肇州油田北部扶杨油层沉积微相研究  

Study on sedimentary microfacies of the Fuyang reservoir in the north of the Zhaozhou Oilfield

作　　者：戴跃进[1] 钟建华[1,2] 肖芳伟[2] 

机构地区：[1]中科院广州地球化学研究所,广东广州510640 [2]中国石油大学,山东东营257061

出　　处：《特种油气藏》2010年第5期40-43,共4页Special Oil & Gas Reservoirs

基　　金：国家油气重大专项"肇州油田北部扶杨油层储层特征研究"(2008ZX05014-002)部分成果

摘　　要：肇州油田北部扶杨油层沉积属浅水湖泊-三角洲体系,发育有浅水湖泊三角洲相和湖泊相。通过精细岩心观察和单井相分析,识别出水下分流河道、水下天然堤、水下决口扇、水下分流间湾、河口坝、前缘薄层席状砂,滨湖泥滩、混合滩、砂滩,浅湖砂坝、浅湖泥等沉积微相类型。其中,河口坝相对不发育是该区沉积体系最为显著的特征。在对以上各种沉积微相特征进行精细研究基础上,通过详细的储层物性特征研究,根据录井油气显示、地层测试、试油资料及开发动态资料分析,确定了水下分流河道砂、水下决口扇砂体、前缘席状砂和滨浅湖滩坝砂等主要储集砂体类型,为扶杨油层的储层评价与预测提供了有力依据。The deposition of the Fuyang oil reservoir in the north of the Zhaozhou Oilfield belongs to shallow lacustrine-delta system,where developed shallow lacustrine-delta facies and lacustrine facies. Meticulous core observation and single well facies analysis have identified various sedimentary microfacies,including subaquatic distributary channel,subaquatic natural levee,subaquatic crevasse splay,subaquatic interdistributary embayment,mouth bar,frontal thin sand sheet,lakeshore mudflat,mixed beach,sand bank,shallow lacustrine sand bar,and meare mud. The most conspicuous feature in this sedimentary system is relatively undeveloped mouth bar. Four major types of sand body are determined based on the studies of sedimentary microfacies and petrophysical properties as well as analysis of oil and gas shows in mud logging,formation test,well testing and production performance data,including subaquatic distributary channel sand,subaquatic crevasse splay sand,front sheet sand,and shore-shallow lacustrine beach bar sand,which provide strong basis for the Fuyang reservoir evaluation and prediction.

关 键 词：沉积微相 砂体类型 扶杨油层 肇州油田 

分 类 号：TE121.3[石油与天然气工程—油气勘探]