The Role of Pressure Transient Analysis in Reservoir Characterization - An Integrated Approach

Abstract

SUMMARY Most reservoirs exhibit complex variations of sand continuity, thickness, structural patterns, and pore space attributes (permeability, porosity, and capillary pressure properties). The most effective way to identify and quantify rock framework and pore-space variations, is through the deliberate and integrated use of engineering and earth-science technology. The development of the pressure derivative technique of well test interpretation, has greatly improve the identification of features that are often not evident on a Horner plot. This paper illustrates, with several field cases, how an adequate model of the reservoir can be diagnosed by complementing the transient response analysis, based on the pressure derivative method, with the existing geological, openhole, core analysis and performance data.