PANG Shaocong
School of Engineering and Technology, China University of Geoscience (Beijing), Beijing 100083, ChinaAN Yuxiu
School of Engineering and Technology, China University of Geoscience (Beijing), Beijing 100083, ChinaTIAN Ye
Downhole Operation Branch, CNPC Bohai Drilling, Renqiu Hebei 062552, China1.School of Engineering and Technology, China University of Geoscience (Beijing), Beijing 100083, China;2.Downhole Operation Branch, CNPC Bohai Drilling, Renqiu Hebei 062552, China
TE254;P634
Deep drilling is a necessary means of obtaining deep oil and gas resources and accurately detecting the deep earth. As the increase of the depths in deep wells and extra-deep wells, the high-temperature environment poses stricter requirements on drilling fluid systems. In recent years, new progress has been made in anti-temperature drilling fluid systems through continuous research. This paper summarizes the research and application of various high-temperature drilling fluid systems at home and abroad, and highlights the advantages and application scenarios of different systems, including high-temperature resistant water-based drilling fluid systems of high-temperature resistant polysulfide drilling fluid, high-density drilling fluid, low-density drilling fluid; high-temperature resistant oil-based drilling fluid, water-in-oil, oil-in-water and reversible oil-based drilling fluid systems; high-temperature resistant solid-free drilling fluid systems such as offshore deepwater solid-free, formate drilling fluid, foam drilling fluid, and weak gel drilling fluid; organosilicon drilling fluid systems and biomass drilling fluid systems. The future development directions is environment friendly, improved high-temperature resistance perpormance, cost reduction and enhanced multifunctionality, which requires continuous technological innovation and cooperation to promote the development and application of high-temperature drilling fluid systems in the drilling industry towards sustainability and efficiency.