Research Progress on Drilling and Completion Fluid Systems for High-Temperature Deep Wells
[Purposes]The deepening of exploration and development and the increase of well depth are accompanied by the occurrence of certain drilling accidents,and the selection of suitable drilling and completion fluid system for different working conditions of high-temperature deep wells can better achieve safe drilling and improve production.[Methods]In this paper,a large number of literatures are reviewed,combined with the current problems and research progress,and the types of drilling and completion fluid systems used in the drilling process of high-temperature deep wells are reviewed.[Find-ings]According to different geological factors or downhole environment,the drilling and completion fluid system that can improve the stability of the borehole,make the drilling rate meet certain requirements and meet the reservoir protection,so as to improve the efficiency and quality of on-site construction.[Conclusions]The rapid development of drilling and completion technology has accelerated the exploita-tion of oil and gas,and the research on high-temperature deep well drilling and completion fluid system is of great significance in the future.
high-temperature deep wellshigh densitylow densitydrilling and completion fluids
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