Abstract: This paper analyzed the main factors controlling shale gas enrichment in the Wufeng Formation–Longmaxi Formation
based on the basic geological characteristics of the Jiaoshiba area in the Fuling shale gas field. The study’s results indicate both
that the high-quality shale of the deep-water continental shelf facies in the Wufeng Formation–Longmaxi Formation is beneficial
to the generation of shale gas and that the organic matter abundance of shale is positively correlated with its gas content, as it provides
the material basis for the enrichment of shale gas. A higher organic matter abundance and a moderate degree of thermal
evolution are favorable for the development of organic pores, which provide a favorable reservoir space for the accumulation of
shale gas. Good roof and floor conditions and the formation of an over-pressure separate compartment provide good preservation
conditions for shale gas enrichment, which serves as the key factor controlling the enrichment and high productivity of shale gas.

Key words: shale gas, enrichment condition, main factor, Wufeng Formation-Longmaxi Formation, Fuling shale gas field