Results 21 to 30 of about 10,780 (258)

Effect of Pressure on Hydrogen Isotope Fractionation in Methane during Methane Hydrate Formation at Temperatures Below the Freezing Point of Water

open access: yesMethane, 2023
Isotopic fractionation of methane between gas and solid hydrate phases provides data regarding hydrate-forming environments, but the effect of pressure on isotopic fractionation is not well understood.
Akihiro Hachikubo   +3 more
doaj   +1 more source

Mechanical creep instability of nanocrystalline methane hydrates [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2021
Fundamental creep mechanisms of nanocrystalline methane hydrates are revealed, which are of importance to evaluate the mechanical stability of gas hydrate-bearing sediments in both terrestrial and planetological environments.
Pinqiang Cao   +3 more
openaire   +3 more sources

Strengthening mechanism of cemented hydrate‐bearing sand at microscales

open access: yesGeophysical Research Letters, 2016
On the basis of hypothetical particle‐level mechanisms, several constitutive models of hydrate‐bearing sediments have been proposed previously for gas production.
Jun Yoneda   +3 more
doaj   +1 more source

A review on the methane emission detection during offshore natural gas hydrate production

open access: yesFrontiers in Energy Research, 2023
Due to the high energy density, large potential reserves and only release CO2 and water after combustion, natural gas hydrate (NGH) is considered as the most likely new clean energy source to replace traditional fossil energy (crude oil, natural gas, etc.
Shuangxing Liu   +4 more
doaj   +1 more source

Escape of methane gas from the seabed along the West Spitsbergen continental margin [PDF]

open access: yes, 2009
More than 250 plumes of gas bubbles have been discovered emanating from the seabed of the West Spitsbergen continental margin, in a depth range of 150-400 m, at and above the present upper limit of the gas hydrate stability zone (GHSZ).
Nisbet, Euan G.   +66 more
core   +1 more source

Research Progress on the Effect of Salts on the Stability of Methane Hydrate

open access: yesYankuang ceshi, 2018
The thickness of the methane hydrate stable zone is mainly controlled by the stability of methane hydrate. The temperature, pressure, pore water salinity, and gas component affect the thickness of the hydrate stable zone. The formation of methane hydrate
LIU Wei-yi   +3 more
doaj   +1 more source

Gas hydrate growth and dissociation in narrow pore networks: capillary inhibition and hysteresis phenomena [PDF]

open access: yes, 2009
Marine sediments hosting gas hydrates are commonly fine-grained (silts, muds, clays) with very narrow mean pore diameters (0.1 mm). This has led to speculation that capillary phenomena could play an important role in controlling hydrate distribution in
Webber, J. Beau W.   +5 more
core   +1 more source

Effect of Lithological Parameters on Combustion Characteristics of Methane Hydrate Sediments

open access: yesFire, 2023
In this paper, four lithological parameters, that is, thermal conductivity, particle size, porosity, and saturation, are investigated by combining experimental observations with numerical simulations to study the influence laws and mechanisms of action ...
Gan Cui   +7 more
doaj   +1 more source

Mechanical Performance of Methane Hydrate–Coal Mixture

open access: yesEnergies, 2018
Understanding mechanical behaviors of a methane hydrate–coal mixture are important for its associated application in coal and gas outburst prevention.
Xia Gao   +5 more
doaj   +1 more source

Estimation of gas hydrate concentration from multi-component seismic data at sites on the continental margins of NW Svalbard and the Storegga region of Norway [PDF]

open access: yes, 2008
High-resolution seismic experiments, employing arrays of closely spaced, four-component ocean-bottom seismic recorders, were conducted at a site off western Svalbard and a site on the northern margin of the Storegga slide, off Norway to investigate how ...
Mienert, J.   +48 more
core   +1 more source

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