DefinePK

Abstract

Average reservoir pressure is a parameter of importance for design, assessment, evaluation, and exploitation of hydrocarbon reservoirs. By excellence, pressure buildup tests are intended for obtaining a measurement of this property. Recently, drawdown tests have been shown to provide the average reservoir pressure by mathematical manipulations of pressure behavior and material balance equations. In this paper, an extension of the TDS Technique is used on drawdown tests for the determination of an expression to obtain an estimation of the average reservoir pressure for horizontal wells in homogeneous and anisotropic formations using an approximation of the pressure behavior in hydraulically-fractured vertical wells. The equation was successfully tested with synthetic examples.