DefinePK

Abstract

Pressure tests in infinite-conductivity hydraulically-fractured vertical wells allow for the estimation of the actual half-fracture length. If only elliptical flow is observed then the knowledge of the drainage area is required for the analysis which could lead to have a longer test for observing late psudosteady-state regime. Sometimes, it is unpractical to do so, then a new elliptical model excluding the reservoir area for the half-fracture length estimation is presented in this work for both homogeneous and naturally-fractured occurding hydrocarbon formations. TDS technique and conventional analysis were implemented for characterizing this flow regime. The resulting equations were successfully tested with synthetic pressure tests.