改善聚合物驱效果的过程控制技术——以河南油区双河油田北块H_3Ⅳ1—3层系为例  

Study on process control technology to improve effect of polymer flooding-case of north block H_3Ⅳ 1-3 strata in Shuanghe oilfield

作　　者：苏建栋[1] 黄金山[2] 邱坤态[1] 孙宜丽[1] 李岩[1] 

机构地区：[1]中国石化河南油田分公司第一采油厂,河南南阳474780 [2]中国石化油田事业部,北京100728

出　　处：《油气地质与采收率》2013年第2期91-94,98,共5页Petroleum Geology and Recovery Efficiency

基　　金：中国石化集团公司科技攻关项目"双河油田开发后期提高采收率技术综合应用研究"(P07067)

摘　　要："十一五"以来,河南油区投入开发的聚合物驱单元在注聚前均已进入特高含水期,在驱替过程中如何最大限度地提高对应油井的见效比例、见效厚度及增油倍数,是聚合物驱动态调整的难点。应用油藏工程、数值模拟、矿场试验等方法,研究了聚合物驱动态调整的政策界限,并针对聚合物驱的不同见效阶段、影响油井见效的因素等,探讨了改善聚合物驱效果的过程控制技术,包括合理配液配注、边水控制、注聚质量浓度差异调整、聚合物窜流控制、长期封堵高含水层评价动用以及聚合物驱适度提液技术。将这6项技术应用于双河油田北块H3Ⅳ1—3层系,取得显著效果,实际增油降水效果好于数值模拟预测,在注入孔隙体积倍数为0.56时,采收率提高了2.83%。Since the start of 'Eleventh Five-Year Plan', the polymer flooding units in Henan oilfieht have been in ultra-high water cut stage before injecting polymer, which has resulted in longer responding time. It is the key to maximize the proportion of effective corresponding wells, effective thickness and effective multiples in dynamically adjustment of polymer flooding. With methods of reservoir engineering, numerical simulation and field test, policy limits of polymer flooding dynamic adjustment are studied in this paper. Also, according to different stages of responding of polymer flooding and different factors that affect the performance of corresponding wells, the process control technology of improving the effect of polymer flooding is studied, including reasonable production and injection rate allocation technology, edge water control technology, polymer concentration differences adjustment technology, polymer channeling control technology, long term closure layer with high water cut evaluation and utilization technology and polymer flooding moderate extracting technology. The effect of application of the six process control technology in Shuangbei H3Ⅳ1-3 series of strata is significant and the effect of actual oil increase is better than numerical simulation forecast. When 0.56 PV polymer is injected into the eservoir, it can improve recovery by 2.83%.

关 键 词：特高含水期 聚合物驱 影响因素 改善效果 过程控制 双河油田 

分 类 号：TE357.431[石油与天然气工程—油气田开发工程]