埕东油田东区西北部“2+3”提高采收率技术先导试验  

Pilot test of "2 +3" enhanced oil recovery technology in northwest part of east area in Chendong Oilfield.

作　　者：田承村[1] 田养林[1] 兰明君[1] 毕爱文[1] 毛源[1] 

机构地区：[1]胜利油田有限公司河口采油厂

出　　处：《油气地质与采收率》2005年第4期58-60,i0006,i0007,共4页Petroleum Geology and Recovery Efficiency

摘　　要：针对埕东油田老区综合含水高、非均质性强等问题,提出封堵大孔道、深度调剖与开展有限剂量的三次采油相结合的提高采收率方法(“2+3”提高采收率技术);根据埕东油田东区油藏特征,筛选出封堵大孔道堵剂、深部调剖剂、高效驱油剂和辅助剂。1999-2002年,对埕东油田东区西北部4口注水井进行了两轮封堵和深部调剖以及复配活性剂驱试验。试验累积增产原油17750t,增加可采储量7.7×104t,提高采收率12.89%,达到了改善油藏开发效果和提高原油采收率的目的。Enhanced oil recovery including macropore channel plugging and deep profile control combined with tertiary oil recovery under limit dose was put forward as “2 ＋ 3” technique for enhanced oil recovery aimed at the problem of serious heterogeneity and high composite water cut in old areas of Chengdong Oilfield. Based on the reservoir characters in east area of Chengdong Oilfield, plugging agent for macropore channel, deep profile control agent and high-effective oil displacement agent as well as the assistant agent were screened. Two cycles of plugging and deep profile control and experiment of compounding surfactant flood were implemented in four water injection wells in northwest part of east area in Chengdong Oilfield from 1999 to 2002. Cumulative incremental oil production was 17 750t, increased recoverable reserves was 7.7 × 10^4t and enhanced recovery efficiency was 12.89% in the experiments. The goals of improving reservoir development effect and oil recovery efficiency were achieved.

关 键 词：提高采收率 封堵大孔道 深度调剖 驱油剂 堵水剂 埕东油田 

分 类 号：TE357.43[石油与天然气工程—油气田开发工程]