underground gas storage

The mathematical model of nonstationary gas filtration in porous plane layer under small perturbations of gas pressure is considered. We have obtained the linearized filtration equation with the coefficients depending on the parameters of the porous medium, the thermodynamic characteristics of gas and the value of unperturbed pressure in the layer. A problem of kinetics of equalization of pressure in the layer in the case of small local perturbations was formulated. Using the Green function, we have obtained an analytical solution of the problem.

Purpose. Safe and reliable exploitation of underground gas storages (UGS) involves monitoring of the vertical displacements of the earth’s surface of gas storage. For the operation of underground storage people construct the gas compressor station, which serves to discharge and sample the gas from the reservoir bed through the exploitation wells, which are directly related to gas-compressor plant through the appropriate technological equipment and gas flow-lines.