MULTIPHASE WELL TESTING IN BOUNDED RESERVOIRS

Abstract

Well testing in gas and multi-phase (Volatile oil & Gas condensate) reservoirs cannot be analyzed in the same way of oil reservoirs as the gas properties and phases saturations and properties are functions of reservoir pressure. using pseudo-time and pseudo-pressure functions for gas and multiphase systems considers the properties variation and gives an equivalent incompressible fluid behavior. This is a comprehensive study of applying different types of time functions (Real time, Agarwal pseudo-time and Fraim pseudo-time) on dry gas and multiphase systems to conclude guidelines to help to determine the most suitable time function that gives most accurate value of certain well test parameter under certain reservoir boundary condition for both of dry gas and multiphase systems.