METHOD FOR OBTAINING AND USING PRODUCTS OF HYDRAULIC BOREHOLE MINING, AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC E21B43/34 B03B7/00 

FIELD: oil and gas industry.

SUBSTANCE: method for obtaining and using products of hydraulic borehole mining involves drilling of production wells, water jet destruction of mine rock massif in the mineral deposit, hydraulic lifting along the well to the day surface of mine rock material, hydraulic transportation of mine rock material and its output in the form of a vertical fan-like pulp flow to the depositing site, catching from the pulp flow of a heavy ore-containing fraction, drainage of a hydraulic mixture of sand and clay via a drain channel to a sediment pond, clarification of water in the sediment pond, return of clarified water to a return water supply diagram of production wells. After gravitational separation on the depositing site of fractions of mine rocks, a turbulent flow of hydraulic mixture of sand and clay along spiral trajectory from the drain part of the depositing site is supplied by gravity tangentially to a hydraulic cyclone, where sand is deposited in an accumulating sump, where from it is pumped out by a pump. Water-clay mixture is supplied by gravity to a coagulation capacity, where accelerated deposition of clay into the accumulating sump takes place under action of gravitational forces, physical field and chemical reagent, where from it is pumped out by the pump. Clarified water is supplied by gravity to the return water supply diagram of production wells. Separated sand fraction is supplied to working face of production wells as an abrasive component of the jet and used for strengthening and disintegration of hard mine rocks. Separated clay fraction is used during drilling of production wells containing drilling and plugging compounds. The method is implemented by means of a device comprising a production well, a transport pulp line, a depositing site, a catcher of heavy ore-containing fraction, a transport system of water jet mixture of sand and clay. It includes a hydraulic cyclone and a coagulation capacity, which are made in the ground, near the lateral side of the depositing site. Wall of end face side of the drain part of the depositing site is made in the form of an opening branch of a spiral, the centre of which coincides with hydraulic cyclone centre.

EFFECT: improving efficiency of primary benefication of minerals on a production field at hydraulic borehole mining.

8 cl, 4 dwg