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Permeability testing of coal under different triaxial conditions

Conference Paper


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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. The study was conducted using two different types of permeability apparatus. The methods of permeability testing of coal under different triaxial conditions are discussed. Permeability testing of the Bulli seam coal sample with N-2 is described as an example in this study. Both the tests results and the values of calculated permeability were in agreement.

UOW Authors


  •   Zhang, Lei (external author)
  •   Aziz, Naj I.
  •   Ren, Ting
  •   Nemcik, Jan (external author)
  •   Wang, Zhongwei (external author)

Publication Date


  • 2012

Citation


  • Zhang, L., Aziz, N., Ren, T., Nemcik, J. & Wang, Z. (2012). Permeability testing of coal under different triaxial conditions. In N. Aziz, B. kininmonth, J. Anton. Nemcik & T. X. Ren (Eds.), 12th Coal Operators Conference (pp. 278-286). Wollongong, Nsw 2500, Australia: University of Wollongong.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2077&context=coal

Ro Metadata Url


  • http://ro.uow.edu.au/coal/416

Start Page


  • 278

End Page


  • 286

Place Of Publication


  • Wollongong, Nsw 2500, Australia

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. The study was conducted using two different types of permeability apparatus. The methods of permeability testing of coal under different triaxial conditions are discussed. Permeability testing of the Bulli seam coal sample with N-2 is described as an example in this study. Both the tests results and the values of calculated permeability were in agreement.

UOW Authors


  •   Zhang, Lei (external author)
  •   Aziz, Naj I.
  •   Ren, Ting
  •   Nemcik, Jan (external author)
  •   Wang, Zhongwei (external author)

Publication Date


  • 2012

Citation


  • Zhang, L., Aziz, N., Ren, T., Nemcik, J. & Wang, Z. (2012). Permeability testing of coal under different triaxial conditions. In N. Aziz, B. kininmonth, J. Anton. Nemcik & T. X. Ren (Eds.), 12th Coal Operators Conference (pp. 278-286). Wollongong, Nsw 2500, Australia: University of Wollongong.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2077&context=coal

Ro Metadata Url


  • http://ro.uow.edu.au/coal/416

Start Page


  • 278

End Page


  • 286

Place Of Publication


  • Wollongong, Nsw 2500, Australia