Research progress and development of deep and ultra-deep drilling fluid technology  

作　　者：SUN Jinsheng YANG Jingbin BAI Yingrui LYU Kaihe LIU Fengbao 

机构地区：[1]School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,China [2]CNPC Engineering Technology R&D Company Limited,Beijing 102206,China

出　　处：《Petroleum Exploration and Development》2024年第4期1022-1034,共13页石油勘探与开发（英文版）

基　　金：Supported by the Projects of National Natural Science Foundation of China(52288101,52174014,52374023)。

摘　　要：The research progress of deep and ultra-deep drilling fluid technology systematically reviewed,the key problems existing are analyzed,and the future development direction is proposed.In view of the high temperature,high pressure and high stress,fracture development,wellbore instability,drilling fluid lost circulation and other problems faced in the process of deep and ultra-deep complex oil and gas drilling,scholars have developed deep and ultra-deep high-temperature and high-salt resistant water-based drilling fluid technology,high-temperature resistant oil-based/synthetic drilling fluid technology,drilling fluid technology for reservoir protection and drilling fluid lost circulation control technology.However,there are still some key problems such as insufficient resistance to high temperature,high pressure and high stress,wellbore instability and serious lost circulation.Therefore,the development direction of deep and ultra-deep drilling fluid technology in the future is proposed:(1)The technology of high-temperature and high-salt resistant water-based drilling fluid should focus on improving high temperature stability,improving rheological properties,strengthening filtration control and improving compatibility with formation.(2)The technology of oil-based/synthetic drilling fluid resistant to high temperature should further study in the aspects of easily degradable environmental protection additives with low toxicity such as high temperature stabilizer,rheological regulator and related supporting technologies.(3)The drilling fluid technology for reservoir protection should be devoted to the development of new high-performance additives and materials,and further improve the real-time monitoring technology by introducing advanced sensor networks and artificial intelligence algorithms.(4)The lost circulation control of drilling fluid should pay more attention to the integration and application of intelligent technology,the research and application of high-performance plugging materials,the exploration of diversi

关 键 词：deep and ultra-deep drilling high temperature resistant drilling fluid reservoir protection drilling fluid lost circulation control safety and environmental protection technical prospects 

分 类 号：TE254[石油与天然气工程—油气井工程]