Use of Temperature Data in Gas Well Tests

Abstract

Temperature measurements in front of sand face during gas production or well shut in might be used to estimate wellbore storage which represents one of the most important factors that affects pressure transient analysis. Pressure and temperature are changed depending on downhole flow rate; however, the pressure changes significantly while the temperature changes slightly. In gas producing well, the temperature might change due to two factors. The first factor is heating effect resulting from frictions through perforations. The second one is called Joule-Thomson effect or cooling effect.

This paper is focused on the explanations of pressure drop through the perforations due to friction and the cooling effects resulting from gas expansion after well shut in.

Key word:Temperature, Friction Heat, Joule-Thomson Effect.