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Title:
GAS PRODUCTION METHOD AND SYSTEM FOR NATURAL GAS HYDRATE EXPLOITATION
Document Type and Number:
WIPO Patent Application WO/2019/134220
Kind Code:
A1
Abstract:
A gas production method and system for natural gas hydrate exploitation. The gas production method uses the gas lift effect of methane gas released by decomposition of a natural gas hydrate to transport gas hydrate from the bottom of a production well to an offshore platform via a marine vertical pipe, thereby realizing controlled flow production of a marine natural gas hydrate. The gas production system comprises an offshore platform (9) having a gas-liquid separator (8), a gas storage tank (7), and a compressor (6), a production well (13) vertically disposed on a seabed rock layer, a marine vertical pipe (10), and a submarine gas-liquid cyclone separator (11). The gas production method and apparatus are simple, easy to operate, consume less energy and eliminate the need for moving equipment on the seabed. Industrialization and automated production is easily achieved, effectively avoiding the risk of clogging caused by the formation of a secondary hydrate in the marine vertical pipe. The method and system have a wide application range.

Inventors:
CHEN, Zhaoyang (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
LI, Xiaosen (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
ZHANG, Jinming (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
ZHANG, Yu (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
LI, Gang (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
LV, Qiunan (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
WANG, Yi (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
YAN, Kefeng (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
Application Number:
CN2018/076449
Publication Date:
July 11, 2019
Filing Date:
February 12, 2018
Export Citation:
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Assignee:
GUANGZHOU INSTITUTE OF ENERGY CONVERSION, CHINESE ACADEMY OF SCIENCES (No.2, Nengyuan Road Wushan, Tianhe Distric, Guangzhou Guangdong 0, 510640, CN)
International Classes:
E21C50/00
Foreign References:
CN101016841A2007-08-15
CN106761588A2017-05-31
CN103216219A2013-07-24
RU2617748C12017-04-26
RU2550164C12015-05-10
US20120193103A12012-08-02
Attorney, Agent or Firm:
GUANGZHOU KEYUE I.P. LAW OFFICE (Room 616, 6/F Building 23-1, No.100, Xianlie Central Road, Yuexiu Distric, Guangzhou Guangdong 0, 510070, CN)
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