冀东复杂断块油藏CO_2吞吐典型井剖析  

Analysis of CO2 huff and puff in typical well of complex fault block reservoir in Jidong oilfield

作　　者：马桂芝[1] 陈仁保[1] 王群一[1] 白冰[1] 杨晓亮[1] 刘丛宁[1] 

机构地区：[1]中国石油冀东油田分公司勘探开发研究院,河北唐山063004

出　　处：《石油地质与工程》2013年第5期107-111,150,共5页Petroleum Geology and Engineering

基　　金：中国石油天然气股份有限公司重大科技项目"水驱提高采收率关键技术研究"(2011B-1106)

摘　　要：冀东南堡陆地浅层油藏属于复杂断块油藏,随着水平井井数的增加,到2010年高含水油井已经占到水平井总数的90%,严重影响了开发效果。2010年10月在稠油水平井CO_2吞吐试验取得了较好的控水增油效果之后,逐渐向定向井、稀油井推广,控水增油效果显著。通过对CO_2吞吐实施效果进行分类,并对典型井进行了剖析,明确了导致CO_2吞吐效果好或无效的主要原因。构造部位相对较高、采出程度较低、剩余油饱和度高、油藏密封性较好的并CO_2吞吐都有好的增油效果;而离油水边界较近、邻井高部位且大排量生产、构造部位低、剩余油饱和度低、油藏密封性不好的井CO_2吞吐效果不好。典型井剖析可为今后研究与制订同类型油藏控水增油措施提供借鉴和指导作用。Jidong Nanpu shallow land reservoir is complex fault block reservoir.With the increasing of horizontal wells,the number of oil wells with high water cut has accounted for90%of the total number of horizontal wells in 2010,which seriously affected the development effect.CO2 huff and puff test on heavy oil horizontal well has gained good effect on water control and oil increment in October 2010 and gradually is applied to the directional well,thin oil well with significant effect.According to the classification of the CO2 effect,the typical wells are analyzed,which identified the main causes of good CO2 stimulation effect or not.CO2 has good stimulation effect in the wells where construction site is relatively high,the degree of recovery is low,oil saturation is high and reservoir seal is better.While the CO2 has bad effect in the wells where it is near the oil- water boundary,adjacent wells in high position,the production rate is high,construction site is low,residual oil saturation is low and reservoir seal is not good.Analysis on the typical wells can provide reference and guidance for future study and formulation of water control and oil increase measures for the same type of reservoir.

关 键 词：CO2吞吐 冀东油田 典型井剖析 复杂断块油藏 

分 类 号：TE357.42[石油与天然气工程—油气田开发工程]