川西坳陷成岩矿物相带对砂岩储集性能的控制作用  

INFLUENCE OF DIAGENETIC MINERAL FACIES BELTS ON THE ACCUMULATION PROPERTIES OF SANDSTONE IN THE WESTERN SICHUAN DEPRESSION

作　　者：饶丹[1] 周东升[1] 贾存善[1] 

机构地区：[1]中国石化石油勘探开发研究院无锡实验地质研究所,江苏无锡214151

出　　处：《石油实验地质》2002年第2期126-129,共4页Petroleum Geology & Experiment

摘　　要：川西坳陷中段沙溪庙组砂岩储层极具非均质性,现今砂岩储集物性的优劣主要受成岩矿物相带的控制,其中以绿泥石-沸石成岩矿物相带为主体,高岭石成岩矿物相带为次,是研究区内有利于次生孔隙发育的成岩相标志,而板状碳酸盐成岩矿物相带以及石英增生成岩矿物相带则是砂岩致密化的重要标志。The sandstone reserviors show severe heterogeneity in the Shaximiao Fr.in the central part of the Western Sichuan Depression. The accumulation properties of the reservoirs are mainly controlled by diagenetic mineral facies belts. The development of secondary porosity is indicated by the chloritezeolite facies belt and the kaolinite facies belt. And where the plate carbonate and quartz overgrowth diagenetic mineral facies belts are developed, the sandstone is with compact texture.

关 键 词：川西坳陷 成岩矿物 相带 砂岩 储集性能 控制作用 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]