Study on numerical well test for discrete-fracture cavity model

Abstract

For the fractured vuggy carbonate reservoir, the existing well test models are difficult to apply because of many factors, such as the rock structure, the structural fracture and the dissolution. To solve this problem and represent the complicated flow in carbonate reservoir, we propose a finite element numerical well test model to analyze the fractured carbonate reservoirs, which are descripted from different regional reservoir flow conditions and the fluid characteristics in the numerical model. The numerical model of fractured vuggy carbonate reservoir can be used to simulate the process of pressure change, more accurate flow details of fracture cave type carbonate reservoir are described, and theoretical guidance for the development of fractured vuggy carbonate reservoirs are provided.