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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）
The formation of gas reservoirs in the second member of Jiandong of Sichuan Province is controlled by sedimentation and diagenesis. The sedimentary facies and favorable diagenesis changes are the foundation and conditions for the formation of oil and gas reservoirs. Both of them can organically cooperate to form developed pore intervals, effective reservoir-cap assemblage and sedimentary-diagenetic traps. The compositional model and phase sequence model of the bank are proposed. The palaeogeography and horizon distribution of the bank are analyzed, and the diagenetic evolution sequence of the bank is summarized. It is pointed out that it is necessary and sufficient for formation of gas reservoirs that the shallow exposed beach should be matched with diagenesis evolution B sequence. In the exploration of natural gas in eastern Sichuan, the study on the recognition and diagenesis of the beach facies is a key issue. Figure 4 Table 1 Reference 2 (Zou Dongping pick)