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Permeability and volumetric changes in coal under different test environment

Conference Paper


Abstract


  • Permeability refers to the ability of coal to transmit gas when a pressure or concentration gradient exists

    across it. Permeability is considered by many researchers to have a significant impact on a coal seam’s ability

    to produce gas). Permeability is closely related to the coal fabric (i.e. cleat spacing and aperture width) and varies

    significantly as fluid pressure changes during coal seam gas production. Permeability has a strong effect on

    the gas production profile and gas well performance and is dependent upon various factors, which include

    effective stress, gas pressure, water content, disturbance associated with drilling and matrix swelling/shrinkage

    due to adsorption/desorption.

UOW Authors


Publication Date


  • 2012

Citation


  • Aziz, N., Ren, T., Nemcik, J. & Zhang, L. (2012). Permeability and volumetric changes in coal under different test environment. Colloquium on Geomechanics and Geophysics (pp. 45-47). Czech Republic: Academy of Sciences of the Czech Republic.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3007

Start Page


  • 45

End Page


  • 47

Abstract


  • Permeability refers to the ability of coal to transmit gas when a pressure or concentration gradient exists

    across it. Permeability is considered by many researchers to have a significant impact on a coal seam’s ability

    to produce gas). Permeability is closely related to the coal fabric (i.e. cleat spacing and aperture width) and varies

    significantly as fluid pressure changes during coal seam gas production. Permeability has a strong effect on

    the gas production profile and gas well performance and is dependent upon various factors, which include

    effective stress, gas pressure, water content, disturbance associated with drilling and matrix swelling/shrinkage

    due to adsorption/desorption.

UOW Authors


Publication Date


  • 2012

Citation


  • Aziz, N., Ren, T., Nemcik, J. & Zhang, L. (2012). Permeability and volumetric changes in coal under different test environment. Colloquium on Geomechanics and Geophysics (pp. 45-47). Czech Republic: Academy of Sciences of the Czech Republic.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3007

Start Page


  • 45

End Page


  • 47