特高含水期油藏井网调整开发效果三维物理模拟实验研究  

3D physical simulation experiments of development effects after well pattern adjustment in extra-high water cut reservoirs

作　　者：姚秀田[1] 苏鑫坤 郑昕 马军[1] 盖丽鹏[1] 崔传智[2] YAO Xiutian;SU Xinkun;ZHENG Xin;MA Jun;GAI Lipeng;CUI Chuanzhi(Gudao Oil Production Plant,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257231,China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao City,Shandong Province,266580,China;Oil and Gas Development Management Center,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257001,China)

机构地区：[1]中国石化胜利油田分公司孤岛采油厂,山东东营257231 [2]中国石油大学(华东)石油工程学院,山东青岛266580 [3]中国石化胜利油田分公司油气开发管理中心,山东东营257001

出　　处：《油气地质与采收率》2023年第1期139-145,共7页Petroleum Geology and Recovery Efficiency

基　　金：中国石化科技计划项目“整装油田特高含水期流场调控优化方法研究”(P16100)。

摘　　要：水驱油藏进入特高含水期后,井网调整是进一步提高采收率的有效途径。基于三维水驱物理模拟实验装置,开展了基础井网、井网抽稀及井网加密的正韵律储层水驱油物理模拟实验,对比井网不调整与调整(井网抽稀与井网加密)的开发效果。实验结果表明:与基础井网相比,井网抽稀和井网加密都可以提高采收率,且井网抽稀的采收率提高幅度比井网加密大;当累积注水量相同时,注入速度越大,水驱波及系数越大,采收率越大,且井网调整后提液的采收率要比井网调整后不提液的采收率要大。与基础井网、井网加密相比,井网抽稀水驱开发效果最好;井网调整后提液可以进一步提高采收率。The well pattern adjustment is an effective method to further enhance recovery after the waterflooding reservoirs enter the ultra-high water cut stage. On the basis of the experimental device for three-dimensional(3D)physical simulation,waterflooding physical simulation experiments for positive-rhythm reservoirs were carried out under the basic well pattern,thinned well pattern,and infilled well pattern,and the development effects with and without adjustment of well patterns(well pattern thinning and well pattern infilling)were compared. It is found that compared with the basic well pattern,the thinned well pattern and the infilled well pattern can increase the final recoveries,and the increased recovery under thinned well pattern is greater than that under infilled well pattern. When the cumulative injected water volumes are the same,a higher injection rate leads to a higher waterflooding sweep coefficient and greater recovery. In addition,the final recovery with increased liquid production after well pattern adjustment is higher than that without increased liquid production. The waterflooding development effect under the thinned well pattern is superior to that under the basic well pattern and infilled well pattern,and increased liquid production after well pattern adjustment can give rise to enhanced oil recovery.

关 键 词：水驱油藏 井网抽稀 井网加密 提液 三维物理模拟 

分 类 号：TE341[石油与天然气工程—油气田开发工程]