Pressure and rate distribute performance of multiple fractured well with multi-wing fracture in low-permeability gas reservoirs

Abstract

In this work, a new mathematical model of fractured well considering multiple factors (Permeability stress sensitivity, multiple wells interference and multiple fractures interference) is established to simulate wellbore pressure performance and rate distribution in tight gas reservoirs. The new fracture discrete coupling mathematical model is established. The wellbore pressure solution can be obtained by the pressure drop superposition and Stehfest numerical inversion. Seven flow stages are observed according to the characteristics of pressure derivative curve. The influence of several significant parameters, including rate ratio, fracture half-length, and well spacing and stress sensitivity are discussed. Based on the developed model, we demonstrated a field case to verify model accuracy. This work provides new supplementary knowledge to improve pressure data interpretation for multi-well group in tight gas reservoirs.