自适应控制压力钻井关键技术及研究现状  

Key technologies and research progress of the adaptive managed pressure drilling

作　　者：李伟廷[1] 侯树刚[2] 兰凯[2] 龚嘉琦[3] 

机构地区：[1]中国石化中原石油勘探局钻井三公司 [2]中国石化中原石油勘探局钻井工程技术研究院 [3]华中科技大学多谱信息处理技术国防重点实验室

出　　处：《天然气工业》2009年第11期50-52,共3页Natural Gas Industry

基　　金：中国石化集团重点科研项目(编号:2008302-1)的资助

摘　　要：为了减少钻遇压力敏感或安全压力窗口狭窄等复杂地层所产生的非生产时间,提出了对井底压力进行精确控制的自适应控制压力钻井的技术思路。探讨了控压钻井技术的井底压力控制机理,集成了所需关键技术装备,绘制了自适应控压钻井技术的关键技术路线图。系统地介绍了地层压力随钻检测技术、随钻井底环空压力测量、钻井液连续循环装置、井口回压检测与控制、数据传输技术的国内外技术现状。最后提出建议:国内相关单位应联合攻关,尽快研发具有自主知识产权的自适应控压钻井技术及相关装备,缩短与国际先进钻井技术间的差距。To reduce non-productive time(NPT)caused by pressure sensitivity and narrow safe pressure window,the adaptive managed pressure drilling is recommended to precisely control downhole pressure.Based on the analysis of downhole pressure controlling mechanism and the equipments for managed pressure drilling,key technologies to realize the adaptive managed pressure drilling are concluded.A review is made herein on the status of many techniques at home and abroad such as formation pressure measurement while drilling,annulus bottom pressure measurement while drilling,continuous circulation system,wellhead back-pressure monitoring and control,and data transmission.It is suggested that drilling companies and research departments should unite to develop the adaptive managed pressure drilling technology and the related equipments with independent intellectual rights,thus to narrow the gap between domestic and world drilling technology.

关 键 词：深井 水平井 控压钻井 自适应控制 关键技术 钻井液 

分 类 号：TE249[石油与天然气工程—油气井工程]