Title:
METHOD AND EQUIPMENT FOR DISSOCIATION OF METHANE HYDRATE
Document Type and Number:
WIPO Patent Application WO/2011/001792
Kind Code:
A1
Abstract:
In order to collect methane from methane hydrate (MH) present in a methane hydrate bed with low electric-power consumption safely and efficiently, provided is a method which comprises: reducing the ambient pressure of a methane hydrate sediment bed to a prescribed level; injecting an electrolyte solution into the resulting methane hydrate sediment bed; passing an electric current between multiple electrodes inserted into the methane hydrate sediment bed to raise the temperature of the methane hydrate sediment and thus dissociate the methane hydrate into methane and water; and continuing the passing of an electric current therebetween, while preferentially discharging the methane thus separated and thereby keeping the rate of penetration of water into the methane hydrate sediment bed.
Inventors:
MINAGAWA HIDEKI (JP)
NARITA HIDEO (JP)
NARITA HIDEO (JP)
Application Number:
PCT/JP2010/059597
Publication Date:
January 06, 2011
Filing Date:
June 07, 2010
Export Citation:
Assignee:
NAT INST OF ADVANCED IND SCIEN (JP)
MINAGAWA HIDEKI (JP)
NARITA HIDEO (JP)
MINAGAWA HIDEKI (JP)
NARITA HIDEO (JP)
International Classes:
E21B43/00; E21C50/00
Foreign References:
| US3916993A | 1975-11-04 |
Other References:
HIROYUKI OYAMA ET AL.: "Dissociation Behavior Analysis of Methane Hydrate-bearing Sediments by Using Depressurization or Depressurization with Well-wall Heating Method", THE JAPAN INSTITUTE OF ENERGY TAIKAI KOEN YOSHISHU, vol. 16, 2 August 2007 (2007-08-02), pages 54 - 55
Attorney, Agent or Firm:
NAKANO OSAMI (JP)
Osami Nakano (JP)
Osami Nakano (JP)
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