000			01938nab a2200193 4500
005			20260520002021.0
008			260224s2011 xxu
100	1		_aTonnsen, Robert R. _951485
100	1		_aMiskimins, Jennifer _951486
245	0	0	_aSimulation of deep-coalbed-methane permeability and production assuming variable pore-volume compressibility
260			_cmay. 2011
270			_a07/09/2011 ; 07/09/2011
300			_a9 p. ; 23-31
520			_aTranscripción del resumen del autor. One of the horizons of interest for future unconventional-resource development is deep- (> 5,000 ft) coalbed-methane (CBM) production. Unfortunately, coal permeability is highly sensitive to changes in stress, leading to the belief of limited permeability in deep coals. However, this conclusion is generally based on the assumption of constant pore-volume (PV) compressibility of a coal's porosity/cleat system during changing stress conditions. Modelling the evolution of permeability within potential deep coal reservoirs is highly dependent on this assumption of constant or variable PV compressibility. This paper shows how this assumption affects modelled permeability changes and that permeability in deep coals may maintain much higher values during production than previously suggested. Using prior work and data, ideas are reorganized into an alternative view of deep-CBM permeability. The modelled compressibility and permeability results are then applied to the simulation of deep-CBM reservoirs to discover the practical difference of the compressibility assumption on a coal's simulated production. Simulations show significant difference in production based on the two assumptions. Application of the simulation results may provide a justification for exploration into deeper CBM reservoirs.
581			_a5
773	0		_tJournal of Canadian Petroleum Technology _g50
942			_cARTICULO
999			_c185448 _d185448