Method of solution mining salts from an underground salt...

Details Method of solution mining salts from an underground salt... Method of solution mining salts from an underground salt...

E - Fixed Constructions

21

B

166/30

E21B 43/28 (2006.01)

Patent

CA 1132899

A B S T R A C T METHOD OF SOLUTION MINING SALTS FROM AN UNDERGROUND SALT DEPOSIT Salts from a salt deposit including magnesium and potassium salts are mined by a solution process in a cavity at the lower end of a borehole. A solvent liquid (water) is injected into the cavity at a level that is periodically raised whereby super imposed slices or cuts of the part of the deposit around the borehole are consecutively dissolved. Brine is recovered from a low level in the cavity. The injection rate of the solvent liquid and the recovery rate of the brine are controlled such that the vertical distribution of the potassium content of the brine in the cavity shows a maximum within the uppermost slice or cut.

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