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Derek Elsworth
Researcher at Pennsylvania State University
Publications - 567
Citations - 20255
Derek Elsworth is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Permeability (earth sciences) & Coal. The author has an hindex of 68, co-authored 520 publications receiving 15714 citations. Previous affiliations of Derek Elsworth include Baker Hughes & National Institute of Geophysics and Volcanology.
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Seismicity triggered by fluid injection–induced aseismic slip
Yves Guglielmi,Frédéric Cappa,Frédéric Cappa,Jean Philippe Avouac,Pierre Henry,Derek Elsworth +5 more
TL;DR: Real-time observations of a reactivated fault provide an option for monitoring of earthquake-inducing wastewater injection and can inform models of how friction is related to slip rate, as well as measure fault slip and seismicity induced by fluid injection into a natural fault.
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How sorption-induced matrix deformation affects gas flow in coal seams: A new FE model
TL;DR: In this paper, a cubic relation between coal porosity and permeability is introduced to relate the coal storage capability (changing porosity) to the coal transport property (changing permeability).
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Interactions of multiple processes during CBM extraction: A critical review
TL;DR: In this article, a broad variety of models have been proposed to represent the effects of sorption, swelling and effective stresses on the dynamic evolution of coal permeability, and the performance of these models is evaluated against analytical solutions for the two extreme cases of either free shrinking/swelling or constant volume.
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Changes in permeability caused by transient stresses: Field observations, experiments, and mechanisms
Michael Manga,Igor A. Beresnev,Emily E. Brodsky,Jean E. Elkhoury,Derek Elsworth,Steve Ingebritsen,David C. Mays,Chi-Yuen Wang +7 more
TL;DR: Manga et al. as discussed by the authors studied the changes in permeability caused by transient stresses in the Earth's crust and proposed several mechanisms to change the permeability of geologic media, such as unblocking colloidal deposits or mobilizing droplets and bubbles trapped in pores.
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Permeability evolution in fractured coal: The roles of fracture geometry and water-content
TL;DR: In this paper, the authors investigate the evolution of coal permeability with respect to applied stress and pore pressure at room temperature, and find that the initial permeabilities to all gases are nearly two orders of magnitude lower than for dry coal and permeabilities increase with increasing pore pressures.