CAJ | 학술논문

分析了天然气水合物注蒸汽开采机理,建立了注蒸汽开采天然气水合物数学物理模型,通过数值模拟,对注汽温度、作用时间两个参数进行研究,获得天然气水合物的温度场变化情况.模拟结果表明:当作用时间和注汽温度两个参数同时增加时,他们是相互促进的关系.作用时间增长有利于热量渗入天然气水合物孔隙和天然气水合物表面;注汽温度增大促进了温度场的扩展.故同时增大作用时间和温度对开采天然气水合物是有利的.
분석료천연기수합물주증기개채궤리,건립료주증기개채천연기수합물수학물리모형,통과수치모의,대주기온도、작용시간량개삼수진행연구,획득천연기수합물적온도장변화정황.모의결과표명:당작용시간화주기온도량개삼수동시증가시,타문시상호촉진적관계.작용시간증장유리우열량삼입천연기수합물공극화천연기수합물표면;주기온도증대촉진료온도장적확전.고동시증대작용시간화온도대개채천연기수합물시유리적.
The mechanism of thermal stimulation exploitation for natural gas hydrate was analyzed, and the mathematical-physical model was established. Numerical simulation was carried out to obtain the temperature field distribution of natural gas hydrate. Two influence factors (injection temperature and acting time) were considered. The results show that injection temperature and acting time can promote each other. The prolonging acting time is good for the heat infiltration to the pore space and surface of natural gas hydrate. The increasing injection temperature can promote the expansion of temperature field. Therefore, increasing acting time and injection temperature are beneficial for exploitation of natural gas hydrate.