复杂断块特高含水油田储层及渗流规律研究  

Research on reservoirs and seepage law in complex fault block oilfield at ultra - high water cut stage

作　　者：王群一[1] 毕永斌[1] 修德艳[1] 房梦斋 王迎华[1] 

机构地区：[1]中油冀东油田分公司,河北唐山063004

出　　处：《特种油气藏》2013年第4期70-73,154,共4页Special Oil & Gas Reservoirs

基　　金：中油重大科技项目"水驱提高采收率关键技术研究--断块油田提高采收率技术研究与试验"(2011B-1102)

摘　　要：选取冀东复杂断块油田典型井岩心,采用水驱油实验与岩心分析相结合的方式,研究了特高含水阶段储层参数变化规律,并利用储层孔隙分形、油水相对渗透率及采液采油指数曲线分析了特高含水阶段的储层变化及油水渗流规律。研究结果表明:特高含水开发阶段储层孔隙度、渗透率均较原始状态有所增大,岩石亲水性逐渐增强,水相相对渗透率大幅度提高,无因次采液、采油指数均呈上升趋势,但无因次采液指数上升幅度明显高于无因次采油指数。The variation of reservoir parameters at ultra-high water cut stage is studied for complex fault blocks in the Jidong oilfield through water flooding experiment and analysis with cores from typical wells;and the changes in reservoirs and oil / water seepage law are analyzed by using pore fractal,oil-water relative permeability,fluid productivity index and oil production index.The results show that at ultra-high water cut stage,reservoir porosity and permeability increase comparing to the original state,rock hydrophilicity increases gradually,water-phase relative permeability increases greatly,both dimensionless fluid productivity index and oil production index are on the rise,but the rising range of dimensionless fluid productivity index is apparently higher than dimensionless oil production index.

关 键 词：复杂断块油田 储层参数 特高含水 油水渗流规律 

分 类 号：TE312[石油与天然气工程—油气田开发工程]