鄂尔多斯盆地安塞油田长10_1段储层砂岩成岩作用研究  

Diagenesis of Chang10_1 Sandstone Reservoir in Ansai Oilfield of Ordos Basin

作　　者：辛红刚[1,2] 张振红[1,2] 云正文[3] 刘晓英[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]中国石油长庆油田分公司油气工艺研究院,陕西西安710018

出　　处：《天然气地球科学》2011年第4期588-594,共7页Natural Gas Geoscience

摘　　要：根据砂岩薄片、铸体薄片、扫描电镜、X-射线衍射等分析,采用定量计算方法,对安塞油田长101段储层成岩作用进行研究。研究表明:该区长101段储层砂体成分主要以长石砂岩为主,储层砂岩处于中成岩B期,早期的压实作用、多种矿物胶结作用是造成物性变差的2个重要成岩作用,而溶蚀作用,特别是浊沸石、长石的溶蚀是储层物性变好的重要成岩控制因素。结合成岩作用类型及定量表征将该区成岩相划分为5种类型,成岩相控制了高渗储层的分布。Based on measurement of thin section, casting thin section, scanning electron microscope . and X- ray diffraction for Chang 101 sandstone reservoir, we use the quantitatively calculating methods to study the diagenesis of Chang 101 sandstone reservoir in the Ansai oilfield. The feldspar sandstone is dominant n the sandstone. The diagenesis of sandstone reservoir is fallen into the middle degree stage B. The actions for the poor-quality reservoir are both early compaction and cementation of several minerals. Dissolution （especially feldspar and laumontite dissolution） is a factor for improving the reservoir property. Considering diagenetic types and quantitative characters, five kinds of diagenetic facies are classified, the diagenetic facies control the distribution of the highly permeable reservoir.

关 键 词：安塞油田 成岩作用 成岩相 

分 类 号：TE122.2[石油与天然气工程—油气勘探]