Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
Patent
1982-08-06
1984-03-27
Suchfield, George A.
Mining or in situ disintegration of hard material
In situ conversion of solid to fluid
Input and output wells
166270, 166271, 166281, 166292, 166295, E21B 4326, E21B 4328, E21B 33138
Patent
active
044389760
ABSTRACT:
In an acidic in situ leaching system, a short circuit passage through a subterranean formation between a fracture associated with an injection well and a fracture associated with a production well can be plugged by introducing a non-acidic liquid for displacing acidic leach liquid from the short circuit passage, introducing into the injection well a basic composition including a sealing material that gels under acidic conditions, and introducing sufficient liquid into the injection well to displace at least a portion of the basic composition containing sealing material from the injection well into the short circuit passage. Liquid flow between the injection well and the production well is then discontinued for a sufficient time for residual acid in the subterranean formation surrounding the short circuit passage to contact the sealing material and cause gelation of the sealing material in the short circuit passage. The introduction of acidic leach liquid to the formation can then continue. The sealing material may be a polymer or a water soluble silicate.
REFERENCES:
patent: 2122452 (1938-07-01), Clason
patent: 3199586 (1965-08-01), Henderson et al.
patent: 3486559 (1969-12-01), Flickinger et al.
patent: 3500913 (1970-03-01), Nordgren et al.
patent: 3583167 (1971-06-01), Parks
patent: 3612608 (1971-10-01), Manker et al.
patent: 3733833 (1973-05-01), Parks
patent: 3743020 (1973-07-01), Suman, Jr. et al.
patent: 3795276 (1974-03-01), Eilers et al.
patent: 3967681 (1976-07-01), Curzon
patent: 4018286 (1977-04-01), Gall et al.
patent: 4043599 (1977-08-01), Lingane et al.
patent: 4091868 (1978-05-01), Kozlowski et al.
patent: 4147211 (1979-04-01), Sandiford
patent: 4290485 (1981-09-01), Free et al.
patent: 4386806 (1983-06-01), Axen et al.
Brochure re Dowell Additive M-174, Dowell Division of the Dow Chemical Company, Tulsa, OK 74102.
Baughman David R.
Bergeson Jerry R.
Occidental Research Corporation
Suchfield George A.
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