| Título: | Analysis of Oil Production Behavior for the Fractured Basement Reservoir Using Hybrid Discrete Fractured Network Approach |
| Autores: |
Han, J. J.; Petroleum & Natural Gas Engineering Lab., Department of Natural Resources and Environmental Engineering, Hanyang University, Korea Lee, T. H.; Petroleum & Natural Gas Engineering Lab., Department of Natural Resources and Environmental Engineering, Hanyang University, Korea Sung, W. M.; Petroleum & Natural Gas Engineering Lab., Department of Natural Resources and Environmental Engineering, Hanyang University, Korea |
| Fecha: | 2013-03-31 |
| Publicador: | Advances in Petroleum Exploration and Development |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
| Tema: |
Dual-porosity; Hybrid DFN; Fractured basement reservoir; Local grid refinement |
| Descripción: | Unlike naturally fractured reservoir, fractured basement reservoir (FBR) has almost non-permeable matrix and flow is strongly dependent upon fracture network. This might cause the rapid changing behavior on oil production whether fracture near wellbore is saturated with either oil or water. In this aspect, realistic representation of fracture network is essential in FBR. Therefore the simulation of FBR is generally applied by dual-porosity (DP) continuum approach because discrete fractured network (DFN) simulator with multiphase flow is not commercially available except in-house model. In this paper, hybrid DFN approach is applied, which is continuum model coupled with local grid refinement (LGR). LGR is adapted at the cells which are passing through fractures, in order to represent fracture width less than 0.1 ft. Up to now, LGR is mostly used for well block rather than the fracture. In this approach, well control volume can not be described by LGR cell, thus, four-leg horizontal well concept substitutes the vertical well with the use of equivalent wellbore radius for overcoming the numerical convergence problem. The application of hybrid DFN approach for FBR is discussed about investigation of the possibility for drastic change on oil production. Based on the results, in fractured reservoir using hybrid DFN approach, oil production is not found to be proportional to the magnitude of matrix permeability, not as in porous system with dual-porosity approach. Also, we realized that oil production is once dropped it can not be recovered back to previous level in FBR. This is because oil-saturated fracture near well is once changed to water-saturated, then, there was not anymore changes occurred within the same fracture.Key words: Dual-porosity; Hybrid DFN; Fractured basement reservoir; Local grid refinement |
| Idioma: | Inglés |
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