The main production area is located in the southeastern part of the Sichuan Basin around the five cities of Zigong, Zhangzhou, Leshan, Neijiang and Yibin. China’s shale gas reserves are ranked # 1 in the world, but geological conditions render exploitation difficult. In the above area, production has now reached 11 mill cubic meters per day, accounting for about 4.2 % of China’s natural gas production.
Japan JST China news release, December 27, 2018