公开(公告)号：US09429003B2

公开(公告)日：2016-08-30

申请号：US14328953

申请日：2014-07-11

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Huen Lee ,  Dong Yeun Koh

IPC: E21B43/16 ,  E21B43/295 ,  E21B43/01

CPC classification number: E21B43/164 ,  E21B43/01 ,  E21B43/295 ,  E21B2043/0115 ,  Y02P90/70

Abstract: Methods for recovering methane gas from natural gas hydrates are provided. A representative method includes the step of adding a gas mixture containing air and carbon dioxide to a natural gas hydrate (NGH), the step of replacing the methane gas with the gas mixture, and the step of decomposition-replacement of methane hydrate.

Abstract translation: 提供从天然气水合物中回收甲烷气体的方法。 代表性的方法包括向天然气水合物（NGH）中加入含有空气和二氧化碳的气体混合物的步骤，用气体混合物代替甲烷气体的步骤以及分解替换甲烷水合物的步骤。

公开(公告)号：US20150107826A1

公开(公告)日：2015-04-23

申请号：US14328953

申请日：2014-07-11

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Huen Lee ,  Dong Yeun Koh

IPC: E21B43/16 ,  E21B47/00 ,  E21B47/06 ,  E21B43/01

CPC classification number: E21B43/164 ,  E21B43/01 ,  E21B43/295 ,  E21B2043/0115 ,  Y02P90/70

Abstract: The present invention relates to a method for recovering methane gas from natural gas hydrates. In particular, it includes the step of adding a gas mixture containing air and carbon dioxide to an NGH of deep sea and the step of replacing the methane gas with gas mixture and the step of decomposition-replacement of methane hydrate.In accordance with the present invention, the invention is possible use as a technique for recovery of methane gas in the all-weather to induce replacement reaction using a gas mixture when the temperature of the technology applied is low and to induce degradation of solid methane hydrate by mixing gas when the temperature of the region technique is applied is high.Further, the method makes it possible to reduce costs than using conventional methods because the air is collected directly from the NGH reservoirs and compressed and is injected as a mixture with carbon dioxide and, there is no need to transport the infusion another gas. The invention may be widely used in the production of natural gas more effectively.

Abstract translation: 本发明涉及从天然气水合物中回收甲烷气体的方法。 具体而言，包括将含有空气和二氧化碳的气体混合物添加到深海NGH的步骤以及用气体混合物代替甲烷气体的步骤以及分解替换甲烷水合物的步骤。 根据本发明，本发明可用作全天候回收甲烷气体的技术，当所用技术的温度低时，使用气体混合物诱导置换反应并引起固体甲烷水合物的降解 当应用区域技术的温度高时，通过混合气体。 此外，该方法与使用常规方法相比可以降低成本，因为空气直接从NGH储存器收集并被压缩并与二氧化碳混合注入，并且不需要输送另外的气体。 本发明可以更有效地广泛用于天然气的生产。