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吉木萨尔凹陷仓房沟群火山砂岩的典型成岩反应及其物性特征
石油与天然气地质
1992年 13卷 第No.2期
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Title
TYPICAL DIAGENETIC REACTIONS AND PHYSICAL PROPERTY OF VOLCANIC SANDSTONE IN CHANGFANGGOU GROUP,JIMOSAL DEPRESSION
Authors
Lou Zhanghua
Zhao Xiafei
摘要
近地表碳酸盐化和浅埋藏水化水解,使火山砂岩在压实前固结,其中的粒间孔隙被以蒙脱石为主的自生粘土矿物充填或分割。决定孔隙水性质和形成自生粘土矿物及沸石等离子,来自火山砂岩本身。火山砂岩的典型成岩反应是水化水解和脱水反应,决定了孔隙水的性质、成岩矿物组合和储层的物性。
Abstract
The volcanic sandstone had been cemented by calcitization near the ground and by shallow buried hydration-hydrolysis,the intergranular pores of which were filled and separated by authigenic clay minerals.The typical diagenetic reactions of the volcanic sandstone were hydration-hydrolysis and dehydration which decided the property of pore water,the assemblage of diagenetic minerals and the physical property of the reservoir bed.
关键词:
准噶尔盆地;
火山砂岩;
水化水解作用;
脱水作用;
储层物性;
孔隙组合;