Architecture of gas-hydrate-bearing sands from Walker Ridge 313, Green Canyon 955, and Alaminos Canyon 21: Northern deepwater Gulf of Mexico

Boswell, Ray; Frye, Matthew; Shelander, Dianna; Shedd, William; McConnell, Daniel R.; Cook, Ann E.

doi:10.1016/j.marpetgeo.2011.08.010

Cited by 112 publications

(77 citation statements)

References 31 publications

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“…S h w 25%: . The in-place volume is approximately 16.17 BCM (571 BCF), with a corresponding resource density of 0.40 BCM/km 2 (Boswell et al, 2012b), both of which are somewhat lower than the sand units in the Terrebonne Basin but are comparable to the fractured clay-rich stratigraphic unit values in the Terrebonne Basin.…”

Section: Confirmed Gas Hydrate Reservoirs E Gommentioning

confidence: 87%

“…Two of these sites e AC21 and GC955 e were confirmed during the JIP Leg II drilling program (Boswell et al, 2012a) and are described in Boswell et al (2012b). The third site is located in Alaminos Canyon block 818 (AC818) in the western GOM.…”

Section: Confirmed Gas Hydrate Reservoirs E Gommentioning

confidence: 93%

“…4b). The Blue seismic horizon corresponds to the lower part of the Blue sand interval, which in both JIP wells comprises the coarsest lithologies and the highest gas hydrate saturation within the greater blue unit (Boswell et al, 2012b).…”

Section: Blue Horizonmentioning

confidence: 99%

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Gas hydrate resource potential in the Terrebonne Basin, Northern Gulf of Mexico

Frye¹,

Shedd²,

Boswell

2012

Marine and Petroleum Geology

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Section: Confirmed Gas Hydrate Reservoirs E Gommentioning

confidence: 87%

Section: Confirmed Gas Hydrate Reservoirs E Gommentioning

confidence: 93%

See 1 more Smart Citation

Gas hydrate resource potential in the Terrebonne Basin, Northern Gulf of Mexico

Frye¹,

Shedd²,

Boswell

2012

Marine and Petroleum Geology

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“…Estimates for economic gas-in-place present in global NGH deposits within reservoirs are in excess of ~40,000 TCF (Max & Johnson, 2016). Regionally, NGH deposits in Nankai (JOGMEC, 2013) and Blake Ridge (Dillon & Max, 2001) each contain ~40 TCF gas and ~400 BCF low-salinity water, whereas Walker Ridge houses ~750 BCF gas (Boswell et al, 2012), and thus ~10 BCF low-salinity water.…”

Section: Low Salinity Water Fluxes From Natural Gas Hydratementioning

confidence: 99%

Submarine vortices derived from natural gas hydrate conversion: a mechanism for ocean mixing

Barnard

Max

Gualdesi³

2017

Medit. Mar. Sci.

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We propose that the source water for some abyssal undular vortices cored by cool, low-salinity water identified at depths in excess of 2,500 m in the deepwater region of the Eastern Mediterranean Basin may be related to conversion of natural gas hydrate (NGH) in abyssal marine sediments. The conditions for extensive formation of NGH in the gas hydrate stability zones (GHSZ) of the upper seafloor sediments existed in this region during previous glacial episodes when colder water supported a thicker GHSZ. Seafloor warming during the most recent interglacial caused thinning of the GHSZ at its base and has driven endothermic NGH dissociation that would have released large volumes of low-salinity water and gas that would tend to pond below the base GHSZ. Periodically, trapped low-salinity water and gas would be released into the sea through the overlying sediments. Buoyant low-salinity water masses, supersaturated with gas and locally containing free gas would ascend and introduce a dynamic element into an otherwise generally static environment. As a result of the interaction of the rise of this buoyant plume and Coriolis acceleration the ascending mass would begin to rotate and form a vortex tube in midwater. NGH conversion within the seafloor introduces large coherent masses of low-salinity, lower-temperature water containing a buoyant free gas fraction from near-surface reservoirs into the abyssal depths even where there may only be a weak natural gas petroleum system.

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“…Japan obtained gas from the oceanic hydrates by depressurization in the Nankai Trough in March of 2013 [13], which was the world's first successful production of gas from hydrate reservoir at the bottom of the ocean. In the northern Gulf of Mexico, a logging-while-drilling expedition was conducted in April and May of 2009 [14]. The drilling tests showed that high S H (from 50% to 90%) hydrate samples were acquired in two wells in Walker Ridge 313 and two in Green Canyon 955.…”

Section: Oceanic Hydrates and The Hydrates In The South China Seamentioning

confidence: 99%

Evolution of Hydrate Dissociation by Warm Brine Stimulation Combined Depressurization in the South China Sea

Feng

et al. 2013

Energies

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Abstract:To evaluate the gas production performance of the hydrate accumulations in the South China Sea, a numerical simulation with warm brine stimulation combined depressurization has been conducted. A dual horizontal well system is considered as the well configuration in this work. In order to reduce energy input and improve energy utilization, warm brine (<30 °C) instead of hot brine (>50 °C) is injected into the reservoir for hydrate dissociation. The effect of the intrinsic permeability of the hydrate reservoir, the salinity and the temperature of the injected brine to gas hydrate exploitation have been investigated. The numerical simulation results indicate that the average gas production rate Q avg is about 1.23 × 10 5 ST m 3 /day for the entire hydrate deposit, which has the same order of magnitude compared with the commercially viable production rate. The injected brine can be pumped out from the upper production well directly after the hydrate between the two wells is dissociated completely. Thus, the effective region of heat and inhibitor stimulation is limited. The sensitivity analyses indicate that the dissociation rate of hydrate can be enhanced by increasing the temperature of the injected brine and raising the salinity of the injected brine. The parametric study of permeability shows that the hydrate of the reservoir with the larger permeability has a higher dissociation rate. OPEN ACCESS

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Architecture of gas-hydrate-bearing sands from Walker Ridge 313, Green Canyon 955, and Alaminos Canyon 21: Northern deepwater Gulf of Mexico

Cited by 112 publications

References 31 publications

Gas hydrate resource potential in the Terrebonne Basin, Northern Gulf of Mexico

Gas hydrate resource potential in the Terrebonne Basin, Northern Gulf of Mexico

Submarine vortices derived from natural gas hydrate conversion: a mechanism for ocean mixing

Evolution of Hydrate Dissociation by Warm Brine Stimulation Combined Depressurization in the South China Sea

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