RESERVOIR CHARACTERISTICS OF JURASSIC SHAXIMIAO FORMATION, WESTERN SICHUAN BASIN  

作　　者：王丽英[1] 王琳[1] 张渝鸿 徐苗[3] 

机构地区：[1]中国石油西南油气田公司勘探开发研究院 [2]中国石油集团川庆钻探公司地质勘探开发研究院 [3]西南石油大学地球科学与技术学院

出　　处：《天然气勘探与开发》2014年第1期I0001-I0007,9,共7页Natural Gas Exploration and Development

摘　　要：研究表明，川西地区沙溪庙组储层主要储集岩为长石砂岩、岩屑长石砂岩，其次为岩屑砂岩、长石岩屑砂岩及岩屑石英砂岩。储集空间分为孔、缝，其中主要储集空间为粒间溶孔，其次为残余粒间孔和粒内溶孔。喉道类型以管状和粒间裂隙为主，属细一微喉型。储层孔隙结构差，具有孔隙小、喉道窄、有效连通孔隙体积小和中一高排驱压力的特征，总体属于低一中孔、低一中渗，局部存在高孔高渗的常规储层，非均质性强。在此基础上通过对储层发育控制因素、储集砂体展布及有利储集区带的研究，为川西沙溪庙组的油气藏勘探开发提供了重要支撑。Our study shows that （ 1 ） the Shaximiao reservoir, western Sichuan Basin, is mainly composed of arkose and lithic ar- kose, and litharenite, feldsparthic and lithic quartz sandstone for the second; （2） the reservoir space includes pore and fracture, and in- tergranular dissolution pore for the main one whereas residual intergranular pore and intragranular dissolution pore for the second ones; （3） the throat type dominantly contains tubular and intergranular fissures, which belong to fine- to micro-throat ones; （4） its porous structure is poor, which is characterized by small pore and shallow throat, small volume of effectively connecting pore, and medium to high drainage pressure; and （5） this reservoir is mostly featured by low to medium porosity and permeability, partly high porosity and per- meability, and strong heterogeneity. In addition, the factors controlling its growth, the sandbedy distribution, and the favorable reservoir belts are further studied. These results may provide an important support for exploration and development of Shaximiao reservoir.

关 键 词：《天然气勘探与开发》 英文摘要 期刊 编辑工作 

分 类 号：G353.23[文化科学—情报学]