Lixiviant recirculator for in situ mining

Details Lixiviant recirculator for in situ mining Lixiviant recirculator for in situ mining

1976-10-28

1978-03-21

Purser, Ernest R.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Input and output wells

166115, 166222, 166106, E21B 4328

Patent

active

040799980

ABSTRACT:
A downhole recirculator for injecting two-phase lixiviant from a tubing string into a leaching interval of an in situ mine field injection hole, and for circulating the injected lixiviant within the leaching interval. The recirculator includes a core device which is adapted to be readily inserted or removed from its operating position in a fixture defining the upper limit of the leaching interval. The core device includes an induction valve arrangement whereby a primary flow of two-phase lixiviant supplied from the minefield surface by way of the tubing string induces a secondary flow of lixiviant from regions of the injection hole near the top of the leaching interval. The primary flow two-phase lixiviant is combined with the secondary flow lixiviant and injected to a region near the bottom of the leaching interval to establish a circulatory motion of lixiviant within the leaching interval.

REFERENCES:
patent: 1448818 (1973-03-01), Stokes
patent: 2703145 (1955-03-01), Hildebrandt
patent: 2946565 (1960-07-01), Williams
patent: 3958641 (1976-05-01), Dill et al.

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