Measurements of gas-liquid relative permeability of Queensland coals

Ge, Lei and Khan, Chawarwan and Rufford, Thomas E. and Rudolph, Victor (2015) Measurements of gas-liquid relative permeability of Queensland coals. In: AAPG Asia Pacific Region, Geoscience Technology Workshop (2015), 12-13 Feb 2015, Brisbane, Australia.

Abstract

The feature of water-gas two-phase flow through coal seams determines the water depletion and gas production associated in coal seam gas recovery. Therefore, coal relative permeability is crucial for studies of two-phase flow behaviour in coal, which is greatly influenced by water/gas saturation and coal ranks. In this study, a permeability model incorporated with cleat size distribution and cleat tortuosity was developed to predict the relative permeability of gas and water in coals. An unsteady-state method has been applied to investigate the relative permeability of gas and water in coal samples from Surat Basin through water replacement with gas. A series of relative permeability curves for selected coals have been obtained. The measured pore size distribution, porosity and irreducible water saturation percentage are used to correlate the permeability of gas and water with gas saturation by modelling.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Poster)
Refereed: No
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 02 Nov 2017 05:12
Last Modified: 14 Nov 2017 22:33
Uncontrolled Keywords: Permeability; coal-seam gas; water; gas; unsteady-state method
Fields of Research : 09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091406 Petroleum and Reservoir Engineering
URI: http://eprints.usq.edu.au/id/eprint/31124

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