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Simulation of Coalbed Methane Flows, Hydro-Mechanical Modelling in a Particular Fractured Reservoir
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
Coalbed methane is a valuable energy resource. Coal is a naturally fractured reservoir and fractures are generally water saturated with the hydrostatic pressure maintaining the gas adsorbed in the coal matrix. Production of coalbed methane (CBM) first requires the mobilization of water to reduce the reservoir pressure. The typical production curve is therefore distinct from a conventional reservoir. This work consists in the formulation and the use of a numerical model able to reproduce this typical curve. The proposed model is fully coupled to capture changes of the coal properties during production. It is a critical issue in coalbed methane recovery since any change of the fracture network will likely translate into modifications of the reservoir permeability.