芳深9-2井钻井液技术  

Drilling Fluid Technology for Well Fangshen9-2

作　　者：李培林[1] 陈先贵[2] 安淑芳 刘明胜 

机构地区：[1]胜利石油管理局海洋钻井公司 [2]大庆油田井下作业公司 [3]华北石油机械化工有限公司 [4]渤海钻探国际工程公司

出　　处：《钻井液与完井液》2008年第4期74-76,共3页Drilling Fluid & Completion Fluid

摘　　要：芳深9-2井位于松辽盆地北部徐家围子断陷上升盘形成的鼻状构造带上,是大庆油田的一口重点采CO2气井,完钻井深为3 759 m。介绍了该井的钻井液技术难题和采用的钻井液工艺技术措施。该井二开裸眼段长达2 246 m,重点是抑制地层造浆、保持井壁稳定、防止井塌和缩径,选用了两性离子聚合物低固相不分散钻井液,满足了上部井段施工需要。三开裸眼段长达1 342 m,根据地层特点采用了硅氟抗温防塌钻井液,安全顺利地钻过了以火山岩、凝灰岩为主的地层。应用结果表明,该套钻井液技术对钻这一类井有普遍的指导意义。Well Fangshen-2 is located on a nose structure in Songliao Basin,and is a key CO2 producing well in Daqing oilfield.This paper introduces the drilling fluid technology for this well.Totally 3,759 m in depth,this well had a interval length of 2,246 m in the second interval.Mud making,formation sloughing and tight hole etc.are the major issues concerning the mud operation in this interval.The third interval had a length of 1,342 m,and penetrated the volcanic and tuff rocks.Different drilling fluids were chosen for the two sections: amphoteric polymer mud for the second interval and silicon-fluorine-containing fluid for the third interval,and the well was smoothly drilled.

关 键 词：两性离子聚合物钻井液 硅氟抗温防塌钻井液 井壁稳定 山前破碎带 

分 类 号：TE254.3[石油与天然气工程—油气井工程]