东濮凹陷沙三段储层成岩相及成岩模式  

Reservoir Diagenetic Facies and Diagenetic Pattern of Third Member of Shahejie Formation in Dongpu Sag

作　　者：宋虹玉 纪友亮[2] 周勇[2] Song Hongyu;Ji Youliang;Zhou Yong(China Petrochemical Press Co.,Ltd.,Beijing 100011;College of Geosciences,China University of Petroleum(Beijing),Beijing 102249)

机构地区：[1]中国石化出版社有限公司,北京100011 [2]中国石油大学(北京)地球科学学院,北京102249

出　　处：《中外能源》2022年第4期27-35,共9页Sino-Global Energy

摘　　要：东濮凹陷储层致密演化历史及纵横向分布规律不清,前人研究侧重于定性回剥分析储层孔隙演化,缺乏定量分析,成岩作用以点上分析为主,物性及成岩相平面分布规律研究较少。为了进一步提高研究区勘探开发效益,本文在对研究区储层成岩演化史进行分析恢复的基础上,划分了储层成岩相,建立了成岩作用综合模式。利用视压实率、视胶结率和视溶蚀孔隙度三个参数对成岩作用进行半定量研究,总结出研究区沙三段储层发育7种成岩相类型:强溶蚀相、中压实中溶蚀相、中胶结中溶蚀相、中强压实弱溶蚀相、中强胶结弱溶蚀相、强压实相和强胶结相。综合构造、沉积、成岩在时间和空间的展布特征及其对储层物性的影响,分别选取了研究区东西向和南北向两条剖面对沙三段储层的成岩模式进行了解析,对各种成岩相的形成机制和分布特征进行研究,为储层预测奠定了理论基础。Evolution history and distribution pattern of the tight reservoirs in Dongpu Sag are not known well.Reservoir pore evolution was analyzed by qualitative backstripping mainly in the previous research without quantitative analysis,diagenesis was analyzed on the point mainly,and there are less researches on physical property and plane distribution of diagenetic facies.In order to further improve the efficiency of the exploration and development in the study area,diagenetic facies of reservoirs is classified and integrated diagenetic patterns are established based on the analysis and reconstruction of diagenetic evolution history in this paper.Apparent compaction percentage,apparent cementation percentage,apparent dissolution porosity are applied to half-quantitative research on the diagenesis,and seven types of diagenetic facies developed in the third member of Shahejie Formation of the study area :strong dissolution facies,mid-compaction and mid-dissolution facies,mid-cementation and mid-dissolution facies,mid-to-strong-compaction and weak dissolution facies,mid-to-strong-cementation and weak dissolution facies,strong compaction facies and strong cementation facies.Temporal and spatial distribution characteristics of structure,sedimentation and diagenesis and their influence on physical properties of reservoirs are considered,and reservoir diagenetic patterns of the third member of Shahejie Formation are analyzed for the east-west and south-north profiles.Forming mechanism and distribution characteristics of various diagenetic facies are studied,which lays the theoretical foundation of reservoir prediction.

关 键 词：东濮凹陷 沙三段 成岩相 成岩模式 

分 类 号：P618.13[天文地球—矿床学]