高邮凹陷阜三段砂体展布特征及控砂模式  

Distribution characteristics and sand control modes of sandbodies in E_(1)f_(3)of Gaoyou Sag

作　　者：李储华[1] 郑元财[1] 刘志敏 吴峰[1] LI Chuhua;ZHENG Yuancai;LIU Zhimin;WU Feng(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司勘探开发研究院,江苏扬州225009

出　　处：《复杂油气藏》2022年第1期17-22,共6页Complex Hydrocarbon Reservoirs

基　　金：中国石化科技攻关项目“高邮凹陷断裂体系控藏机理及有利区带研究”(P19027-3);江苏油田科技项目“苏北盆地低勘探发现领域潜力分析及预探目标研究”(JS20003)。

摘　　要：高邮凹陷阜三段(E_(1)f_(3))是江苏油田复杂小断块油藏勘探的主要领域,也是隐蔽油藏拓展的重要阵地。基于岩心观察,结合粒度和电测曲线特征分析等,开展高邮凹陷E_(1)f_(3)沉积微相、砂体展布特征与规律研究,总结控砂模式,提出高邮凹陷E_(1)f_(3)发育河流作用控制的水下分流河道、河口坝和水下分流河道间湾,湖浪作用控制的滩砂、坝砂,以及陡坡带重力滑塌控制的近岸水下扇水道等3类6种沉积微相。物源条件、动力机制和构造格局共同控制了沉积微相及砂体展布,形成斜坡带控砂和断裂带控砂两类模式;斜坡带发育河流控砂和湖浪控砂两种模式,断裂带发育断坡控砂和陡坡控砂两种模式。E_(1)f_(3)砂体展布及控砂机制分析为高邮凹陷E_(1)f_(3)隐蔽型油气藏勘探指出方向,为资源接替奠定了基础。The Gaoyou Sag’s third member of the Funing Formation(E_(1)f_(3))is the main field for the exploration of Jiangsu Oilfield’s complicated and small fault-block reservoirs,as well as an essential position for the extension of subtle reservoirs. It was investigated on the sedimentary microfacies,sandbody distribution features,and laws of E_(1)f_(3)in Gaoyou Sag and its sand control model was summarized,based on core observations,combined with analysis of grain size and electrical curve characteristics,etc. It is proposed that in E_(1)f_(3)of Gaoyou Sag,there are 3 types and 6 kinds of sedimentary microfacies developed,including underwater distributary channel,mouth bar,and underwater distributary channel bays controlled by fluvial action,beach sandbody and bar sandbody controlled by lake wave action,and nearshore underwater fan channels controlled by gravity slump in the steep slope zone,etc. The distribution of sedimentary microfacies and sandbodies is concurrently controlled by provenance circumstances,dynamic mechanisms,and tectonic patterns,generating two types of sand-controlling modes in slope zones and fault belts. In the slope zone,there are two types of sand control by rivers and waves,and two modes of sand control by faults and slopes in the fault zone. The analysis of E_(1)f_(3)sandbody distribution characteristics and sand-controlling mechanism lays the foundation for the exploration of E_(1)f_(3)subtle reservoirs in Gaoyou Sag.

关 键 词：沉积微相 砂体展布特征 控砂模式 阜三段 高邮凹陷 

分 类 号：TE132[石油与天然气工程—油气勘探]