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Title:
METHANE GAS RECOVERY METHOD, LOW CARBON DIOXIDE EMISSION POWER GENERATION METHOD, METHANE GAS RECOVERY SYSTEM, AND LOW CARBON DIOXIDE EMISSION POWER GENERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/159594
Kind Code:
A1
Abstract:
A methane gas recovery method for recovering methane gas from a methane hydrate layer, wherein the methane hydrate layer is preheated by injecting heated seawater in which carbon dioxide is dissolved and that is heated into one or more injection wells that pass through the methane hydrate layer, and the methane gas is recovered from the preheated methane hydrate layer using a reduced pressure method at one or more production wells that pass through the methane hydrate layer and that are provided locations at a set distance away from the injection wells. After a set time period has passed, the injection well is used as a production well and the methane gas is recovered from the production well, and a new injection well is dug and heated seawater is injected into the injection well so as to preheat the methane hydrate layer.

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Inventors:
MARUYAMA SHIGENAO (JP)
OKAJIMA JUNNOSUKE (JP)
KOMIYA ATSUKI (JP)
CHEN LIN (JP)
Application Number:
PCT/JP2018/007201
Publication Date:
September 07, 2018
Filing Date:
February 27, 2018
Export Citation:
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Assignee:
UNIV TOHOKU (JP)
International Classes:
E21B43/00; B01D53/62; B01D53/78; C01B32/50; E21B43/26
Domestic Patent References:
WO2014045815A12014-03-27
WO2007023943A12007-03-01
Foreign References:
JP2016223064A2016-12-28
JP2009030378A2009-02-12
JP2010261252A2010-11-18
JP2009512802A2009-03-26
JP2014502322A2014-01-30
JP2008095394A2008-04-24
JP2000061293A2000-02-29
US20130043678A12013-02-21
US20110272166A12011-11-10
JP5366300B22013-12-11
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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