Deep well process for slurry pick-up in hydraulic borehole minin

Details Deep well process for slurry pick-up in hydraulic borehole minin Deep well process for slurry pick-up in hydraulic borehole minin

1983-04-29

1985-07-09

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Processes

Breaking down by direct contact with fluid

175 69, E21C 3712

Patent

active

045278369

ABSTRACT:
A hydraulic borehole mining method and device used to recover subterranean coal, oil shale and other minerals from depths exceeding 1500 ft. where a gas lift is utilized to lift the mined slurry to the surface.

REFERENCES:
patent: 2518591 (1950-08-01), Aston
patent: 3030086 (1962-04-01), Donaldson
patent: 3393013 (1968-07-01), Hammer
patent: 4035023 (1977-07-01), Cockrell

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