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A better understanding of seismic dispersion and attenuation of acoustic waves in rocks is important for quantitative interpretation of seismic data, as well as for relating seismic data, sonic-log data, and ultrasonic laboratory data. In the present work, a new laboratory setup is described...

Tunneling in weakness zones containing swelling clay represents one of the most difficult conditions in hard rock tunneling. Evaluation of rock support requirements in such zones is normally empirical, i.e. mainly based on experience. In this paper, rock supports in a major weakness zone containing...

We combine Full-Waveform Inversion (FWI) and rock physics inversion to provide quantitative estimates of CO₂ saturation at Sleipner. The rock physics tool is based on uniform saturation and patchy saturation rock physics models. The patchy saturation model takes into account the attenuation at the...

Earlier studies on dry, clay free sandstone have shown a linear increase in the non-elastic compliance upon unloading, apparently starting from zero at the turning point of the stress path. It is argued that the offset seen at the turning point in other rocks may be interpreted as a result of...

The poroelastic effect addresses the coupled deformations of the solid framework and the fluids in a porous rock. It also studies the effective stresses that result from this coupled behavior. Because fluids can move through the porous medium, at a rate controlled by their permeability, local...