BRINE PRODUCTION METHOD Russian patent published in 2007 - IPC E21B43/28 

FIELD: mining, particularly bore mining of rock, potassium and other salt deposits by salt dissolving.

SUBSTANCE: method involves drilling vertical well in chamber body to be cut; casing the well; providing the well with concentric water-supply, brine-lifting and production strings; injecting pressurized solvent via pipe space defined by water-supply and brine-lifting strings; delivering nonsolvent via pipe space defined by water-supply and production strings; creating developing entry; supplying solvent with inert filler and producing brine via brine-lifting pipe. The inert filler is peat or oat husk taken in amount of 20-50% of solvent volume and having particle dimensions of not more than half of thickness of pipe space between water-supply and brine-lifting strings.

EFFECT: increased intensity of solvent saturation during operational chamber washing-out, increased simplicity and decreased power inputs due to reduced number of saturation cycles.

1 dwg, 1 tbl