Abstract: The mass balance equations for a two-phase two-component fluid system are written for viscoelastic porous media. The resulting equations are approximated by finite differences and the resulting ...

Abstract: In-situ gasification can be competitive with shaft mining for the exploitation of coal at depths too deep for surface mining. The lignite deposits in Texas may be well suited to this process ...

Abstract: Tests have been carried out to quantify the variation in permeability of Texas lignite with drying and with applied stress. It has been shown that the matrix permeability of lignite may be ...