川东石炭系气藏发现于1977年10月。经勘探和综合研究证实,它是界于两个侵蚀面之间的碳酸盐岩中形成的。石炭系沉积时受古构造的控制比较明显,沉积环境以潮间带为主。储集条件在川东中部最好,北部次之,南部显著变差。气藏类型以背斜层状型为主,也有断层圈闭,地层超复和残丘型气藏。 Eastern Sichuan Carboniferous gas reservoir was discovered in October 1977. The exploration and comprehensive study confirmed that it is formed in the carbonate between the two erosion surface. Carboniferous sediments dominated by palaeostructures are obvious, the sedimentary environment mainly intertidal zone. The storage conditions are best in the central part of eastern Sichuan Province, followed by the northern part, and significantly worse in the southern part. The types of gas reservoirs are mainly anticlinorial strata, fault traps, strata overtopping and residual hillside gas reservoirs.