Abstract: The compressive strength as a function of confining pressure and sample orientation was determined for three anisotropic sedimentary rocks (slate and two types of shales). The samples were tested ...

Abstract: The mechanical properties of intact shale samples and reservoir sandstone cored from a Gulf Coast geopressured-geothermal well have been measured in triaxial compaction tests at similar confining ...

Abstract: Constitutive relations for the compaction behavior of porous sandstone have been formulated to describe the results of uniaxial and triaxial tests under reservoir pressure and temperature conditions. ...

Abstract: A method for determining the material properties of a fluid-saturated rock via the measured wave motions is presented in this paper. The essence of the method is to compare the dispersive ...

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 ...