Relation Between Wells Performance and Damage Effect

Abstract

We use an alternative technique for determining the damage effect besides the traditional transient pressure tests. This alternate method uses production data of at least three measurements avoiding the necessity of long time as requires a pressure test for achieve the pseudosteady state. Another of the advantages of this technique is that, there is not fluid discharge to environment and no consumptions of human and material resources. Also it avoids extract the wells from production systems, maintaining their continuous operation. One of the main results of the proposed methodology is the reservoir characterization along its operative life, from analysis of their wells. During the process were used inflow curves, as a technical tool for determining maximum mass flow rate, reservoir pressure and its enthalpy. The application of the knowledge of these parameters besides the reservoir behavior, allows establishing the exploitation designs for each analyzed production stage. The study was carried out using data of representative wells of a Mexican geothermal field in order to characterize it and demonstrate the application of this new methodology. From the identification of the damage, the results have influence in making decisions about the workovers to apply in wells in order to improve its operation.