It is regarded the ascending steady flow of natural gases through the extraction column, taking into account the thermal transfer towards the adjacent formations, as well as the deviation from the perfect gases law. The resulting differential equations being non-linear, a quartic integration numeric method Runge-Kutta is used.

It is regarded the isotherm movement of gases through a porous and isotropic medium towards a central well, taking into account the deviation from the perfect gases law and the viscosity pressure variation. The resulting model, completed with the specific limit conditions, is approached through a numerical method of solving and is applied to the wells through which the gas fields are exploited at constant pressure. For the current exploitation pressures daily cumulations of gases have been determined, thus resulting the optimal value of the exploitation pressure.

It is regarded the isotherm movement of gases through a porous and isotropic medium towards a central well, taking into account the deviation from the perfect gases law and the viscosity pressure variation. The resulting model, completed with the specific limit conditions, is approached through a numerical method of solving and is applied to the wells through which the gas fields are exploited at constant flow. For the current exploitation rates of flow the variation curves of gas pressure at top of the well have been determined, thus resulting the flow maximum value after which the extraction process becomes unstable.