The phase diagram for methane + water is explained, in relation to hydrate applications, such as in flow assurance and … in nature. For natural applications, the phase diagram determines the regions for hydrate formation for two- and three …

Hydrate formation/dissociation of natural gas in (diesel oil + water) emulsion systems containing 3 wt% anti … components also exists during the hydrate formation process. The experiments on hydrate dissociation showed that the dissociation … process of natural gas hydrate formation and dissociation in emulsion systems were also examined. …

Natural gas hydrates are increasingly viewed as a potential economic resource as energy demands rise. In this study …

sediments, thermal dissociation of gas hydrates, excess pore pressure generation, pressure diffusion, and hydrate dissociation …, by gas hydrate dissociation. It has been reported that during the past 55 years (1955–2010) the 0–2000 m layer of oceans … bottom water of deep oceans continues, it would dissociate natural gas hydrates and could eventually trigger massive slope …

hydrate formation and dissociation by a thermal method using a 5L volume reactor. This study simulated porous media by using … and there are three stages in the dissociation period which is influenced by the rate of hydrate dissociation and the heat … of hydrate dissociation. Especially, the period of Δ<em>T_oi</em> with production temperature of 10 °C is twice …

indicating rapid transitions between the presence of methane hydrates and vertical gas flux. Vertical profiles of dissolved … sulfate, chloride, calcium, magnesium, and dissolved inorganic carbon (DIC) concentrations in porewaters, headspace methane …, and solid phase carbonate concentrations were measured at each core location to investigate the cycling of methane …

Coastal methane hydrate deposits are globally abundant. There is a need to understand the deep sediment sourced methane … identified in geophysical surveys as an elevated bottom seismic reflection. Geochemical data revealed off-mound methane diffusion … and active fluid advection on-mound. Gas composition (average methane/ethane ratio ~11,000) and isotope ratios of methane …

Response surface methodology with a central composite design was applied to optimize the key factors affecting methane … that substrate concentration and initial pH had significant individual (<i>p</i> < 0.05) effect on methane yield (<i …

Moderate elevated vertical methane (CH₄) flux is associated with sediment accretion and raised fluid … water and sediment were variable across the ridge suggesting close proximity of heterogeneous carbon sources. Methane stable … sources across the ridge and show a low methane contribution to organic carbon. …

gas mobilization as equally important process parameter in addition to the rates of methane hydrate dissociation and … dissociation of CH₄-hydrate while the CO₂, once thermally equilibrated, reacts with the pore water and is … hydrates can form. At 2 °C, the production process was less effective due to congestion of transport pathways through the …