DefinePK

Abstract

An appropriate characterization of a two-layer interconnected system is of vital importance for reservoir appraisal and administration. In this work, the TDS Technique is used for the interpretation of transient pressure test of a two-layer system separated by a low-permeable stratum so its specific permeability and the permeability of the adjacent layer can be estimated. The new developed expressions were applied to one synthetic example when the flow capacity of layer 1 is higher than layer 2. Another simulated example was devoted to the inverted flow capacity case. The average absolute deviation errors for specific permeability is lower than 1.2 % and for layer 2 permeability is lower than 0.1 % demonstrating the accuracy and convenience of the methodology.