基于差异化注采优化的水驱经济采收率快速预测方法——以胜利油田整装水驱油藏为例  

A rapid prediction method for economic oil recovery under water flooding based on differentiated injection and production optimization:A case study of uncompartmentlized water flooding oil reservoirs in Shengli Oilfield

作　　者：吕琦 曹伟东[3] 肖武[2] 张海燕[2] 徐永春 侯健[1] LU Qi;CAO Weidong;XIAO Wu;ZHANG Haiyan;XU Yongchun;HOU Jian(School of Petroleum Engineering,China University of Petroleum(East China),Qingdao City,Shandong Province,266580,China;Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China;Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257000,China;Exploration and Development Research Institute,Shanghai Offshore Oil and Gas Company,SINOPEC,Shanghai City,200120,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [3]中国石化胜利油田分公司,山东东营257000 [4]中国石化上海海洋油气分公司勘探开发研究院,上海200120

出　　处：《油气地质与采收率》2025年第1期102-111,共10页Petroleum Geology and Recovery Efficiency

基　　金：中国石化股份有限公司科技项目“老油田潜力评价与规划优化方法研究及应用”(P20070-3)。

摘　　要：矿场开发单元在现有技术经济条件下的采收率是开发效果评价和提高采收率潜力分析的重要指标,也是科学编制中长远规划的重要依据。油藏的动静态非均质性对采收率影响较大,单井差异化注采优化能够实现非均质油藏的均衡注采,提高采收率。目前现行采收率预测方法未充分考虑动静态非均质性影响,难以实现单井差异化注采条件下的采收率准确预测。以胜利油田整装水驱油藏为例,应用油藏数值模拟技术以及数理统计分析方法,明确水驱油藏采收率的主控因素。提出基于单井差异化注采优化的水驱增效技术,采用正交试验设计方法,融合动静态主控影响因素、经济政策界限等,设计多组实操性强的方案进行模拟;借助多因素非线性拟合手段,充分考虑油藏非均质性适配最佳技术政策,结合经济条件约束,构建基于差异化注采优化的水驱经济采收率快速预测模型。矿场应用表明该方法能够实现水驱非均质油藏差异化注采开发经济采收率的快速、准确预测。The oil recovery of a field development unit under the current technical and economic conditions is an essential indicator for evaluating development effects and analyzing the potential for enhancing oil recovery.It is also an essential basis for scientifically formulating medium-term and long-term plans.The dynamic and static heterogeneity of oil reservoirs significantly impacts oil recovery.The optimization of differentiated injection and production in single wells can achieve balanced injection and production in heterogeneous oil reservoirs and enhance oil recovery.Currently,the influence of dynamic and static heterogeneity is not fully considered in the existing oil recovery prediction methods,and oil recovery is difficult to accurately predict under the different injection and production conditions in single wells.In this paper,uncompartmentalized water-flooded oil reservoirs were taken as an example;the main controlling factors influencing the oil recovery of water-flooded oil reservoirs were identified by the numerical simulation technology and mathematical statistics analysis methods.The water flooding for efficiency improvement technology was proposed based on the optimization of differentiated injection and production in single wells.The orthogonal experimental design method was adopted,and the main dynamic and static influencing factors,economic policy limits,etc.,were integrated to design multiple groups of highly operable schemes for simulation.With the help of multi-factor nonlinear fitting means,the reservoir heterogeneity was fully considered to adapt to the best technical policies.Under economic condition constraints,a rapid prediction model for the economic oil recovery of water flooding oil reservoirs was constructed based on the optimization of differentiated injection and production.Field practice applications showed that this method could achieve rapid and accurate prediction of the economic oil recovery for the differentiated injection and production development of water flooding heterogene

关 键 词：动静态非均质性 差异化注采优化 经济极限 采收率快速预测 开发潜力 

分 类 号：TE341[石油与天然气工程—油气田开发工程]