Research and Application of Fully Enclosed Zero Emission Drilling and Completion Technology System in Bohai Oilfield
The"New,Excellent and Fast"pilot project of Bohai A Oilfield is only 200 m away from the ecological red zone.It is a typical"marginal,small,fragmented and deep"oilfield.The whole process of drilling,comple-tion and development requires"zero emission",and it is difficult for green economic development.This study achieves technical breakthroughs such as efficient closed recovery and transmission,reuse of water-based drilling fluid,and EPS recovery and reduction treatment by optimizing displacement methods,upgrading solid control equipment,and replacing transmission pipelines,forming a fully enclosed zero-emission drilling and completion technology system for Bohai Oilfield.This technology system is successfully applied to 18 wells in the"New,Ex-cellent and Fast"pilot project,reuses 2 414 m3 of drilling fluid,and processes 7 040 t of cuttings,achieving good results of full release of mechanical drilling rate,zero replacement of drilling mud,zero discharge of drilling cut-tings waste fluid into the sea,and zero shutdown in severe weather.
Bohai oilfieldNew,Excellent and Fastfully enclosedzero emission
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