鄂尔多斯盆地某区块延长组长6_3油层孔隙结构特征及成岩作用  

Diagenes and pore structure features of the Chang-6_3 Reservoir in one District,Ordos Basin

作　　者：王菲菲[1] 宋元威[1] 

机构地区：[1]西安石油大学油气资源学院,陕西西安710065

出　　处：《内蒙古石油化工》2008年第5期177-180,共4页Inner Mongolia Petrochemical Industry

摘　　要：通过研究区内大量岩心铸体薄片及物性等资料分析,对研究区延长组长63储集层孔隙类型及储层主要孔隙结构特征等进行了深入研究,结果表明:孔隙类型主要有残余粒间孔、粒间溶蚀孔隙、长石岩屑粒内溶孔、胶结物内溶蚀孔隙和杂基内微裂隙等几种。对储层不利的成岩作用有:压实和压溶作用、绿泥石薄膜胶结作用和自生矿物充填作用;仅有溶蚀作用改善了部分孔隙结构,导致部分孔喉变大,连通性变好。By analyzing the data of drilling cores, costing thin sections as well as physical property,pore types and the main structure of the pores of Chang 63 reservoir are studied in research district, The resuit indicates that the types of pores include remaining intergrain pores, intergrain corroded pores, intergrain corroded pores of feldspathic mineral cutting, corroded pores in cement ,micro cracks in matrix and so on. The adverse diagenes to the reservoir involves the compression, pressure solution,chlorite membrane cemetation and authegenic mineral filling ;Dissolution improve part of pore structure,resulting pore throat get big and connectivity get better.

关 键 词：鄂尔多斯盆地 延长组 孔隙结构 成岩作用 

分 类 号：P618.130.2[天文地球—矿床学] TD712.2[天文地球—地质学]