IN APPROACHING THE CHARACTERISTICS AND THE FORMATIVE MECHANISM OF SECONDARY GAS POOLS IN MIDDLE JURASSIC SERIES WITHIN THE XIAOQUAN STRUCTURE OF WEST SICHUAN

On the basis of tectonic and geological analysis,the characteristics and the formative mechanism of the Jurassic secondary gas pools within the Xiaoquan Structure of West Sichuan are discussed in this paper.The researches suggest that such a type of gas pools is related to the geological factors of fault,fracture and formation pressure etc.