Fracture Network Numerical Well Test Model Based on the Discrete-fracture Model

• DOI: 10.1016/j.proeng.2015.11.293
• Publication Date: 2015-12-01T16:10:12Z
• Authors: Yizhao Wan; Yuewu Liu; Weiping Ouyang; Congcong Niu; Guofeng Han; Wenhao Liu
• Keywords: 0211 other engineering and technologies; 02 engineering and technology; Engineering(all)

Based on the characteristics of fractures in naturally fractured reservoir and discrete-fracture model, a fracture network numerical well test model was developed, which incorporated explicitly spatial domain. In two-dimensional problems, were represented as one-dimensional line element matrix space discretized into linear triangular elements. Bottom hole pressure response curves field obtained by solving equations with finite-element method. Through analyses bottom fluid flow field, seven stages can be recognized curves, i.e. wellbore storage, transition, flow, to system radial boundary-dominated flow. Effects reservoirs parameters, such conductivity, permeability, density permeability anisotropy studied. The analysis results demonstrated that conductivity played leading role Matrix influenced beginning time from fractures. Fractures another important parameter controlling covered under large density. propagation slower direction larger same situation happened cases.