Title:
GAS HYDRATE RECOVERY METHOD AND GAS HYDRATE RECOVERY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/088053
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a gas hydrate recovery method and a gas hydrate recovery device that can suppress changes in an underwater environment caused by gas hydrate recovery. Provided is a gas hydrate recovery method in which a riser pipe 4 is extended from a gas separation tank 5 down toward the water bottom 2 and in which a gas hydrate aggregation m is suctioned and lifted along with water from the water bottom 2 from a recovery opening 4a on the bottom of the riser pipe 4 to the gas separation tank 5, wherein a discharge pipe 9 is extended from the gas separation tank 5 toward the water bottom 2, and all of the water from the water bottom 2 taken up from the recovery opening 4a is discharged to the water bottom 2 from a discharge opening 9a on the bottom of the discharge pipe 9.
Inventors:
KATO TOSHIHITO (JP)
Application Number:
PCT/JP2017/035138
Publication Date:
May 17, 2018
Filing Date:
September 28, 2017
Export Citation:
Assignee:
MITSUI SHIPBUILDING ENG (JP)
International Classes:
E21B43/01; E21C50/00
Domestic Patent References:
| WO2015005782A1 | 2015-01-15 | |||
| WO2015005785A2 | 2015-01-15 | |||
| WO2015190280A1 | 2015-12-17 |
Foreign References:
| JP2015031097A | 2015-02-16 | |||
| JP2011196047A | 2011-10-06 | |||
| JP2012518102A | 2012-08-09 | |||
| JP2006037518A | 2006-02-09 | |||
| JP2015202486A | 2015-11-16 | |||
| JP2011207537A | 2011-10-20 | |||
| JP2015001099A | 2015-01-05 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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