METHOD OF BOREHOLE HYDRAULIC MINING OF MINERALS AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC E21C45/00 E21C41/16 

FIELD: mining.

SUBSTANCE: group of inventions that can be used in development of solid minerals using the method of borehole hydraulic mining, in construction business for construction of underground storage facilities in sedimentary rocks through boreholes for storing liquid and gaseous products and for industrial waste disposal. The method of downhole hydroextraction of minerals includes drilling rows of technological wells, successive installation of a borehole tool with a hydraulic jet shaft in a vertical position, mining a landfill with rows of planarly round underground chambers. Testing of the landfill is carried out by washing out the hemispherical sector when the jet shaft with side nozzles is brought out through the rod, the hinge is moved from the vertical to the horizontal position and the productive formation is washed out during the circular rotation of the borehole tool with flushing of the destroyed rocks to the technological well and their airlift rise to the surface for enrichment and storage. Testing of the landfill is carried out in backwards rows of underground chambers and in backwards order of rows of underground chambers. The erosion of the underground chamber starts from the side of the spent part of the landfill. When tensioning one of the cables with the help of one of the winches, the jet shaft is rotated around the axis so that the side nozzles are in a horizontal plane. The device for downhole hydraulic production is a downhole tool. The downhole tool consists of air, water and pulp pipes. At the lower end of the water pipe, a hinged elbow and a jet shaft with side nozzles are installed. Side nozzles are positioned in the same plane and directed at an angle of 30° to the axis of the jet shaft towards the hinged elbow. At the end of the jet shaft on the side opposite to the side nozzles, a deflecting nozzle is installed at an angle of 90° to the axis of the jet shaft. A spring-loaded valve is installed in front of the deflecting nozzle inside the jetting shaft, connected by a cable passing through the side nozzle and the pulp pipe, with a winch in the upper part of the pulp pipe. A jet nozzle is installed in front of the side nozzle at the far end of the jetting shaft. The jet nozzle is located in the plane of the other side nozzles and is directed in the opposite direction from the hinged elbow at an angle of 30° to the axis of the jet shaft. The articulated elbow is connected to the branch pipe, on which the jetting shaft is installed with the possibility of axial rotation. The jetting shaft has a transverse groove for the possibility of axial rotation of the jetting shaft at an angle of 90-180°, through which a screw is installed in the nozzle. At the end of the jet shaft, a cable is fixed, connected to two winches in the upper part of the pulp pipe.

EFFECT: increased efficiency of downhole hydraulic mining of minerals and remoteness when controlling the operation of the device.

5 cl, 6 dwg