Abstract: The gas reservoir in the 2nd Xu Member is a fractured sandstone, with fractures caused and controlled by geomechanics. Formed under the force of contortion, the gas field takes a S configuration. It lies between the Jiangyiu depression and the Duan depression, with its highly permeable zone (or densely fractured zone) distributed at the southeastern flank of the anticline near the hinge line. Data from well testing and gas production have proved the prediction.