Wells – Processes – Heating – cooling or insulating
Patent
1976-04-29
1977-03-08
Novosad, Stephen J.
Wells
Processes
Heating, cooling or insulating
166308, E21B 4324, E21B 4326
Patent
active
040108031
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: 895612 (1908-08-01), Baker
patent: 2777679 (1957-01-01), Ljungstrom
patent: 3100528 (1963-08-01), Plummer
patent: 3108636 (1963-10-01), Peterson
patent: 3152651 (1964-10-01), Ross
patent: 3167120 (1965-01-01), Pryor
patent: 3358763 (1967-12-01), Petty et al.
patent: 3393741 (1968-07-01), Huitt et al.
patent: 3396107 (1968-08-01), Hill
patent: 3664422 (1972-05-01), Bullen
Novosad Stephen J.
Parsell Richard K.
Shuffman, executrix Rose
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