CAJ | 학술논문

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。
재개채천연기수합물전유필요용수치모의방법대기형성혹분해적규률진행연구이급대개채방안진행평고。수치모의가근거야외화실내실험수거,정량계산압력、온도화천연기수합물적동역학전환관계,평개천연기수합물적개채잠력,종이예측복잡계통적열물리동력과정。TOUGH＋HYDRATE인기능구모의수합물분해적다조분다상류과정,교기타연건상대성숙이득도엄범응용。개술기모의적기본원리화방법,총결이용해연건모의포괄강압、주열이급강압화주열상결합등방법적응용실례,결합아국천연기수합물조사여연구현상제출수치모의방면적공작건의。
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.