摘要
根据大量岩石薄片、X衍射、扫描电镜、压汞试验等资料,对渤中地区第三系馆陶组-沙河街组碎屑岩储层成岩作用及孔隙演化进行了研究,并在此基础上划分了成岩阶段,初步探讨了其成岩模式.研究结果表明,渤中地区第三系碎屑岩储层处于早成岩期B阶段-晚成岩期A阶段,局部达到晚成岩期B阶段初期;储层的岩石性质及成岩程度有利于次生孔隙的发育.由于长石溶蚀形成次生孔隙时伴随大量自生高岭石的生成,故自生高岭石高含量带可作为寻找次生孔隙发育带的标志.
Based on a vast amount of data from thin section,X ray diffraction,SEM and mercury penetration analysis,reservoir diagenesis and porosity evolution are studied for Tertiary Guantao Shahejie Formation sandstones in Bozhong area,recognizing some diagenetic stages and resulting in a primary diagenetic model.It is indicated that the Tertiary sandstone reservoir has been in early diagenetic B stage to burial diagenetic A stage,with parts even in burial B stage,and that the lithology and diagenetic stages of the Tertiary reservoir are advantageous to the development of secondary porosity.The high content of authigenic kaolinite can be used as an indicator of secondary porosity zones,since much authigenic kaolinite may be produced contemporaneously when feldspar solution has resulted in development of secondary porosity.
出处
《中国海上油气（地质）》
2001年第2期111-119,共9页
China Offshore Oil and Gas(Geology)
关键词
渤中地区
第三系
碎屑岩储层
成岩作用
研究
油气储层
Bozhong area
diagenesis
secondary porosity
authigenic kaolinite
Tertiary
sandstone reservoir
