Reservoir Testing Analysis in the Presence of Water Drive by Surge Technique

Abstract

In this work a testing technique based on analysis of the pressure transient created by formation surging is presented. The application of the technique is focused to cases where the tested well has high water cut besides strong bottom hole water drive and partial penetration. The analysis of the flow regimes shown under these conditions is presented. Several field cases are shown in order to see the application of this technique. A major result derived from this study is that the technique can be succesfully used in cases where by conventional pressure transient analysis no resevoir parameters can be obtained mainly because no radial flow is shown due to constant pressure effects. Linear, Radial, Bilinear and Spherical flow can be identified. Therefore making possible the calculation of transmissibily and skin effects.