根据大量的钻井资料及岩心、薄片分析并结合测井和生产测试资料，探讨了塔里木盆地库车坳陷大北地区白垩系巴什基奇克组储层特征及其控制因素。研究认为，库车坳陷大北地区白垩系巴什基奇克组砂岩以长石岩屑砂岩、岩屑长石砂岩为主,次为岩屑石英砂岩和岩屑砂岩；储层发育原生粒间孔、粒间溶孔、少量长石、岩屑粒内溶孔、溶蚀逢、构造缝和微孔隙等储集空间，属特低孔特低渗储集层，裂缝的异常发育为这种特低孔特低渗深部储层的高产提供了基础，在成岩阶段后期的改造作用及构造作用下，其储集条件明显变好，影响该区储层发育的控制因素有沉积微相、成岩作用、构造作用、膏岩层、异常高压和埋藏深度等，其中构造挤压和溶蚀作用是其主控因素。

According to massive drilling data, core samples, thin slice analysis, well logging and production tests, this paper studies the characteristics and control factors of the Lower Cretaceous Bashijiqike Formation sandstone in the Dabei region, Kuche sag, Tarim basin. The rock type is dominantly the feldspar lithic sandstone and the rock debris arkosic sandstone in the Dabei region, to a lesser extent, the rock debris silicarenite and the lithic sandstone. The reservoir spaces include primary intergranular pores, intergranular dissolution pores, few feldspar and lithic dissolution pores, corrosion splits, build joints and micropores, and it is low porosity to extra-low permeability reservoir. The unusual growth of cracks provides the base for the high production of deep-burial low porosity to extra\|low permeability reservoirs. The conditions of the deep\|burial reservoirs are improve obviously after the later period diagenesis and tectonism. The controlling factors of the reservoir development include sedimentary micro-facies, diagenesis, tectonism, rock salt layer, abnormally high pressure and the burial depth, and structure extrusion and corrosion are the key control factors.