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Mining Publication: Two-Phase Flow in Coalbeds

Original creation date: January 1975

Image of publication Two-Phase Flow in Coalbeds

Experimental work by the Bureau of Mines indicates that when a coalbed is degassed by boreholes, the flow of methane may actually increase with time. This phenomenon appears to be the result of a relative permeability effect; that is, the coalbed permeability to the gas increases sharply with decreasing water saturation. This report reviews the background of experimental evidence indicating a relative permeability effect and presents the results of a computer simulation of two-phase flow in coal.

Authors: FN Kissell, JC Edwards

Report of InvestigationsJanuary - 1975

  • Adobe Acrobat - Portable Document Format (.PDF)

    0.59 MB

NIOSHTIC2 Number: 10000735

Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8066, 1975 Jan; :1-16

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