保护裂缝-孔隙性储层的钻井液技术  

Drilling fluid technology for fracture-pore formation

作　　者：雍富华[1] 鄢捷年[2] 

机构地区：[1]吐哈油田钻采工艺研究院 [2]石油大学

出　　处：《钻井液与完井液》2001年第2期6-9,共4页Drilling Fluid & Completion Fluid

摘　　要：吐玉克油田是在吐哈盆地新开发的一个油田,以裂缝-孔隙性储层为主。根据其储层特征,开展了保护油气层钻井液的实验研究,对适于堵塞裂缝的暂堵剂进行了优选。室内研究结果表明,未加暂堵剂的原用聚磺钻井液对吐玉克油田裂缝-孔隙性储层的损害十分严重,损害后储层的渗透率不足原始渗透率的3％;将球形颗粒暂堵剂(XCB5-1)、纤维状暂堵剂(LF-1)和可变形颗粒暂堵剂(EP-1)复配使用,能够达到“堵得稳”和“易反排”的技术要求。现场应用取得了十分显著的效果。Tuyuke Oilfield is a newly developed one located in Tuha Basin, behaving as fracture-pore reservoir. Study on drilling fluid technology is performed based on the formation characteristic and the matching bridging agents are optimized. Lab tests show the fluid damage the formation severely without temporary plugging agents with final permeability less than 3% of the original data, but with XCB5-1, LF-1 and EP-1 compounded, the fluid meets the requirements of stable plugging and easy back-blow Field using is successful.

关 键 词：油气藏 裂缝性储集层 防止地层损害 聚合物钻井液 钻井液添加剂 暂堵剂 

分 类 号：TE254.3[石油与天然气工程—油气井工程] TE258.2