CO_2注入砂岩后的典型自生矿物组合  

TYPICAL AUTHIGENIC MINERAL ASSEMBLAGES AFTER CO_2 INJECTED INTO SANDSTONE

作　　者：李福来[1] 刘立[1] 曲希玉[1] 赵国祥[1] 刘娜[1] 张丽媛[1] 于志超[1] 

机构地区：[1]吉林大学地球科学学院,长春130061

出　　处：《海洋地质与第四纪地质》2009年第6期103-109,共7页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金项目(40672074);教育部博士点基金项目(20070183137)

摘　　要：CO2充注将对储集砂岩进行改造,充注早期会引起一些碎屑矿物和早期自生矿物的溶蚀、溶解,形成次生孔隙,并生成某些自生矿物。不同研究区,CO2注入后的自生矿物组合不尽相同,本文主要研究片钠铝石+高岭石、片钠铝石+铁白云石±菱铁矿、只有片钠铝石和不出现片钠铝石的典型自生矿物组合,对不同的组合进行分析,并讨论其形成原因。CO2 injection will transform sandstone reservoirs.The early filling will lead to corrosion,dissolution,and formation of some detrital minerals of secondary porosity and also generate some authigenic minerals.For different research areas,the authigenic mineral assemblages are different after CO2 injection.In this article,there are some typical authigenic mineral assemblages,including dawsonite + kaolinite,dawsonite + dolomite ± siderite,but only dawsonite and non dawsonite are researched.Then,the authors ana...

关 键 词：CO2 自生矿物 片钠铝石 

分 类 号：P571[天文地球—矿物学]