适用于不同压力体系储层的分层完井技术  

Separate layer completion technology for reservoirs with different pressure systems

作　　者：戴强[1] 王申申[2] 吴怡[1] 周垚尧[1] 杜济明[1] 

机构地区：[1]中油川庆钻探工程有限公司,四川广汉618300 [2]西南石油大学,四川成都610500

出　　处：《特种油气藏》2012年第1期124-126,130,共4页Special Oil & Gas Reservoirs

基　　金：中油川庆钻探工程公司科技计划项目"龙岗地区不同压力系数储层二次分层完井试油工艺技术研究"(2009-94)

摘　　要：针对四川盆地纵向上存在多个油气储层,且不同储层间压力系数差异较大,天然气井完井难度大的问题,采用分层完井方式以提高气藏采收率、减少钻井投资。运用程序分析方法辨析该类井的完井作业难点,对影响分层完井方式的关键环节—井控安全、完井管柱和增产改造进行研究,并初步应用于现场作业。研究表明,采用分层完井能够更有效地提高该类气井的开采效率,但仍需进一步优化管柱结构,减小储层伤害,达到更好地恢复生产的目的。There are several reservoirs vertically in Sichuan Basin and the pressure coefficient differs a lot among the reservoirs,leading to difficulty in gas well completion.This paper introduces separate layer completion to improve the recovery factor of gas reservoirs and reduce drilling cost.The difficulties in well completion are analyzed by program analysis method,the key factors affecting separate layer completion including well control safety and completion pipestring and the stimulation measures are studied,and the technology has been applied to field operation on a trial basis.The study shows that separate layer completion can effectively improve the recovery efficiency of such gas wells,but more work is to be done in respects of pipestring optimization and formation damage reduction to better resume production.

关 键 词：层间压力差异 纵向上多储层 分层完井 完井管柱 

分 类 号：TE257[石油与天然气工程—油气井工程]