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Simulation Analysis of Oil Recovery by Imbibition and Gravity Drainage in a Single-Block with Surrounding Fracture
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 84th EAGE Annual Conference & Exhibition, Jun 2023, Volume 2023, p.1 - 5
Abstract
Summary
More than half of the reservoirs in the world are carbonate reservoirs, most of which are fractured. Fractured reservoir systems can be divided into matrix and fracture media. The matrix contains the bulk of the oil in the reservoir, but its fluid flow is slow and complex. The fracture contains much less volume of oil and controls the fluid flow in the reservoir. The Fracture network has a noticeable effect on the production mechanism. Depending on the rock permeability and wettability, fracture length, and the reservoir fluids’ properties, the dominant mechanisms are changed in fractured reservoirs. Generally, the carbonate reservoir’s wettability is mixed wet; therefore, it is necessary to know the dominant mechanisms, especially gravity drainage and forced and spontaneous imbibition, to build an accurate simulation model of fractured reservoirs.
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