海上浅水辫状河三角洲内部储层精细解剖与应用——以渤海P油田为例  

Fine interpretation and application of internal reservoirs in shallow water braided river delta:a case study of Bohai P Oilfield

作　　者：孟云涛 刘建华 韩建斌 韦红 梁世豪 杨青 MENG Yuntao;LIU Jianhua;HAN Jianbin;WEI hong;LIANG Shihao;YANG Qing(Tianjin Company,CNOOC(China)Co.,Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《石油地质与工程》2025年第1期67-73,共7页Petroleum Geology and Engineering

基　　金：国家重大科技专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。

摘　　要：渤海P油田为海上浅水辫状河三角洲油田,断裂系统复杂,储层砂体形态与分布预测困难,随着油田进入开发中后期,精细解剖储层内部构型成为制约油田进一步挖潜的关键因素。利用地震正演模拟,建立辫状河内部心滩、河道组合模式和储层不连续边界的判别标准,优选不同种类地震属性刻画砂体不连续边界,并综合井震资料精细解剖储层内部结构,准确表征不同级次辫状河道展布特征,形成多期次沉积微相图,揭示储层砂体的剖面和垂向结构模式,从而为后期油田开发方案的优化和水平井位部署提供指导。Bohai P oilfield is an offshore shallow water braided river delta oilfield,with a complex fault system and big difficulty in prediction of reservoir sand body morphology and distribution.As the oilfield enters middle-late stage of development,the fine interpretation of internal reservoirs becomes a key factor restricting the further exploration.By using seismic forward modeling,the criteria for distinguishing the combination of sandbars and river channels within braided rivers,as well as the discontinuous boundaries of reservoirs were established,and different types of seismic attributes to characterize discontinuous boundaries of sand bodies were optimized.Through the comprehensive research of well-seismic data,the fine interpretation of reservoir internal structure accurately characterizes the distribution characteristics of braided river channels of different levels,and the multi-stage sedimentary microfacies map is formed,revealing the profile and vertical structural patterns of reservoir sand bodies,and providing a good guidance for oilfield development plans and horizontal well position deployment in later stage.

关 键 词：浅水辫状河三角洲 地震属性 正演分析 不连续边界 储层精细解剖 

分 类 号：TE51[石油与天然气工程—油气田开发工程]