Assessing the Influence of Fracture Networks on Gas-Based Enhanced Oil Recovery Methods

Numerous reservoirs that play a significant role in worldwide petroleum production and reserves contain fractures. Typically, the fractures must form connected network for reservoir to be classified as naturally fractured. Characterizing with focus on its fracture is crucial modeling predicting performance. To simplify solution, dual-continuum techniques are commonly employed. However, use continuum-scale approaches, properties such average aperture, permeability, matrix interaction parameters assigned, making it necessary improve depiction methods. This study investigated fractured low permeability well-connected network. The was impact of hierarchical performance gas-based enhanced oil recovery discrete (DFN) model utilized create comprehensive two-dimensional models three processes: gas injection (GI), water alternating (WAG), foam-assisted (FAWAG). Moreover, dimensionless numbers were employed establish connections between across entire hierarchy, spanning from minor major encompassing intensity. results indicate FAWAG process more sensitive types networks than WAG GI processes. Hence, sensitivity individual EOR method requires respective depth description other factors, fluid properties, might influence when excluded. determined among (EOR) examined, significance diminished ratio (primary fracture) aperture medium increased. Additionally, assisted-gravity drainage greater increased height; however, intensity increased, relative importance decreased.