摘要
在开采天然气水合物前有必要用数值模拟方法对其形成或分解的规律进行研究以及对开采方案进行评估。数值模拟可根据野外和室内实验数据,定量计算压力、温度和天然气水合物的动力学转换关系,评价天然气水合物的开采潜力,从而预测复杂系统的热物理动力过程。TOUGH+HYDRATE因其能够模拟水合物分解的多组分多相流过程,较其他软件相对成熟而得到广泛应用。概述其模拟的基本原理和方法,总结利用该软件模拟包括降压、注热以及降压和注热相结合等方法的应用实例,结合我国天然气水合物调查与研究现状提出数值模拟方面的工作建议。
Before drilling for natural gas hydrate（NGH）,it is necessary to use a numerical simulation method to study its formation and/or decomposition,and to identify a suitable scheme for its exploration.According to both field and laboratory experimental data,numerical simulations can be used to quantitatively calculate the dynamic transformation relationships among pressure,temperature,and NGH,and to evaluate the potential for NGH production by predicting the thermal physical dynamic processes involved in its occurrence.The TOUGH＋HYDRATE software is used to simulate the decomposition process of NGH with respect to multicomponent and multiphase flow.The basic principles and methods used in the software are described,and an example is given of the application of simulations using the software,including depressurization,thermal stimulation,and the combination of both.The paper discusses current research and numerical simulation work being conducted with regard to investigations of NGH in China.
出处
《上海国土资源》
2013年第2期71-75,79,共6页
Shanghai Land & Resources
基金
国家能源应用技术及工程示范项目(NY20111102-1)
