and the dragon stream group of shale in the Lower Silurian series is considered as the most favorable layers for the development of shale gas. There is a humongous gas reserve in Neijiang-Luzhou-Yibin region. Shale gas exploration has gained high-yield commercial production in the Longmaxi Formation in the Changning-Weiyuan region of the Sichuan Basin [2] and Jiaoshiba region [3].