查看文章

Creating a stimulated reservoir domain (SRD) is a necessity to effectively extract natural gas from shale reservoirs. After hydraulic fracturing, a shale reservoir has three distinct domains: SRD, non-stimulated reservoir domain (NSRD) and hydraulic fractures (HFs). In previous studies, the property contrasts and interactions between different domains are often not fully considered. In this study, a fully coupled multi-domain and multi-physics model is developed to incorporate these complexities. The shale reservoir is characterized as an assembly of three distinct components: organic kerogen, inorganic matrix and HF. Furthermore, the kerogen and inorganic matrix are defined as dual-porosity-dual-permeability media, while the HF is simplified as a 1-D cracked medium. Particularly, the inorganic matrix has different properties in each of the SRD and NSRD to reflect the stimulation effect of hydraulic fracturing on the …