Optimization and expansion of oil-water separation and production water treatment system in an offshore oilfield group
To achieve a low carbon,cost-effective,and high-efficiency production guided by the concept of resource integration and production optimization,an oilfield group originally having two floating production storage and offloading units(FPSO)merged Oilfield 1,Oilfield 2,and Oilfield 3 for operation,with one FPSO dispatched to other blocks.With factors including the process flow of each platform,production requirements for oilfield liquid extraction,produced liquid pressure,and platform load-bearing capacity taken into full consideration,the expansion of production water treatment capacity in Oilfield 2 and Oilfield 3 was achieved through a combination of hydrocyclone and air floatation,and the newly added process flow in Oilfield 1 was involved with a combination of three phase separator and two-stage air floatation.After the expanded oilfield started production,the oil content of the production water discharged into the sea could satisfy the discharge standard of the sea area,and the equipment operated stably.Optimization and expansion have laid a solid foundation for the company's goal of increasing reserves and production,and can also provide a reference for other oilfields.
hydrocyclonecompact air flotationthird generationoptimization and expansionproduction water
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