天然气水合物稳定带

天然气水合物稳定带的计算方法与参数选择探讨

Discussion of the Calculation Methods and Selection of Parameters of the Gas Hydrate Stability Zone

由于天然气水合物稳定带计算控制因素难以准确确定等因素，似海底反射与天然气水合物稳定带底界只是近似的对应关系。

Due to the difficulty to exactly determine in site controlling factors about gas hydrate stability zone calculation and others , BSRs are approximately corresponding to the BGHS .

Net编程分析在该海域范围内天然气水合物稳定带厚度，讨论其分布特征，并以此来评估该区域的水合物资源量。

Net program is proposed to compute the thickness of the gas hydrate stability zone and potential volume of gas hydrate in the region .

假定南海南部温度梯度范围为59&90℃·km-1，得天然气水合物稳定带厚度与水深的关系方程。

Assuming that the thermal gradient in the sediments of the southern South China Sea ranges from 59 to 90 (℃· km ~ ( - 1 )), we obtain the function of the thickness of the gas hydrate stability zone ( GHSZ ) versus the water depth .

南海天然气水合物稳定带的影响因素

Factors affecting natural gas hydrate stability zone in the South China Sea

海底天然气水合物稳定带的特征分析

Character analysis of the marine gas hydrate stability zone

通过简单评价天然气水合物稳定带计算的几种方法和参数选择，认为选择压力计算公式时要考虑孔隙水产生的压力、海底以上水柱的压力和大气压；

The authors simply evaluate several methods and the selection of parameters for the calculation of the gas hydrate stability zone . The results show that we must consider pore-water pressure , water-column pressure and atmospheric pressure when we select the pressure formula .

天然气水合物的稳定带受海底温度、沉积层地温梯度、压力、沉积物气体成分和流体盐度等影响，地温梯度值是确定水合物稳定带厚度的一个重要参数。

Gas hydrate stability zone is influenced by the sea temperature and sediment geothermal gradient , pressure , sediment elements , and fluid salinity . Geothermal gradient value is an important parameter to determine the thickness of hydrate stability zone .