The Use of Inflow Performance Relationships to Identify Reservoir Response During Production Tests in a Geothermal Well

Abstract

The behavior of four inflow performance relationships are analyzed and discussed. Two of them are developed for petroleum systems and two others are developed for geothermal fluid containing high and low salinity respectively. A methodology to determine the maximum flow rate (Wmax) that a well can produce for a specific stage of its productive life, using these inflow relationships is presented. Also it is showed the way to identify the intervals of the dimensionless pressure values (pD), for which the maximum flow rate can be considered as stable and as a reservoir response according to its bottom flowing pressure (pwf). Application of this methodology to four cases of production test in wells was carried out, founding that the intervals of pD values where the stabilized flow is identified is a function of the magnitude of the well flow capacity.