A Simplified Procedure for Gas Deliverability Calculations Using Dimensionless IPR Curves

Abstract

ABSTRACT A new method for deliverability calculations of gas wells, which eliminates the need for conventional multipoint tests, is presented. Using the analytical solution for real gas flow under stabilized conditions, and a broad range of rock and fluid properties, an empirical relation for calculating gas well deliverability in an unfractured reservoir is developed. This relationship is similar to Vogel's dimensionless Inflow Performance Relation (IPR) for solution-gas drive reservoirs. Also developed in this study is a second empirical relation, which estimates future deliverability from current flow test data. A simple procedure for gas deliverability calculations, utilising these two relations, is suggested.