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Permeability and volumetric changes in coal under different test environment

Journal Article


Abstract


  • Permeability refers to the ability of coal to transmit gas when a pressure or concentration gradient exists across it. The permeability of coal is dependent upon factors that include effective stress, gas pressure, water content, disturbance associated with drilling and matrix swelling/shrinkage due to adsorption/desorption. A programme of laboratory tests were conducted on coal samples from the Bulli seam for evaluating the permeability and drainability of coal. Two different types of permeability apparatus were used in this study. The methods of permeability testing of coal under different triaxial conditions are discussed. Permeability testing of the Bulli seam coal with N2 is described. The laboratory test results were found to be in agreement with the calculated permeability values.

UOW Authors


Publication Date


  • 2013

Citation


  • Aziz, N., Ren, T., Nemcik, J. & Zhang, L. (2013). Permeability and volumetric changes in coal under different test environment. Acta Geodynamica et Geomaterialia, 10 (2), 163-171.

Scopus Eid


  • 2-s2.0-84879322044

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1572

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 163

End Page


  • 171

Volume


  • 10

Issue


  • 2

Place Of Publication


  • Czech Republic

Abstract


  • Permeability refers to the ability of coal to transmit gas when a pressure or concentration gradient exists across it. The permeability of coal is dependent upon factors that include effective stress, gas pressure, water content, disturbance associated with drilling and matrix swelling/shrinkage due to adsorption/desorption. A programme of laboratory tests were conducted on coal samples from the Bulli seam for evaluating the permeability and drainability of coal. Two different types of permeability apparatus were used in this study. The methods of permeability testing of coal under different triaxial conditions are discussed. Permeability testing of the Bulli seam coal with N2 is described. The laboratory test results were found to be in agreement with the calculated permeability values.

UOW Authors


Publication Date


  • 2013

Citation


  • Aziz, N., Ren, T., Nemcik, J. & Zhang, L. (2013). Permeability and volumetric changes in coal under different test environment. Acta Geodynamica et Geomaterialia, 10 (2), 163-171.

Scopus Eid


  • 2-s2.0-84879322044

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1572

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 163

End Page


  • 171

Volume


  • 10

Issue


  • 2

Place Of Publication


  • Czech Republic