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Keywords: cleat
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Proceedings Papers

Paper presented at the Annual Technical Meeting, June 9–12, 1990
Paper Number: PETSOC-90-119
.... This is because the primary means of gas storage in coal beds is byadsorption of methane molecules on coal surfaces. When a coal bed is subjected to pressure drawdown, the desorbed gas must move by diffusion through the extremely low permeability coal matrix in order to reach the natural fracture (cleat) system...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 9–12, 1990
Paper Number: PETSOC-90-118
... Abstract The recovery of gas from coal beds is a two-step process. First, the gas diffuses through the matrix then, secondly, it flows through the cleats to the wellbore. If the release of gas from the matrix to the cleats is very rapid compared to the flow of gas and water in the cleats...

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