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CHEN Duo-fu, FENG Dong, CHEN Guang-qian, CHEN Xian-pei, Lawrence M Cathles. Evolution of Marine Gas Venting System and Impact on Gas Hydrate Crystallization[J]. Acta Sedimentologica Sinica, 2005, 23(2): 323-328.
Citation: CHEN Duo-fu, FENG Dong, CHEN Guang-qian, CHEN Xian-pei, Lawrence M Cathles. Evolution of Marine Gas Venting System and Impact on Gas Hydrate Crystallization[J]. Acta Sedimentologica Sinica, 2005, 23(2): 323-328.

Evolution of Marine Gas Venting System and Impact on Gas Hydrate Crystallization

  • Received Date: 2004-05-05
  • Rev Recd Date: 2004-12-19
  • Publish Date: 2005-06-10
  • Based on the kinetic model of hydrate crystallization from venting gas in gas vent system, the evolvement characteristics and the impacts on gas hydrate crystallization in the Bush Hill gas vent system in GC 185 of Gulf of Mexico were studied. The venting rates are fast ( gas flux q > 18.4 kg/m2-a) in the earlier stage of the gas vent system, mud volcano occurred on the seafloor, the vent gas has almost the same composition as the source gas, and the heaviest possible hydrates are crystallized near the surface. The venting rates are slow ( gas flux q < 0. 55 kg/m2-a)in the later stage, hydrate crystallization will not reach the sea floor, seep carbonate will be occurred on the seafloor.Between these extremes gas hydrate and seep community is developed on the seafloor of the gas vent system, and the vent and hydrate gas compositions, and the mass fraction of venting gas crystallized hydrate depend strongly on venting rate. Changes in vent and hydrate gas chemistry observed atmultip le submersible visits to the Bush Hill vent system suggest the variations of venting rates between different submersible visiting time and different locations over the last 10 years
  • [1] 1 Aharon P. Geology and biology of modern and ancient submarine hydrocarbon seeps and vents:An introduction[J].Geo-Marine Letters,1994.69-73.

    2 Dimitrov L I. Mud volcanoes-the most important pathway for degassing deeply buried sediments[J].Earth-Science Reviews,2002,(1-4):49-76.

    3 Milkov A V,Sassen R,Apanasovich T V,Dadashev F G. Global gas flux from mud volcanoes: a significant source of fossil methane in the atmosphere and the ocean[J].Geophysical Research Letters,2003.10.

    4 Kopf A J. Global methane emission through mud volcanoes and its past and present impact on the Earth' s climate. Int[J].Journal of Earth Sciences(Geol Rundsch),2003.806-816.

    5 Judd A G,HovlM,Dimitrov L I. The geological methane budget at continental margins and its influence on climate change[J].Geofluids,2002,(02):109-126.

    6 Mazurenko L L,Soloviev V A. Worldwide distribution of deep-water fluid venting and potential occurrences of gas hydrate accumulations[J].Geo-Marine Letters,2003.162-176.

    7 Milkov A V. Worldwide distribution of submarine mud volcanoes and associated gas hydrates[J].Marine Geology,2000.29-42.

    8 李莉,陈多福,Cathles L M. 海底天然气渗漏形成水合物的线性动力学模型[J].地球化学,2002,(04):395-401.

    9 陈多福,陈先沛,陈光谦. 冷泉流体沉积碳酸盐岩的地质地球化学特征[J].沉积学报,2002,(01):35-40.

    10 Brooks J M,Cox H B,Bryant W R. Association of gas hydrates and oil seepage in the Gulf of Mexico[J].Organic Geochemistry,1986.221-234.

    11 Brooks J M,Kennicutt Ⅱ M C,Fay R R. Thermogenic gas hydrates in the Gulf of Mexico[J].Science,1984.409-411.

    12 Kennicutt Ⅱ M C,Brooks J M,Denoux G J. Leakage of deep, reservoired petroleum to the near surface of the Gulf of Mexico continental slope[J].Marine Chemistry,1988. 39-59.

    13 Roberts H H,Aharon P. Hydrocarbon-derived carbonate buildups of the northern Gulf of Mexico continental slope,a review of submersible investigations[J]. Geo-Marine Letters,1994.135-148.

    14 Roberts H H. Surficial geology of the middle and upper continental slope, northern Gulf of Mexico; the important role of episodic fluid venting[J].AAPG Bulletin,1996,(09):1511.

    15 Roberts H H,Carney R S. Evidence of episodic fluid,gas,and sediment venting on the northern Gulf of Mexico continental slope[J].Economic Geology,1997.863-879.

    16 Roberts H H. Fluid and gas expulsion on the Northern Gulf of Mexico continental slope. Mud-prone to mineral-prone responses[A].Washington DC,2001.145-161.

    17 Sassen R,Losh S L,Cathles Ⅲ L M. Massive vein-filling gas hydrate: Relation to ongoing gas migration from the deep subsurface in the Gulf of Mexico[J].Marine and Petroleum Geology,2001,(5):551-560.

    18 MacDonald I R,Leifer I,Sassen R. Transfer of hydrocarbons from natural seeps to the water column and atmosphere[J].Geofluids,2002,(02):95-107.

    19 MacDonald I R,Guinasso N L Jr,Ackleson S G. Natural oil slicks in the Golf of Mexico visible from space[J].Journal of Geophysical Research,1993,(C9):16351-16364.

    20 Milkov A V,Sassen R. Estimate of gas hydrate resource, northwestern Gulf of Mexico continental slope[J].Marine Geology, 2001.71-83.

    21 Sassen R,MacDonald I R. Evidence of structure H hydrate,Gulf of Mexico continental slope[J].Organic Geochemistry,1994,(06):1029-1032.

    22 MacDonald I R,Guinasso N L Jr,Sassen R. Gas hydrate that breaches the sea floor on the continental slope of the Gulf of Mexico[J].Geology,1994,(08):699-702.

    23 Kennicutt Ⅱ M C,Brooks J,M,Bidigare R R,. Vent type taxa in a hydrocarbon seep region on the Louisiana slope[J].Nature,1985.351-353.

    24 Booth J S,Rowe M M,Fischer K M. Offshore gas hydrate sample database, U.S[J].U S Geological Survey Open-File Report,1996.1-17.

    25 Sassen R,Sweet S T,Milkov A V. Stability of thermogenic gas hydrate in the Gulf of Mexico: Constraints on models of Climate Change[A].American Geophysical UnionWashington DC,2001.131-143.

    26 Sassen R,MacDonald IR,Guinasso N L Jr. Bacterial methane oxidation in sea-floor gas hydrate:Significance to life in extreme environments[J].Geology,1998,(09):851-854.

    27 Kornacki A S,Kendrick J W,Berry J L. Impact of oil and gas vents and slicks on petroleum exploration in the deepwater Gulf of Mexico[J].Geo-Marine Letters,1994.160-169.

    28 Sassen R,Joye S,Sweet S T. Thermogenic gas hydrates and hydrocarbon gases in complex chemosynthetic communities,Gulf of Mexico continental slope[J].Organic Geochemistry,1999.485-497.

    29 Sassen R,Sweet ST,Milkov AV. Geology and geochemistry of gas hydrates, Central Gulf of Mexico continental slope[J].Gulf Coast Association of Geological Societies Transactions, 1999.462-468.

    30 Sassen R,MacDonald I R. Hydrocarbons of experimental and natural gas hydrates,Gulf of Mexico continental slope[J].Organic Geochemistry,1997,(3-4):289-293.

    31 MacDonald I R,Buthman D B,Sager W W. Pulsed oil discharge from a mud volcano[J].Geology,2000.907-210.
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  • Received:  2004-05-05
  • Revised:  2004-12-19
  • Published:  2005-06-10

Evolution of Marine Gas Venting System and Impact on Gas Hydrate Crystallization

Abstract: Based on the kinetic model of hydrate crystallization from venting gas in gas vent system, the evolvement characteristics and the impacts on gas hydrate crystallization in the Bush Hill gas vent system in GC 185 of Gulf of Mexico were studied. The venting rates are fast ( gas flux q > 18.4 kg/m2-a) in the earlier stage of the gas vent system, mud volcano occurred on the seafloor, the vent gas has almost the same composition as the source gas, and the heaviest possible hydrates are crystallized near the surface. The venting rates are slow ( gas flux q < 0. 55 kg/m2-a)in the later stage, hydrate crystallization will not reach the sea floor, seep carbonate will be occurred on the seafloor.Between these extremes gas hydrate and seep community is developed on the seafloor of the gas vent system, and the vent and hydrate gas compositions, and the mass fraction of venting gas crystallized hydrate depend strongly on venting rate. Changes in vent and hydrate gas chemistry observed atmultip le submersible visits to the Bush Hill vent system suggest the variations of venting rates between different submersible visiting time and different locations over the last 10 years

CHEN Duo-fu, FENG Dong, CHEN Guang-qian, CHEN Xian-pei, Lawrence M Cathles. Evolution of Marine Gas Venting System and Impact on Gas Hydrate Crystallization[J]. Acta Sedimentologica Sinica, 2005, 23(2): 323-328.
Citation: CHEN Duo-fu, FENG Dong, CHEN Guang-qian, CHEN Xian-pei, Lawrence M Cathles. Evolution of Marine Gas Venting System and Impact on Gas Hydrate Crystallization[J]. Acta Sedimentologica Sinica, 2005, 23(2): 323-328.
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