双层结构协同增效保护油气层技术及其室内实验评价  

The reservoir protection technology with synergy of double-layer structure and its laboratory evaluation

作　　者：吕开河[1] 韩立国[2,3] 刘玉霞[1] 任冠龙[1] 乔伟刚[1] 陈亚男[1] 

机构地区：[1]中国石油大学(华东)石油工程学院 [2]胜利石油管理局 [3]塔里木油田第六勘探公司

出　　处：《中国海上油气》2012年第4期53-56,共4页China Offshore Oil and Gas

基　　金：国家科技重大专项"煤层气井钻井关键技术研究(编号:2009ZX05060)"和"储层保护机理及新技术研究(编号:2008ZX05002)"资助

摘　　要：针对屏蔽暂堵保护油气层技术存在的问题,提出了双层结构协同增效保护油气层技术,即通过镶嵌屏蔽剂与膜屏蔽剂复配使用,在封堵较大孔隙或微裂缝基础上形成有效聚合物胶束屏蔽膜,从而有效降低钻井液侵入地层。室内实验评价表明:镶嵌屏蔽剂与膜屏蔽剂的复配使用可产生较好的协同增效保护油气层作用,对钻井液流变性影响不大,具有降滤失作用明显、渗透率封堵率高、封堵强度大、易返排等特点。Aiming at the problems of temporary plugging reservoir protection technology, we propose the reservoir protecting technology with synergy of double-layer structure, which compounds the embedding shielding agent and membrane shielding agent to form the effective shielding membrane on the surface of the wall with a unidi rectional plugging effect for large pores and cracks, so that to minimize the drill fluid invasion. The results of laboratory evaluation show that the combination of the two agents can generate better synergy for protecting reservoir with little impact on the fluid rheological property, and is characterized by obvious fluid loss control ability, high plugging ability and strength, easy flow back and SO on.

关 键 词：油气层保护技术 双层结构协同增效 镶嵌屏蔽 膜屏蔽 复配 实验评价 

分 类 号：TE254[石油与天然气工程—油气井工程]