FIELD: oil and gas production.
SUBSTANCE: upper layer of accumulation of gas hydrates is gradually dissolved with water which is not saturated gas solution and has natural temperature of basin. Water is supplied to a bell lowered to the bottom; in the bell there is generated water-gas mixture with methane and its homologues. First mixture of methane and homologues is pumped to surface by force, further, it is gas-lifted. Water supplied into the bell is distributed along internal surface of its wall by means of thin pipes equipped at ends in a lower part of the bell with hydrants-sprayers to provide forced supply of water in different directions and to undercut bottom deposits of gas hydrates.
EFFECT: reduced material and operational expenditures and ecological consequences at gas extraction territory.
4 cl, 4 dwg
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