天然气水合物物性分析测试技术

Analytical and testing technique of natural gas hydrate physical property

深入研究了天然气水合物物性分析测试技术,认为沉积物中天然气水合物物性测试没有超出石油天然气储层岩石物性分析的范畴,其测试技术主要是借用和改造在其它领域成熟应用的先进测试技术。因天然气水合物的低温、高压赋存条件的特殊性,增加了模拟环境设备与测试的复杂性。天然气水合物物性测量装置以一维小实验模型为主,且向超低温、超高压方法发展,测试方法趋于多样化。研究指出,天然气水合物模拟实验装置系统结构与性能参数的设计应在满足实验需求的前提下,更多关注实验数据的准确性、实验设备的可靠性和实验操作的便利性。

A deep study on the analytical and testing technique of natural gas hydrate(NGH) physical property indicates that the physical property tests of NGH in sediments do not exceed the range of the rock physical property analysis of oil and gas reservoir, and the testing technique is mainly borrowing and transforming from the advanced testing techniques which have been maturely applied in other areas. Due to the specific characteristics of the NGH occurrence conditions(e.g.low temperature and high pressure), the complexity of the simulation environment equipment and measurement has been increased. The measurement devices for NGH physical property are mainly small one-dimensional experiment models, which are tending towards to ultra-low temperature and ultra-high pressure as well as diversified testing methods. The research suggests that the design of the system structure and performance parameters of NGH simulation experiment device should pay more attention to the accuracy of experimental data, the reliability of the experiment equipment and the convenience of the experiment operation, on the premise to meet the experiment requirements.