海洋天然气水合物的巨大储量刺激了世界各国能源部门努力研究如何从天然气水合物储层生产天然气。根据水合物形成的条件，只有当水合物处在其相平衡条件以外，水合物才能分解。因此，水合物的开采方法只能为热熔法、抑制剂刺激法、减压法和地面分解法。为

了对天然气水合物储层中气体的生产有个定量的评估，本文以水合物开采井为例，运用数学方法推导了水合物井中气体的产生量。结果表明，在天然气水合物储层中，天然气释放量是井内水合物分解温度、压力及水合物层气体渗透性的敏感函数。该函数可以用于天然

气水合物井气体开采量的计算及对水合物储层可开采性评价。

The authors explore the potential of gas hydrates as a source of energy. They discuss the methods for gas production from gas hydrates, which is widely available in permafrost and oceanic sediments. These hydrocarbon deposits have stimulated worldwide

efforts to understand gas production from hydrate dissociation in hydrate reservoir wells. According to formation conditions of gas hydrates, the production of gas hydrates can only be done through thermal injection, inhibitor injection, or depressurization.

In order to quantitatively assess gas production of natural gas hydrate reservoirs, a gas hydrate exploration well was used as an example to derive the gas volume produced from hydrate reservoir wells by using mathematical methods. The results show that

in gas hydrate reservoirs, the gas volume released from reservoir wells is a sensitive function of temperature and pressure of the boreholes and permeability of the gas hydrate. The function can be used to calculate gas volume produced from gas hydrate

wells and to evaluate the recoverability of gas hydrate reservoirs.