Wells – Processes – Distinct – separate injection and producing wells
Patent
1975-06-11
1976-11-09
Purser, Ernest R.
Wells
Processes
Distinct, separate injection and producing wells
166259, E21B 4324, E21B 4326
Patent
active
039905144
ABSTRACT:
The method connecting wells by hydraulic-fracturing of a mineral bed, primarily for connection of wells in underground gasification of coal beds; using hydraulic-fracturing of a bed is effected intermediate a source-well into which a liquid is pumped under pressure and a well in the required direction; the head of the well with which connection is to be effected is sealed, whereas the heads of the wells, with which connection is undesirable, are opened; the liquid is pumped into the source-well under a pressure sufficient for initiating hydraulic-fracturing; the pressure in the well with which the source-well is to be connected is measured, and the moment the pressure in this well attains the hydraulic-fracturing value, the head thereof is immediately opened; upon the formation of a hydraulic fracturing fissure, the latter is flushed with the liquid; the method provides for building up a hydraulic-fracturing pressure in the well with which connection of the source-well is to be effected and thus controlling the direction of the formation of a hydraulic fracturing fissure.
REFERENCES:
patent: 2914304 (1959-11-01), Ljungstrom
patent: 3004594 (1961-10-01), Crawford
patent: 3329207 (1967-07-01), Shock et al.
patent: 3709295 (1973-01-01), Braunlich, Jr. et al.
patent: 3775073 (1973-11-01), Rhoades
Antonova Roza Ivanovna
Fedorov Nikolai Ananievich
Gershevich Elfrica Girshevna
Kreinin Efim Vulfovich
Volk Alfei Fedorovich
Purser Ernest R.
Suckfield George A.
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