基于流场适配性的水驱油藏开发系统评价模型  

An evaluation model of water-flooding reservoir development system based on flow field adaptability

作　　者：裴雪皓 刘月田 杨勇[2] 李阳[3] 张世明 曹小朋 卜亚辉[4] PEI Xuehao;LIU Yuetian;YANG Yong;LI Yang;ZHANG Shiming;CAO Xiaopeng;BU Yahui(State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum(Beijing),Beijing City,102249,China;Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257001,China;China Petroleum&Chemical Corporation,Beijing City,100728,China;Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石化胜利油田分公司,山东东营257001 [3]中国石油化工股份有限公司,北京100728 [4]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《油气地质与采收率》2022年第3期92-101,共10页Petroleum Geology and Recovery Efficiency

基　　金：中国石化科技部项目“基于大数据的水驱油藏流场调控优化研究”(P19001-3)。

摘　　要：目前常用的水驱开发效果评价方法多是对整个油藏开发历史的评价,难以及时反映当前时刻井网及注采压力系统与油藏状态的匹配程度。因此,针对水驱油藏地下流场演化本质,通过逻辑分析法筛选出含油饱和度与渗流速度作为流场评价参数,依据统计学理论,建立了由相对适配系数、流饱差、绝对适配系数和均衡系数等4个指标构成的流场适配性评价模型。以典型注采单元和实际区块为例,进行流场适配性评价,分析结果表明:均衡系数与实际日产油量之间呈正相关性,流场适配性评价模型可有效预警开发系统与油藏状态配置失衡的发生,并直观反映区域内的不合理位置,指导注采调整,量化评价各类调整措施的有效性,为水驱油藏下步开发调整提供技术支持。At present,the commonly used evaluation indexes for water-flooding development effect are mostly related to the evaluation of the entire reservoir development history,which are difficult to timely reflect the matching degree of the current well pattern and the injection-production pressure system with the reservoir state.Therefore,in view of the nature of the un⁃derground flow field evolution in water-flooding reservoirs,the oil saturation and flow velocity are screened out as seepage field evaluation parameters by the logic analysis method.In light of the statistical theory,an evaluation model of flow field adaptability is established with four indexes,including relative adaptation coefficient,flow-saturation difference(FSD),ab⁃solute adaptation coefficient,and equilibrium coefficient.With typical injection-production units and actual blocks as ex⁃amples,the flow field adaptability is evaluated.The analysis results show that the equilibrium coefficient and the actual dai⁃ly oil production are correlated positively.The developed evaluation model of flow field adaptability can effectively warn the imbalance between the development system and the reservoir state and intuitively reflect unreasonable positions in the ar⁃ea,thus able to guide the adjustment of injection and production,quantitatively evaluate the effectiveness of various adjust⁃ment measures,and provide technical support for the following development and adjustment of water-flooding reservoirs.

关 键 词：流场适配性 水驱油藏 含油饱和度 渗流速度 流场调整 

分 类 号：TE341[石油与天然气工程—油气田开发工程]