This paper will share on the sustainable development concept undertaken by PETRONAS to address the future of Net Zero Carbon Emission (NZCE) by 2050 during field development planning of a high CO2 hydrocarbon reservoir and the approach in realizing the plan.

Surface facility is designed to filter all the CO2 in the hydrocarbon production at offshore CPP (Central Processing Platform) and re-inject it back into the formation via a dedicated gas injector well. The well placement is carefully analyzed to be located at area where the injected CO2 gas can enhance the hydrocarbon recovery by maintaining the reservoir gas cap pressure. CO2 gas also can be used as a source of gas for oil producer wells that require gas lift. PETRONAS had established a process flow during well detail engineering design to guide the project team that consists of Subsurface and Facilities to find the right balance in addressing the risk of CO2 related well integrity issues and project economics outcome. Part of the process flow involves the sensitivity analysis of reinjection gas specification downstream surface compressor at CPP impact towards well casing and tubing material selection, CO2 plume migration and estimating reservoir condition at the end of field life.

This established process flow managed to effectively guide the FDP (Field Development Plan) team to come out with the best cost-effective development concept that able to realize both company ambition of sustainable field development plan toward net zero carbon emission and projecting positive economic result.

This paper would provide more insight into the study and analysis to be considered during designing new wells in a field that integrate development wells producing hydrocarbon and Carbon Capture & Storage (CCS) CO2 wells with lesson learnt and best practices that are valuable for future project with similar scope.

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