库车坳陷西部古近系-白垩系主要发育古近系库姆格列木群底砂(砾)岩段、白垩系巴什基奇克组和舒善河组3套储层,这3套储层与其上覆盖层组成良好的储盖组合,目前在这几套储层中均已获得高产工业油气流,油气勘探前景广阔。研究区有利储层主要为扇三角洲前缘及辫状三角洲平原-前缘沉积的含砾砂岩、中细砂岩和粉砂岩,孔隙度大于8%的有利储层在克拉苏-大北构造带、西秋立塔格-却勒区带及其南部地区、温宿凸起北部及东缘地区广泛分布,储层储集性能主要受快速深埋、沉积相、构造作用控制。认为勘探中应尽量避开褶皱强烈的地层重复地区、高挤压应力集中区和盆地粗碎屑边缘相带等。

The clastic reservoirs mainly developed on the bottom of Palaeogene Kumugeliemu group,the Cretaceous Bashijiqike formation and Shushanhe formation,and the three sedimentary reservoirs and their overlying formation consist of good reservoir-cap assemblages.At present,industrial oil-gas streams are obtained from the three reservoirs,and the exploration potential is good.The excellent reservoirs are the fan delta front and braided delta plain-front formations which are made of Conglomeratic sand.