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胜坨油田沙河街组二段三角洲相储层特征及影响因素
引用本文:刘卫红,杨少春,林畅松,王瑞丽,冯建伟. 胜坨油田沙河街组二段三角洲相储层特征及影响因素[J]. 西安石油大学学报(自然科学版), 2006, 21(2): 9-14
作者姓名:刘卫红  杨少春  林畅松  王瑞丽  冯建伟
作者单位:1. 中国地质大学,能源学院,北京,100083
2. 中国石油大学地球资源与信息学院,山东,东营,257061
3. 中海石油有限公司湛江分公司技术部,广东,湛江,524057
摘    要:胜坨油田沙河街组二段是主力产油层系,随着开发的深入,出砂、水窜等情况日益严重.因而,对其储层特征进行研究有助于进一步开发.通过对取芯井段的岩石薄片、岩心铸体薄片观察,结合沉积微相及储层物性资料的对比分析,对沙河街组二段下部三角洲相储层砂岩的岩石学特征、物性特征、成岩作用等作了较为详细的研究.研究表明胜坨油田沙二段三角洲相储层总体上为一套砂(砾)岩体,岩性以粉细砂岩为主,成分成熟度及结构成熟度均较低,但储层孔渗性较好,属于高孔高渗性储层.影响沙二段储层物性的影响因素很多,其中沉积相带对储层物性起控制作用;岩性特征对储层物性影响也较大;成岩作用对储层物性也有一定的影响,压实作用是导致原生孔隙度减小的主要原因,颗粒及胶结物的溶蚀是产生次生孔隙的主要因素.

关 键 词:胜坨油田  储层特征  沉积相带  成岩作用
文章编号:1673-064X(2006)02-0009-06
修稿时间:2005-04-28

Reservoir feature of the delta facies in the second member of Shahejie formation, Shengtuo Oilfield and its influencing factors
LIU Wei-hong,YANG Shao-chun,LIN Chang-song,WANG Rui-li,FENG Jian-wei. Reservoir feature of the delta facies in the second member of Shahejie formation, Shengtuo Oilfield and its influencing factors[J]. Journal of Xian Shiyou University, 2006, 21(2): 9-14
Authors:LIU Wei-hong  YANG Shao-chun  LIN Chang-song  WANG Rui-li  FENG Jian-wei
Affiliation:LIU Wei-hong1,YANG Shao-chun2,LIN Chang-song1,WANG Rui-li3,FENG Jian-wei2
Abstract:The second member of Shahejie formation is the main oil-production formation in Shengtuo Oilfield, and its reservoir characteristics must further be studied due to the serious sand flow and water-breakthrough caused by development. The lithologic characteristics, physical properties and diagenesis are studies in detail based on the observation of rock thin-section and core casting thin-section, and the analysis of sedimentary microfacies and reservoir properties. The study shows that, the reservoir is a set of sandstone body, its lithology is mainly siltstone, its compositional maturity and structural maturity are all lower, and it is high-porosity and high-permeability reservoir. There are many factors of influencing the physical property of the reservoir, among them, sedimentary facies belt has controlling effect; the lithologic characteristic has also greater effect; diageneses have a little effect, compaction is the major factor causing the decreasing of primary porosity, and the corrosion of particle and cenmenting matter is the main factor generating secondary pore.
Keywords:Shengtuo Oilfield  reservoir feature  sedimentary facies belt  diagenesis
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