羊二庄油田明化镇组曲流河储集层构型精细解析  

Fine architecture analysis of meandering river reservoir in Minghuazhen formation of Yang′erzhuang oilfield

作　　者：王芮[1] 刘逸强 Wang Rui;Liu Yiqiang(Research Institute of Exploration and Development,PetroChina Dagang Oilfield Company,Dagang Oilfield,Binhai New District,Tianjin,300280,China)

机构地区：[1]中国石油大港油田公司勘探开发研究院,300280 [2]中国石油大港油田公司第二采油厂

出　　处：《录井工程》2019年第4期119-125,150,共8页Mud Logging Engineering

摘　　要：针对羊二庄油田明化镇组曲流河储集层存在的砂体横向变化大、砂泥分界认识不清、沉积物内部和沉积物之间非均质性强、剩余油挖潜难度越来越大等难题,基于河流相砂体沉积规律,结合岩心、测井、生产等动静态资料,应用现代沉积学理论,对曲流河储集层进行七、八、九级构型划分,识别出单一河道、单一点坝、单一侧积体和侧积层等级次的构型单元,并计算出单一河道的宽度、单一点坝的长度和厚度、单一侧积体的宽度以及侧积层倾角等参数。根据储集层构型精细解析结果,最终分析认为,受侧积夹层的影响,羊二庄油田明化镇组曲流河储集层点坝上部剩余油饱和度高于中下部,且驱油效率较低,为羊二庄油田下步剩余油挖潜提供了更可靠的地质依据。Targeting at problems of large lateral change of sand body,unclear understanding of sand-shale boundary,strong heterogeneity within and between sediments and growing difficulties of excavation of remaining oil in meandering river reservoir in Minghuazhen formation of Yang'erzhuang oilfield,based on the sedimentary rules of fluvial facies sand body,combined with dynamic and static data such as core,well logging,production,etc.,modern sedimentology theory is applied to divide orders into 7th,8th and 9th in meandering river reservoir.Architectural units of single river channel,single point dam,single lateral accretion body and lateral accretion bedding are identified.Parameters such as the width of single river channel,the length and thickness of single point dam,the width of single lateral accretion body,and the angle of lateral accretion bedding are calculated.According to the fine analysis results of reservoir architecture,the final analysis shows that under the influence of the lateral accretion interlayer,the remaining oil saturation in the upper part of the point dam of meandering river reservoir in Minghuazhen formation of Yang'erzhuang oilfield is higher than that in the middle and lower parts,and the oil displacement efficiency is low,which provides a more reliable geological basis for the next step of remaining oil excavation in Yang'erzhuang oilfield.

关 键 词：点坝 侧积体 侧积层 构型 剩余油 羊二庄油田 

分 类 号：TE132.1[石油与天然气工程—油气勘探]