Pressure Transient Analysis and Flux Distribution for Multistage Fractured Horizontal Wells in Triple-Porosity Reservoir Media with Consideration of Stress-Sensitivity Effect

摘要: Triple-porosity model is usually adopted to describe reservoirs with multiscaled pore spaces, including matrix pores, natural fractures, and vugs. Multiple fractures created by hydraulic fracturing can effectively improve the connectivity between existing thus increase well deliverability. However, little work has been done on pressure transient behavior of multistage fractured horizontal wells in triple-porosity reservoirs. Based source/sink function method, this paper presents a investigate dynamics flux distribution for fractured-vuggy consideration stress-dependent fracture permeability. The semianalytically solved discretizing Pedrosa’s transformation, perturbation theory, integration transformation method. Type curves are generated, among constant production rate also discussed. Parametric study shows that major influential parameters responses pertinent reservoir properties, interporosity mass transfer, fractures. Analysis indicates density gradually increases from wellbore tips, contribution outermost higher than inner be extended optimize parameters.