Abstract
Flow of gas through porous media at high velocity is affected by inertial forces resulted from convective acceleration of fluid particles in the medium, as well as viscous force, as explained by Darcy's equation. The inertial force further develops the additional skin effect, reducing gas production rate. At early stages of production, the pressure drop in the near-well region builds up the molar content of water in gas. This, in turn, results in water vaporization and hence a drop in the connate water saturation. Considering the fact that inertial force is a function of the non-Darcy coefficient, β, which itself is dependent on connate water saturation, this can ultimately reduce the non-Darcy component of pressure drop and therefore inertial forces. The present study focuses on the enhancement of gas well productivity through water vaporization.
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