| A new model has been developed by combining the gas reservoir deliverability equation for a reservoir and the well flow equation.; An existing computer program was modified to determine gas production from reservoir against constant wellhead pressure.; Upon completion, a unique, simple, and user friendly model was developed, that will allow the user to predict the performance of the gas reservoir against a constant wellhead pressure.; The new model was used to generate and introduce a new set of production decline type curves, which can be utilized to forecast gas production rates under constant wellhead pressure condition.; The impact of the well tubing length and tubing size on the shape of the type curves were studied. |
