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基于三维储层构型模型的油藏数值模拟及 剩余油分布模式
岳大力1,吴胜和1,程会明2,杨渔3
(1.中国石油大学资源与信息学院,北京102249 ;2.中石化胜利油田有限公司,山东东营257000;3.振华石油控股有限公司,北京100031)
摘要:
以岩心、测井及生产动态分析等资料为基础’采用层次分析与模式拟合相结合的方法,针对曲流河储层,按复 合曲流带、单一曲流带、单一点坝以及点坝内部侧积体4个层次进行模式拟合,对各级次构型单元内部结构进行了系 统分析,进而建立了三维储层构型模型及参数模型,并进行了基于实际三维储层构型模型的油藏数值模拟,在此基 础上建立了复合曲流带(平面相变、层间干扰等)、单一曲流带(层内韵律、废弃河道遮挡)'以及点坝内部侧积体(侧积 层遮挡)3种不同规模储层构型及开发因素控制的剩余油分布模式,提出了泥质侧积层控制的剩余油挖潜措施。研 究结果表明,孤岛油田单井上侧积层厚度为0.2 ~0. 8 m,空间上侧积层向废弃河道方向倾斜分布,倾角为5°10°, 可延伸至河道砂体的2/3左右;单井历史拟合符合率较高,检查井11J11的剩余油饱和度资料较好地验证了油藏数 值模拟的可靠性;采用在注采井之间靠近点坝中上部钻水平井的方式可有效挖潜曲流河点坝内部的剩余油。
关键词:  曲流河储层  油藏数值模拟  储层构型  剩余油分布  孤岛油田
DOI:
分类号:
基金项目:教育部博士点基金项目(20060425004)
Numerical reservoir simulation and remaining oil distribution patterns based on 3D reservoir architecture model
YUE Da-li1,WU Sheng-he1,CHENG Hui-ming2,YANG Yu3
(1. School of Resource and Information Technology in China University of Petroleum,Beijing 102249, China;2. Shengli Oilfield Limited Company,S1N0PEC,Dongying 257000, Shandong Province, China;3. Zhenhua Oil Limited Company,Beijing 100031, China )
Abstract:
Based on the core, well logging and production performance data, the method of hierarchy analysis combination with model matching was applied in subsurface architecture anatomy, four architecture hierarchies including composite meandering bdt,single meandering belt,single point bar and lateral accretion bodies were identified and analyzed. 3D reservoir architecture model and petrophysical property models were developed, and the numerical reservoir simulation based on 3D practical reservoir architecture model was finished. According to reservoir modeling and numerical simulation, the remaining oil distribution patterns of the meandering river reservoir controlled by different hierarchy architecture elements and development factors were summarized,which are composite meandering belt including lateral facies change and interlayer interference ,single meandering belt including interformational rhythm and abandoned channel barrier,lateral accretion bodies including lateral accretion shale bedding barrier. And the recovery ipeasures for remaining oil controlled by lateval auertion shale bedding were proposed. The results show that the lateral accretion bedding thickness in single well of Gudao Oilfield is about 0. 2 -0. 8 m, extending to 2/3 thickness of channel sandbody downward and inclining to abandoned channel, and dip angle is 5° - 10°. Coincidence rate of history matching is perfect in single well, and the remaining oil saturation data of inspection well 11J11 prove reliability of the numerical simulation result. Through drilling horizontal well on the top of the point bar between the injection and production wells,remaining oil in point bar of meandering river can be exploited effectively.
Key words:  meandering reservoir  numerical reservoir simulation  reservoir architecture  remaining oil distribution  Gudao
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