Physical properties of hydrate-bearing sediments
Waite, William F.
Santamarina, J. Carlos
Cortes, Douglas D.
Espinoza, D. N.
Jung, J. W.
Kneafsey, Timothy J.
Winters, William J.
MetadataShow full item record
Methane gas hydrates, crystalline inclusion compounds formed from methane and water, are found in marine continental margin and permafrost sediments worldwide. This article reviews the current understanding of phenomena involved in gas hydrate formation and the physical properties of hydrate-bearing sediments. Formation phenomena include pore-scale habit, solubility, spatial variability, and host sediment aggregate properties. Physical properties include thermal properties, permeability, electrical conductivity and permittivity, small-strain elastic P and S wave velocities, shear strength, and volume changes resulting from hydrate dissociation. The magnitudes and interdependencies of these properties are critically important for predicting and quantifying macroscale responses of hydrate-bearing sediments to changes in mechanical, thermal, or chemical boundary conditions. These predictions are vital for mitigating borehole, local, and regional slope stability hazards; optimizing recovery techniques for extracting methane from hydrate-bearing sediments or sequestering carbon dioxide in gas hydrate; and evaluating the role of gas hydrate in the global carbon cycle.
Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Reviews of Geophysics 47 (2009): RG4003, doi:10.1029/2008RG000279.
Showing items related by title, author, creator and subject.
Physical property changes in hydrate-bearing sediment due to depressurization and subsequent repressurization Waite, William F.; Kneafsey, Timothy J.; Winters, William J.; Mason, D. H. (American Geophysical Union, 2008-07-03)Physical property measurements of sediment cores containing natural gas hydrate are typically performed on material exposed, at least briefly, to non-in situ conditions during recovery. To examine the effects of a brief ...
Parametric study of the physical properties of hydrate-bearing sand, silt, and clay sediments : 1. Electromagnetic properties Lee, J. Y.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2010-11-09)The marked decrease in bulk electrical conductivity of sediments in the presence of gas hydrates has been used to interpret borehole electrical resistivity logs and, to a lesser extent, the results of controlled source ...
Parametric study of the physical properties of hydrate-bearing sand, silt, and clay sediments : 2. Small-strain mechanical properties Lee, J. Y.; Francisca, Franco M.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2010-11-09)The small-strain mechanical properties (e.g., seismic velocities) of hydrate-bearing sediments measured under laboratory conditions provide reference values for calibration of logging and seismic exploration results acquired ...