Wells – With heating – refrigerating or heat insulating means
Patent
1974-11-14
1976-09-07
Novosad, Stephen J.
Wells
With heating, refrigerating or heat insulating means
166 63, 166 65R, 166177, 166212, 166187, 166308, E21B 2304, E21B 4326
Patent
active
039789217
ABSTRACT:
Apparatus and method for cryogenic flash freezing of confined water in a rock formation with concomitant fracturing of the rock formation utilizes an anchoring device comprising gripping means actuatable responsive to release of pressurized gas effected by opening a valve responsive to the firing of an explosive charge in combination with an elongated container for a cryogenic liquid so that the anchoring device may be positioned with said container depending therefrom in a hole in the rock formation and so that cryogenic liquid so held in position may be forcefully discharged from the container upon opening a valve responsive to the firing of an explosive charge for injection into water confined in the hole or in a cavity or crevice in the surrounding rock formation, the location of water to be flash frozen, if desired, being accomplished by a plug adapted to be fixed in place at different positions and to retain water thereon when fixed in place.
REFERENCES:
patent: 1498963 (1924-06-01), Haber
patent: 1639008 (1927-08-01), Shannon et al.
patent: 3118503 (1964-01-01), Rike et al.
patent: 3153449 (1964-10-01), Lebourg
patent: 3244232 (1966-04-01), Myers
patent: 3756317 (1973-09-01), Hall
Novosad Stephen J.
Parsell Richard K.
Shuffman Rose
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