Title:
GAS COLLECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/126533
Kind Code:
A1
Abstract:
A gas collection method for collecting gas produced from a raw material (PL) present in a seabed (L1) or lakebed, wherein: [1] a collection film (11) is dropped into the water, fixing tools (31) being connected to the lower end of the collection film (11), and the collection film (11) comprising a film body expanding downward from a top part (T1); [2] the three-dimensional positions of the fixing tools (31) in the water are perceived by position-maintaining tools (31) provided to the fixing tools (31), and the three-dimensional positions of the fixing tools (31) are maintained at the desired positions by autonomous navigation; [3] on the basis of the water temperature distribution in the vertical direction acquired by a CTD, the lower end of the collection film (11) is set to a position that is higher than the seabed (L1) or lakebed and shallower than the water depth at which the raw material (PL) separates from a solid state into water and gas, and the top part (T1) of the collection film (11) is set to a position deeper than the water depth at which gas mixes with the seawater or lake water and gas bubbles disappear; and [4] gas released from the seabed (L1) or lakebed is collected by the collection film (11).
Inventors:
AOYAMA CHIHARU (JP)
AOYAMA DAIKI (JP)
AOYAMA DAIKI (JP)
Application Number:
PCT/JP2017/001500
Publication Date:
July 27, 2017
Filing Date:
January 18, 2017
Export Citation:
Assignee:
AOYAMA CHIHARU (JP)
International Classes:
E21B43/00
Domestic Patent References:
| WO2006070577A1 | 2006-07-06 |
Foreign References:
| JP3184629U | 2013-07-11 | |||
| JPH1029785A | 1998-02-03 | |||
| US4749254A | 1988-06-07 | |||
| US20150354957A1 | 2015-12-10 | |||
| US3926056A | 1975-12-16 | |||
| JP2000282775A | 2000-10-10 | |||
| JP2012021357A | 2012-02-02 |
Other References:
See also references of EP 3428384A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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