Thermal and visual time-series at a seafloor gas hydrate deposit on the Gulf of Mexico slope

MacDonald, Ian R.; Bender, Leslie; Vardaro, Michael; Bernard, Bernie B.; Brooks, James M.

doi:10.1016/j.epsl.2005.02.002

Cited by 54 publications

(30 citation statements)

References 34 publications

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“…Short-term changes in bottom water temperature and pressure due to tides, currents, or deep eddies can also affect gas hydrate deposits (e.g., Ruppel, 2000;MacDonald et al, 1994MacDonald et al, , 2005.…”

Section: Nature Of Gas Hydrate Depositsmentioning

confidence: 99%

“…Similarly, an increase in the temperature will thin the gas hydrate stability zone, although such temperature changes require thousands of years to propagate into sediments. Shortterm changes in bottom water temperature and pressure can also affect gas hydrate deposits (Ruppel, 2000;MacDonald et al, 2005). China's marine geological science and technology personnel first drilled high-purity gas hydrate samples in the eastern waters of the Pearl River Estuary in Guangdong Province and obtained considerable control reserves through drilling.…”

Section: Nature Of Gas Hydrate Depositsmentioning

confidence: 99%

See 1 more Smart Citation

Review of exploration and production technology of natural gas hydrate

Cui

Lü

et al. 2018

Adv. Geo-Energy Res.

108

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Abstract:Natural gas hydrate is an ice-like substance which is sometimes called "combustible ice" since it can literally be lighted on fire and burned as fuel. Natural gas hydrate is characterized by widespread distribution, large reserves and little pollution. This paper introduced the distributions of hydrate, hydrate reserves and properties of hydrate. The main exploration methods, such as geophysical exploration and geochemical exploration have been presented. In addition, the main production techniques of natural gas hydrate including depressurization, thermal stimulation and chemical injection have been summed up. Finally, the challenges and outlooks of natural gas hydrate production have been proposed.

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Section: Nature Of Gas Hydrate Depositsmentioning

confidence: 99%

Section: Nature Of Gas Hydrate Depositsmentioning

confidence: 99%

Review of exploration and production technology of natural gas hydrate

Cui

Lü

et al. 2018

Adv. Geo-Energy Res.

108

View full text Add to dashboard Cite

show abstract

Section: Gas Hydr Ates In Marine Sedimentsmentioning

confidence: 99%

Gas Hydrates in Marine Sediments: Lessons from Scientific Ocean Drilling

Tréhu¹,

Ruppel²,

Holland³

et al. 2006

Oceanog.

123

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“…In recent years, much attention has been paid to the long-term in-situ and on-line observations of the methane flux and the spatio-temporal variability at various hydrocarbon seep locations, e.g., Bush Hill of Mexico, Coal Oil Point seep field of the Santa Barbara channel, Hydrate Ridge, the Black Sea and Hikurangi Margin of New Zealand (Roberts et al 1999;Brown 2001, 2004;Boles et al 2001;Torres et al 2002;Tryon et al 2002;Leifer and Boles 2005a, b;MacDonald et al 2005;Vardaro et al 2006;Solomon et al 2008;Sahling et al 2009;Krabbenhoeft et al 2010;Leifer et al 2010;Linke et al 2010;Römer et al 2012a, b;Etiope et al 2013). The preliminary results indicate that the flux and material associated with hydrocarbon seeps are both spatial and temporal in nature Tryon and Brown 2004;Leifer and Boles 2005b;Solomon et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Temporal Variation in Natural Gas Seep Rate and Influence Factors in the Lingtou Promontory Seep Field of the Northern South China Sea

Di¹,

Dong²,

Chen

2014

Terr. Atmos. Ocean. Sci.

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Natural hydrocarbon seeps in marine environment are important sources of methane and other greenhouse gases into the ocean and the atmosphere. This greenhouse gas seepage influences the global methane budget and global climate change. Hydrocarbon seeps on the shallow seabed produce a near-shore gas bubble zone along the western coast of Hainan Island, in the northern South China Sea. However, few studies on the quantitative value of the methane flux and on temporal variation and influence factors of hydrocarbon seeps have been conducted until now. This study describes the results of continuous gas vent measurements for 420 hours on the seabed of the Lingtou promontory shore. The amount of gas released from a single gas vent was 30.5 m 3 during the measurement period. The gas flow rate ranged from 22 -72 L h -1 , with an average rate of 53.4 L h -1 . The time series analyses of the 420-hour record clearly show three principal tidal components with periods of 5.4, 4.6, and 2.4 hours, which are the main factors controlling the gas flow rate. Low flow rates were associated with high tide and high flow rates associated with low tide. A 1-m increase in seawater height results in a decrease of 20 -30 L h -1 or 35 -56% of the hourly flow rate. Therefore, the changes in gas volume escape from the pore could be attributed to the hydrostatic pressure effect induced by water depth. This dominant mechanism controlled pore activation as well as the gas flow rate, suggesting that in the marine environment, especially the shallow-water shelf area, sea level changes may result in great variations in methane release into the ocean and atmosphere.

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Thermal and visual time-series at a seafloor gas hydrate deposit on the Gulf of Mexico slope

Cited by 54 publications

References 34 publications

Review of exploration and production technology of natural gas hydrate

Review of exploration and production technology of natural gas hydrate

Gas Hydrates in Marine Sediments: Lessons from Scientific Ocean Drilling

Temporal Variation in Natural Gas Seep Rate and Influence Factors in the Lingtou Promontory Seep Field of the Northern South China Sea

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