【摘要】 川东嘉二段气藏的形成受沉积、成岩作用的双重控制。滩微相沉积和有利的成岩变化是油气藏形成的基础和条件，两者有机地配合可形成发育的孔隙层段、有效的生储盖组合和沉积成岩圈闭。提出了滩的组成模型和相序模型，分析了滩的古地理和层位分布规律，总结了滩的成岩演化序列。指出变浅暴露滩配之以成岩演化Ｂ序列，是气藏形成的充分必要条件；在川东天然气的勘探中，滩微相识别和成岩作用研究是一个关键。图４表１参２（邹冬平摘）更多还原

【Abstract】 The formation of gas pool in Member 2 of Jialingjiang Group, eastern Sichuan was controlled by sedimentation and diagenesis. Bank microfacies is the base and favourable diagenesis is the necessary condition for the formation of the gas pool. Combination of sedimentation and diagenesis can form favourable assemblage of oil source reservoir sealing high porous section and valuable sedimentary diagenetic traps. The composition model and facies sequence model of bank are built up, and palaeogeographic distribution and diagenetic sequence of bank are put forward in this paper. The combination of the shallow exposed bank and favourable diagenetic sequence (B) is the necessary condition for the formation of the gas pool.更多还原