非均质储层井网匹配模式与井间剩余油分布研究  

Study on Well Pattern Matching Model and Inter Well Remaining Oil Distribution in Heterogeneous Reservoirs

作　　者：范洪军 曹伟佳[3] 王夏斌 闫坤 魏伟 FAN Hong-jun;CAO Wei-jia;WANG Xia-bin;YAN Kun;WEI Wei(State Key Laboratory of Offshore Oil Exploitation,Beijing 100028,China;CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;Laboratory of Enhanced Oil Recovery of Education Ministry,Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]海洋石油高效开发国家重点实验室,北京100028 [2]中海油研究总院有限责任公司,北京100028 [3]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《当代化工》2022年第10期2348-2351,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金重点项目“驱油相自扩大波及体积提高采收率新方法”(项目编号:51834005);海洋石油高效开发国家重点实验室第五批开放基金课题“河流相复合砂体构型对剩余油分布影响机制研究”(项目编号:CCL2021RCPS0510KQN)经费资助

摘　　要：渤海油田储层类型以河流相复合砂体为主,在长期注水开发后已经进入高含水、特高含水阶段,砂体复合程度如何影响剩余油的形成与分布目前尚不明确。因此,研究剩余油的形成与分布情况,提出最优井网匹配模式,是目前油气田开发工作者关心的重点。利用数值模拟手段,建立具有不同复合程度的典型地质模型,开展了非均质储层井网匹配模式与井间剩余油分布研究。结果表明:当平面非均质模型各层间无隔层时,采取直井井网开发后,全区水驱后全区剩余油饱和度降低幅度最大,降低22.69%,其次为直井注水平井采联合井网,再次为水平井井网。当垂向非均质模型各层间无隔层时,采取水平井井网开发后,全区水驱后全区剩余油饱和度降低幅度最大,降低22.86%,其次为直井注水平井采联合井网;当层间有隔层时,采取直井注水平井采联合井网开发后,全区水驱后全区剩余油饱和度降低幅度最大,降低20.96%。The reservoir type of Bohai oilfield is mainly fluvial composite sand body.After long-term water injection development,it has entered the stage of high water cut and ultra-high water cut.It is not clear how the degree of sand body composite affects the formation and distribution of remaining oil.Therefore,the study of the formation and distribution of remaining oil and putting forward the optimal well pattern matching mode is the focus of oil and gas field development workers.The results showed that when there was no interlayer between the layers of the plane heterogeneous model,after the development of the vertical well pattern,the residual oil saturation in the whole area decreased the most after water flooding,with the decrease of 22.69%,followed by the vertical well injection horizontal well production combined well pattern,and then the horizontal well pattern.When there was no interlayer between the layers of the vertical heterogeneous model,after the horizontal well pattern was adopted for development,the residual oil saturation in the whole area decreased the most after water flooding,with the decrease of 22.86%,followed by the vertical well injection and horizontal well production combined well pattern.When there was a interlayer between the layers,after the combined well pattern development of vertical well injection and horizontal well production was adopted,the residual oil saturation in the whole area decreased by 20.96%after water flooding.

关 键 词：渤海油藏 非均质 剩余油 井网类型 匹配模式 

分 类 号：TE341[石油与天然气工程—油气田开发工程]