| A Preliminary Study of the Gas Hydrate Stability Zone in the South China Sea |
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| 作者姓名： | JIN Chunshuang and WANG JiyangInstitute of Geology and Geophysics Chinese Academy of Sciences Beijing Strategic Research Center for Oil and Gas Resources Ministry of Land and Resources Beijing |
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| 作者单位： | JIN Chunshuang and WANG JiyangInstitute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029Strategic Research Center for Oil and Gas Resources，Ministry of Land and Resources，Beijing 100034 |
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| 摘 要： | Based on the analysis of sea-bottom temperature and geothermal gradient, and by means of the phase boundary curve of gas hydrate and the sea-bottom temperature versus water depth curve in the South China Sea, this paper studies the temperature and pressure conditions for gas hydrate to keep stable. In a marine environment, methane hydrate keeps stable at water depths greater than 550 m in the South China Sea. Further, the thickness of the gas hydrate stability zone in the South China Sea was calculated by using the phase boundary curve and temperature-depth equations. The result shows that gas hydrate have a better perspective in the southeast of the Dongsha Islands, the northeast of the Xisha Islands and the north of the Nansha Islands for thicker stability zones.
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A Preliminary Study of the Gas Hydrate Stability Zone in the South China Sea |
| |
| Authors: | JIN Chunshuang and WANG JiyangInstitute of Geology and Geophysics Chinese Academy of Sciences Beijing Strategic Research Center for Oil and Gas Resources Ministry of Land and Resources Beijing |
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| Abstract: | Based on the analysis of sea-bottom temperature and geothermal gradient, and by means of the phase boundary curve of gas hydrate and the sea-bottom temperature versus water depth curve in the South China Sea, this paper studies the temperature and pressure conditions for gas hydrate to keep stable. In a marine environment, methane hydrate keeps stable at water depths greater than 550 m in the South China Sea. Further, the thickness of the gas hydrate stability zone in the South China Sea was calculated by using the phase boundary curve and temperature-depth equations. The result shows that gas hydrate have a better perspective in the southeast of the Dongsha Islands, the northeast of the Xisha Islands and the north of the Nansha Islands for thicker stability zones. |
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| Keywords: | South China Sea gas hydrate stability zone geothermal gradient sea-bottom temperature |
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