Key Technical Challenges and Prospects of Drilling and Completion in Ultra-deep Reservoirs,Sinopec
Ultra-deep stratum is key field for increasing reserves and production of Sinopec,which is technically difficult and challenging.In recent years,Sinopec has been continuously tackling difficulties related to the explora-tion and development demands of ultra-deep stratum in key blocks,the high-temperature and high-pressure envi-ronment as well as complex geological conditions,etc.Breakthroughs have been made in key technologies for ul-tra-deep drilling and completion,forming a set of key technologies with fundamental theories of drilling and com-pletion engineering,automated drilling and completion equipment,high-temperature-resistant drilling and comple-tion fluids,high-temperature-resistant instruments and tools,as well as completion and testing technologies,etc.as the core.The drilling of 120 oil and gas wells with the depth of more than 8,000 m has been successfully imple-mented,with the drilling capability of ultra-deep well exceeding 9,000 m.This has boosted the construction of large-scale ultra-deep oil and gas fields in Shunbei,Tarim Basin,and the breakthroughs in exploration and devel-opment of ultra-deep oil and gas in the marine strata of the Sichuan Basin.Besides,this has provided strong engi-neering technical support for the development of oil and gas resources and its corresponding economic efficiency.As oil and gas exploration and development continue to advance,engineering geologic risks and new challenges faced during drilling and completion process continue to emerge.Further research which are related to accurate prediction of formation pressure,wellbore trajectory control,high-temperature resistant working fluid system,high efficiency rock-breaking and drilling speed-up tools,geo-engineering integration,etc.need to be carried out to re-alize the continuous upgrading of key drilling technologies and equipment to support the efficient exploration and development of deep and ultra-deep oil and gas resources.
ultra-deep stratumdrilling and completion engineeringhigh temperature and high pressuremathematical intellectualization
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维普
