Abstract
The prediction of water breakthrough and oil recovery for naturally fractured reservoirs (NFRs) cannot be performed accurately without dynamic upscaled relative permeability functions. Relative permeability is commonly assumed to be a scalar quantity, although a justification for NFRs has yet to be presented. In this study, we show how accurate this assumption is for fracture-matrix ensemble relative permeabilities determined by numeric simulations of unsteady-state core flooding.
Numerical determination of relative permeability requires a realistic flow model, a spatially adaptive simulation approach and a sophisticated analysis procedure. To fulfil these requirements, we apply discrete fracture and matrix (DFM) modelling to well characterized hm-km outcrop analogues. These are parametrized with aperture, permeability, and capillary pressure data. Fracture attributes are allowed to vary from segment to segment, trying to emulate in situ conditions.
Numerical determination of relative permeability requires a realistic flow model, a spatially adaptive simulation approach and a sophisticated analysis procedure. To fulfil these requirements, we apply discrete fracture and matrix (DFM) modelling to well characterized hm-km outcrop analogues. These are parametrized with aperture, permeability, and capillary pressure data. Fracture attributes are allowed to vary from segment to segment, trying to emulate in situ conditions.
Original language | English |
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Publication status | Published - 5 Feb 2018 |
Event | Third EAGE Workshop on Naturally Fractured Reservoirs - Muscat, Oman, Muscat, Oman Duration: 5 Feb 2018 → 7 Feb 2018 https://events.eage.org/en/2018/third-eage-workshop-on-naturally-fractured-reservoirs |
Workshop
Workshop | Third EAGE Workshop on Naturally Fractured Reservoirs |
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Country/Territory | Oman |
City | Muscat |
Period | 5/02/18 → 7/02/18 |
Internet address |