塔中地区石炭系碎屑岩储集空间类型有粒间孔及溶蚀扩大粒间孔、粒内溶孔、铸模孔、次生孔洞和微孔隙；孔隙结构类型有大孔粗喉型、中孔中粗喉型、中小孔中细喉型以及微孔细喉型；储层类型可分为好－极好储层、中等储层、差储层与非储层。该区石炭系碎屑储集层包括ＣⅠ油组和ＣⅡ油组。ＣⅠ油组主要为扇三角洲平原分流河道沉积，常形成好到极好的优质储层。ＣⅡ油组可划分为４个不同的沉积相段，其中陆上河流沉积主要为中等到差储层，河口湾沉积和海岸平原－辫状河道沉积主要为好－中等储层与中等－差储层互层，滨岸沉积主要为好－中等储层。 There are intergranular pores and dissolution and enlargement of intergranular pores, intragranular dissolution pores, mold pores, secondary pores and micropores in the Carboniferous clastic reservoirs in the Tazhong area. The types of pore structures are macropore and throat type, mesopores Middle and small holes in the throat type and microporous throat type; reservoir type can be divided into good - excellent reservoir, medium reservoir, poor reservoir and non-reservoir. Carboniferous clastic reservoirs in this area include CⅠ oil group and CⅡ oil group. The CⅠ oil group is mainly distributary channel sedimentation in fan delta plain, often forming a good high-quality reservoir. The CⅡ oil group can be divided into four different sedimentary facies sections, of which the onshore river sediments are mainly middle-to-poor reservoirs, estuarine sediments and coastal plain-braided channel sediments are mainly good-medium reservoirs and medium-poor reservoirs Layers of interbeds, coastal sediments are mainly good - medium reservoirs.