AGGREGATE FOR GAS-HYDRATES EXTRACTION Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: aggregate has outer string 1 with openings 2, casing string 3 with ring-type bulge 4 to locate cylindrical sleeve 9 on it. Aggregate has central mixing chamber 14, forms with casing string 3 thermal chamber 23 and with outer string 1 - ring-type mixing chamber 24. Inner string 7 has coupling, that has body 15 and spring-loaded balls 16 with canals 17 for hydraulic connection of area of water with inner string 7. Water of higher temperature goes through canals into thermal chamber 23 and gives part of warm to casing string 3 and the latter - to layer. Hydrates falls apart into gas and water. Gas passes in chamber 24 and water - in thermal chamber 23, mixing with water of water area. Than through openings 13 it goes to chamber 14. From the chamber cooled water through canals 11 moves into chamber 24. Than their separation takes place. EFFECT: aggregate for gas-hydrates extraction is used in boreholes hydraulic extraction of minerals. 2 cl, 1 dwg