Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
Patent
1980-11-12
1983-08-16
Purser, Ernest R.
Mining or in situ disintegration of hard material
In situ conversion of solid to fluid
Input and output wells
166271, 166299, 299 13, E21B 4328
Patent
active
043987699
ABSTRACT:
An in situ leaching or solution mining process is conducted in a subterranean cavity in communication with a well bore. The subterranean cavity is gradually enlarged by inducing spallation of formation particles and/or collapse of the roof into the cavity by repeatedly cycling the hydraulic pressure in the subterranean cavity. The hydraulic pressure is preferably increased during a period of at least about two hours. The hydraulic pressure can be gradually decreased during a period of at least about two hours or can be suddenly decreased. Rapid pressure pulses can be applied to liquid in the subterranean cavity by detonation of shaped charges of explosive with the axis of force of the charge being directed along the axis of the well.
REFERENCES:
patent: Re21356 (1940-02-01), Pitzer
patent: 2676662 (1954-04-01), Ritzmann
patent: 2850270 (1956-03-01), Hanson
patent: 2915122 (1959-12-01), Hulse
patent: 3048226 (1962-08-01), Smith
patent: 3070010 (1962-12-01), Robinson
patent: 3086760 (1963-04-01), Bays
patent: 3215074 (1965-11-01), Robinson et al.
patent: 3387888 (1968-06-01), Shock et al.
patent: 3455383 (1969-07-01), Prats et al.
patent: 3890007 (1975-06-01), Heinen et al.
patent: 3933205 (1976-01-01), Kiel
patent: 3964792 (1976-06-01), Archibald
patent: 3964792 (1976-06-01), Archibald
patent: 4018293 (1977-04-01), Keller
patent: 4039030 (1977-08-01), Godfrey et al.
patent: 4163580 (1979-08-01), Pearson et al.
patent: 4265311 (1981-05-01), Ely
Pages 50 through 58 of Hydraulic Fracturing by G. C. Howard and C. R. Fast, Society of Petroleum Engineers of AIME (1970).
Occidental Research Corporation
Purser Ernest R.
LandOfFree
Method for fragmenting underground formations by hydraulic press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for fragmenting underground formations by hydraulic press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for fragmenting underground formations by hydraulic press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-810768