摘要
冀东滩海地区地层复杂、井身结构特殊、施工难度大。采用了正电-聚硅醇成膜封堵低渗透钻井液和甲酸钠钻井液。现场应用表明,该套钻井液性能稳定,成功解决了大位移井的大井眼携岩、玄武岩垮塌、地层承压低易漏失、拖压易卡等问题,油层保护效果好,井下安全,能满足各项施工要求。
A drilling fluid treated with poly-silanol and a sodium formate drilling fluid were used in the Bohai beach area in eastern Hebei to solve downhole troubles encountered in the extended reach horizontal wells.The downhole troubles previously encountered included difficulties in cuttings carrying,borehole caving and sloughing in basalt formation,mud losses,and pipe sticking.The use of the drilling fluids in four wells was very successful.
出处
《钻井液与完井液》
CAS
2009年第6期82-85,共4页
Drilling Fluid & Completion Fluid
关键词
正电-聚硅醇成膜封堵低渗透钻井液
大井眼携岩
井眼稳定
润滑
防漏
Poly-silanol filming sealing low filtration drilling fluid
Cutting-carrying in large diameter hole
Borehole stabilization
Lubrication
Mud loss prevention
