A Preliminary Study of the Gas Hydrate Stability Zone in the South China Sea

作     者：JIN Chunshuang WANG Jiyang 

作者机构：Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029 Strategic Research Center for Oil and Gas ResourcesMinistry of Land and ResourcesBeijing 100034 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2002年第76卷第4期

页      面：423-428页

核心收录：

学科分类：0709[理学-地质学] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：the Marine 863 Project(Grant 820-Exploration-5) 

主　　题：South China Sea gas hydrate stability zone geothermal gradient sea-bottomtemperature 

摘      要：Based on the analysis of sea-bottom temperature and geothermal gradient, andby means of the phase boundary curve of gas hydrate and the sea-bottom temperature versus waterdepth curve in the South China Sea, this paper studies the temperature and pressure conditions forgas hydrate to keep stable. In a marine environment, methane hydrate keeps stable at water depthsgreater than 550 min the South China Sea. Further, the thickness of the gas hydrate stability zonein the South China Sea was calculated by using the phase boundary curve and temperature-depthequations. The result shows that gas hydrate have a better perspective in the southeast of theDongsha Islands. the northeast of the Xisha Islands and the north of the Nansha Islands for thickerstability zones.