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首页> 外文期刊>Journal of Geological Research >Estimating Pore Space Hydrate Saturation Using Dissociation Gas Evolution Measurements: In Relevance to Laboratory Testing of Natural or Artificially Synthesised Hydrate-Bearing Soil Specimens
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Estimating Pore Space Hydrate Saturation Using Dissociation Gas Evolution Measurements: In Relevance to Laboratory Testing of Natural or Artificially Synthesised Hydrate-Bearing Soil Specimens

机译：使用解离气体析出测量估算孔隙空间水合物饱和度：与天然或人工合成的带有水合物的土壤样品的实验室测试有关

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Physical properties of gas hydrate-bearing soils are known to be greatly affected by the pore space hydrate saturation. The accuracy of most saturation estimation methods is affected by hydrate growth habit and pore space distribution. We highlight the usefulness of dissociation gas evolution measurement (DGEM) method as a reference laboratory method to calibrate most other methods. The DGEM method is based on the concept of mass balance and properties of volume compatibility between two distinct states of a closed system. The accuracy of the estimation depends on (1) the precision with which the laboratory measurements of temperature, pressure, and volumetric properties are obtained (2) and the ability of theoretical models used in the calculation to closely represent the true nature of the system. We perform an analysis to evaluate the sensitivity of the estimation (1) to various laboratory measurements and (2) to the use of different theoretical models to generate a feel for the appropriateness of various assumptions associated with DGEM. The comprehensive guide to available resources useful in the hydrate saturation estimation also serves as one of the major contributions of the work presented.
机译：已知含气水合物的土壤的物理特性会受到孔隙空间水合物饱和度的极大影响。大多数饱和度估算方法的准确性受水合物生长习性和孔隙空间分布的影响。我们强调了离解气体析出测量（DGEM）方法作为校准大多数其他方法的参考实验室方法的有用性。 DGEM方法基于质量平衡和封闭系统两个不同状态之间的体积相容性的概念。估算的准确性取决于（1）获得实验室测量的温度，压力和体积特性的精度（2）以及计算中使用的理论模型能够准确代表系统真实性质的能力。我们进行分析以评估估计的敏感性（1）对各种实验室测量的敏感性，以及（2）对使用不同理论模型的敏感性，以得出与DGEM相关的各种假设是否适当的感觉。关于可用于水合物饱和度估算的可用资源的综合指南，也是提出的工作的主要贡献之一。

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