GAS COLLECTION METHOD

• Main Authors: AOYAMA Chiharu, AOYAMA Daiki
• Format: Patent
• Language: English; French; German
• Published: 14.06.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

In a gas collecting method for collecting gas yielding from source material (PL) that exists on a sea bottom (L1) or a lake bottom, [1] releasing a collecting membrane (11) into water, a fixture being connected with a lower end of the collecting membrane (11) and the collecting membrane (11) being configured of a membrane that flares downward from its top; [2] by a position maintainer (31) provided in the fixture (31), recognizing a three-dimensional position of the fixture in the water and then keeping the three-dimensional position of the fixture (31) at a target position by its autonomous navigation; [3] based on vertical water temperature distribution obtained by an CTD, setting the lower end of the collecting membrane (11) at a position that is higher than the sea bottom (L1) or the lake bottom and shallower than a water depth where the source material (PL) separates from its solid state into water and gas and setting the top (T1) of the collecting membrane (11) at a deeper position than a water depth where bubbles of the gas disappear due to mixture of the gas with seawater or lakewater; and [4] collecting the gas released from the sea bottom (L1) or the lake bottom by the collecting membrane (11).