Modelling the transient effect in naturally fractured reservoirs

Abstract Modelling of Naturally Fractured Reservoirs (NFR’s) is a very challenging task. NFR’s are often simulated using the dual-porosity (DP) model, which requires significantly lower computational time and less simulation cost compared with fine-grid modelling. However, DP model unable to capture transient effect, saturation front, its tendency overestimate predicted oil recovery, as invaded fluid immediately reaching gridblock centre once exceeds critical saturation. The matrix block discretisation modifying transfer function among widely investigated areas represent effect improve accuracy. Adjusting results in complicated unstable solutions, make this approach limited use. technique, such Multiple Interacting Continua (MINC), one utilised approaches NFR’s. model’s layers provide required mean include heterogeneities. In work, we present an improvement original MINC enhance accuracy stability particular case two subdomains model. We suggested equal volume sub-blocks, besides performing adjustment calculation new adjustments have provided stable solution improved Besides advantage handle various heterogeneities excellent marginal errors, hence reliable performance prediction.