摘要
【研究目的】我国东部油田普遍进入开发中后期,剩余油分布复杂,储层内部的渗流屏障和渗流差异控制形成的剩余油是油田开发挖潜的主要目标。开展藏储层构型及其控制的剩余油分布特征研究可有效提升油藏的开发效果。【研究方法】以黄骅坳陷港中NS断块沙三段为研究对象,综合应用岩心、测井、地震等资料,通过沉积微相展布特征分析,研究单一沉积单元及内部构型单元特征及空间组合关系,刻画隔夹层分布特征,建立储层构型模式和三维地质模型,以此为基础进行油藏数值模拟研究,刻画剩余油分布特征。【研究结果】通过研究明确了远岸水下扇储层的构型单元类型与构型级次,确定了研究区储层构型单元分布特征,总结了基于构型的剩余油分布样式。研究显示远岸水下扇储层构型界面及被这些界面所分割的不同级次构型单元,控制了剩余油的宏观分布;单一微相级次构型单元具有4种分布模式及组合样式,分别为朵叶主体-朵叶主体、朵叶侧缘-朵叶侧缘、朵叶体-水道间-朵叶体、朵叶体侧向切叠;总结出远岸水下扇沉积的储层构型因素主控下的5种剩余油分布样式,并在现场井位部署实践中得以应用。【结论】基于研究区构型研究成果认识,应用数值模拟完成远岸水下扇储层构型对剩余油分布的控制作用分析研究,总结得到远岸水下扇5种剩余油分布样式,对我国东部类似油藏的后期开发,提高油藏剩余油采出程度具有借鉴意义。
This paper is the result of petroleum geology.[Objective]The oil fields in eastern china have generally entered the middle and later stages of development,the distribution pattern of remaining oil is very complex,the remaining oil formed by the internal seepage barrier and seepage difference control within the reservoir is an important goal,conducting research on the distribution characteristics of residual oil controlled by reservoir configuration can effectively improve the development efficiency of oil reservoirs.[Methods]The research area is located in the third member of Shahejie Formation in Gangzhong of Huanghua Depression,Analyzing and researching through data such as rock cores,logging,and seismic data,analyze the distribution characteristics of sedimentary microfacies,the characteristics and spatial combination relationships of single sedimentary units and internal configuration units,and distribution characteristics of interlayer,establish a reservoir configuration model and a three-dimensional geological model,based on which to conduct numerical simulation research on the reservoir and characterize the distribution characteristics of remaining oil.[Results]The study clarified the types and levels of configuration units in the offshore underwater fan reservoirs,determined the distribution characteristics of reservoir configuration units in the study area,and summarized the remaining oil distribution patterns based on configuration.Research has shown that the configuration interfaces of offshore underwater fan reservoirs and the different levels of configuration units divided by these interfaces control the macroscopic distribution of remaining oil;The four distribution patterns and their combination patterns of single microfacies in this area are defined,they are the main body of alluvial lobes-the main body of alluvial lobes,the lateral edge of alluvial lobes-the lateral edge of alluvial lobes,the alluvial lobes-the inter-channel mudstone-the alluvial lobes,the lateral cutting and stacking of alluvial
作者
孟庆龙
成亚斌
滕菲
李健
吴刚
赵林丰
MENG Qinglong;CHENG Yabin;TENG Fei;LI Jian;WU Gang;ZHAO Linfeng(Tianjin Institute of Geology and Mineral Resources(North China Geological Science and Technology Innovation Center),Tianjin 300170,China;Dagang Oilfield Company PetroChina,Tianjin 300280,China)
出处
《华北地质》
2024年第1期66-76,共11页
North China Geology
基金
中国地质调查局项目:“氦气资源调查评价与示范”(DD20221668)
“华北地台及周缘页岩油气地质调查与评价”(DD20242607)中国石油大港油田公司科研项目“大港探区铀矿、氦气等新能源检测与潜力评价研究”(H2302)联合资助。
关键词
远岸水下扇
储层构型
夹层分布
剩余油
黄骅坳陷
far shore subaueous fan
architecture
distribution of interlayer
remaining oil
Huanghua Depression
