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- Title
Introduction to Special Issue on Gas Hydrate in Porous Media: Linking Laboratory and Field‐Scale Phenomena.
- Authors
Ruppel, C. D.; Lee, J. Y.; Pecher, I.
- Abstract
The proliferation of drilling expeditions focused on characterizing natural gas hydrate as a potential energy resource has spawned widespread interest in gas hydrate reservoir properties and associated porous media phenomena. Between 2017 and 2019, a Special Section of this journal compiled contributed papers elucidating interactions between gas hydrate and sediment based on laboratory, numerical modeling, and field studies. Motivated mostly by field observations in the northern Gulf of Mexico and offshore Japan, several papers focus on the mechanisms for gas hydrate formation and accumulation, particularly with vapor phase gas, not dissolved gas, as the precursor to hydrate. These studies rely on numerical modeling or laboratory experiments using sediment packs or benchtop micromodels. A second focus of the Special Section is the role of fines in inhibiting production of gas from methane hydrate, controlling the distribution of hydrate at a pore scale, and influencing the bulk behavior of seafloor sediments. Other papers fill knowledge gaps related to the physical properties of hydrate‐bearing sediments and advance new approaches in coupled thermal‐mechanical modeling of these sediments during hydrate dissociation. Finally, one study addresses the long‐standing question about the fate of methane hydrate at the molecular level when CO2 is injected into natural reservoirs under hydrate‐forming conditions. Key Points: The arc of laboratory and modeling research focused on hydrate‐bearing sediments has been based on the findings of major field programsThe Special Section highlights hydrate formation from vapor phase methane in porous media and the role of fines in hydrate reservoirsThe Special Section underscores the importance of coupled mechanical and thermodynamic models for tracking gas hydrate reservoir evolution
- Subjects
GULF of Mexico; JAPAN; GAS hydrates; NATURAL gas geology; POROUS materials
- Publication
Journal of Geophysical Research. Solid Earth, 2019, Vol 124, Issue 8, p7525
- ISSN
2169-9313
- Publication type
Article
- DOI
10.1029/2019JB018186