一种开采天然气水合物的新方法——注高温海水法

A Method of Exploitation Gas Hydrate—Injection Hot Sea Water Method

向海洋天然气水合物中注入热海水1h后,水合物开始分解产生大量甲烷气体,系统压力呈线性增加,2h后压力缓慢上升;水合物分解率随温度升高而增加;随注入流量的加大其分解率也增加;但分解率随时间不是无限的增加,而是在10h以后趋于稳定状态;在管线和反应器里发现了固体沉淀。

With the method of injecting hot sea water to oceanic natural gas hydrate,experiments show that gas hydrate begins to dissociate a large of methane gas under injection hot sea water one hour later.System pressure slowly rises when it increases as linearity after two hours.The rate of hydrate dissociation increases with the temperature rising.Enlargement of injection flow rate increases the dissociation rate also.However the dissociation rate doesn′t increase with the time but tends to be steady state after ten hours.Solid precipitation is found during the pipeline and reactor.