三塘湖盆地马朗凹陷火山岩储层成岩作用及成岩演化特征  

Diagenesis and Diagenetic Evolution of Volcanic Rocks in Malang Sag of Santanghu Basin

作　　者：齐东岩[1] 邢贝贝[1] 张惠瑜[2] 

机构地区：[1]东北石油大学,大庆163318 [2]中国石油青海油田公司勘探开发研究院,敦煌736202

出　　处：《科学技术与工程》2012年第12期2959-2963,共5页Science Technology and Engineering

基　　金：中国石油天然气股份有限公司专题项目(2008B-0101)资助

摘　　要：通过大量的野外剖面观察、钻井岩心描述,结合室内薄片鉴定、地球化学元素测定和扫描电镜分析,确定了三塘湖盆地马朗凹陷石炭系火山岩的成岩演化。其阶段分为同生成岩阶段、表生成岩阶段和埋藏成岩阶段,以及交代作用、充填作用等多种成岩作用类型。冷凝收缩作用、挥发逸散作用、溶解作用、风化作用和构造作用是使储层物性变好的主要成岩作用。熔结作用、压实作用、交代作用、充填作用是使储层物性变差的主要成岩作用。The field profile observed,drilling cores description,combined with the indoor thin section and geochemical element determination and scanning electron microscopy the Carboniferous volcanic rocks in the diagenetic evolution Santanghu basin Malang depression stage is analysed to determine which is divided into syndiagenetic stage,epidiagenesis stage and buried diagenetic stage,metasomatism,filling the role of a variety of diagenetic types.Condensing shrink volatile fugitive role,dissolution,weathering and tectonic are the main diagenesis which make reservoir properties to get better change;sintered role,compaction,metasomatism,filling role are the main diagenesis which make reservoir properzies to get bad change.the deterioration of reservoir properties main diagenesis.

关 键 词：火山岩 成岩作用 三塘湖盆地 成岩阶段 

分 类 号：TE122.222[石油与天然气工程—油气勘探]