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Finite-difference modelling of microseismicity associated with a hydraulic-fracturing stimulation in a coalbed methane reservoir
- Source: First Break, Volume 36, Issue 4, Apr 2018, p. 41 - 48
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- 01 Apr 2018
Abstract
Abstract
Owing to the large capacity for matrix storage, substantial volumes of methane gas are stored in coal beds in the form of adsorbed gas (Nuccio, 2000). According to Langmuir’s theory that relates the adsorbed gas volume to the reservoir pressure (Langmuir, 1918), a fast dewatering process is required to achieve rapid reduction of the reservoir pressure and thus to release the adsorbed methane gas (Anderson and Simpson, 2003). The effectiveness of this dewatering process depends on the coal permeability, which is mostly related to the aperture and spacing of its natural fractures (or cleats).
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