中文摘要：

天然气水合物是21世纪的一种新型洁净能源，资源量大，分布广，其勘探开发技术已得到各国的重视。综合介绍了天然气水合物的概况及其分布，分析了目前提出的降压法、加热法、添加化学剂法等各种开采方式，介绍并对比了有关水合物藏开采计算的各种数学模型。研究认为TOUGH2通用数值模拟软件中加入的EDSHYDR模块是目前水合物藏开采计算的最佳模型。

英文摘要：

Natural gas hydrate, which is widely distributed with huge reserves, is a kind of nonpolluting and high quality energy resource for the future. How to exploit and develop this new energy is becoming a main concern among many governments. The types and distribution of natural gas hydrates were introduced, and the methods proposed for natural gas hydrates production, including depressurization, thermal method, inhibitor injection and other methods, were analyzed. The mathematical models for the simulation of natural gas hydrates production were described and compared, among which the EOSHYDR module in the TOUGH2 model is the best model at present.