UNIT FOR MINING GAS-HYDRATE POOLS Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: unit for mining gas-hydrate pools has outer output, central tubing and auxiliary strings with combined side ports; connected to port ends are upper parts of walls of concentric chambers of collector having outlet channels. Casing with lower and upper holes is installed round the collector whose central channels is communicated with outer circular chamber, and inner circular chamber is communicated by means of channels with lower holes of casing. Upper holes of casing are communicated by means of valves with intertube annulus. Besides, hollows of chambers may be filled with heavy fluid and installed in ends of inner circular chamber may be perforated partitions with metal granules arranged between them. EFFECT: higher efficiency. 3 cl, 3 dwg