Abstract:In this paper, the three-dimensional finite element model of the underground reservoir of Hutubi wall is established using the geological and geophysical data of Hutubi underground gas storage. The boundary of the gas storage model is constrained by the pressure change of the gas storage chamber. We simulate the data of the period to evaluate the reliability of the geometric model. The results show that the gas injection is similar to the respiration of the earth during the whole gas injection process and the gas production process. During the gas injection process, the ground point exponentially expands due to the pressure. During the process of gas production, the ground point of the ground surface is concentrated toward the vertical upward cover of the gas storage layer, showing a tendency to collapse inward.