Gas production by depressurization from hypothetical Class 1G and Class 1W hydrate reservoirs
Gas production by depressurization from hypothetical Class 1G and Class 1W hydrate reservoirs
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DOI：
10.1016/j.enconman.2007.01.009
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发表时间：
2007-06-01
影响因子：
10.4
通讯作者：
Moridis, George J.
中科院分区：
文献类型：
--
作者：
Alp, Doruk;Parlaktuna, Mahmut;Moridis, George J.
我们研究了两种类型的1类矿床的天然气生产：1G类水合物存款（水合物带中的气体）和1W类水合物存款（水合物带中的水）。在这些储层的开采过程中，在水合物层段的顶部出现二次解离前缘并向下推进，而原始水合物界面向上移动。井筒加热对1W类储层的生产很重要，但在1G类矿床的生产过程中似乎没有显著影响。这项研究表明，水合物对一类矿床的天然气生产做出了重大贡献。在20年的时间里，水合物分解贡献了IG类矿床高达50%的生产率和高达38%的累积产气量，而1W类储层的相应数字分别高达60%和32%。在生产过程中，水合物透镜体（水合物饱和度高低交替的带）在1W类和1G类矿床中形成。(C)2007爱思唯尔有限公司保留所有权利。
We study gas production from two types of Class 1 deposits: a Class 1G hydrate deposit (gas in the hydrate zone) and a Class 1W hydrate deposit (water in the hydrate zone). During production from these reservoirs, a secondary dissociation front appears at the top of the hydrate interval and advances downward, while the original hydrate interface moves upward. Wellbore heating is important to production from Class 1W accumulations, but does not appear to have a significant effect during production from Class 1G deposits. This study indicates that hydrates make significant contributions to gas production from Class 1 deposits. Over a 20-year period, hydrate dissociation contributes up to 50% of the production rate and up to 38% of the cumulative volume of produced gas in the case of the Class IG deposits, while the corresponding numbers for the Class 1W reservoir are up to 60% and 32%, respectively. During production, hydrate lenses (bands of alternating high-low hydrate saturation) develop in both Class 1W and Class 1G deposits. (C) 2007 Elsevier Ltd. All rights reserved.