METHOD FOR TREATMENT OF WELL-ADJACENT BED ZONE Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: method includes forming of periodical pressure pulses in well-adjacent bed zone in form of fading standing wave, above latch of well a high pressure cylinder with piston is mounted. Above said cylinder a low pressure cylinder is placed coaxially, with piston, connected to high pressure cylinder piston. Cylinders from hydraulic multiplier. Periodical pulses of pressure in well-adjacent zone for forming a fading standing wave are formed by impact against surface of well liquid by charge of compressed gas through hydraulic multiplier. For this compressed gas is ed to low pressure cylinder through branch pipe below piston. Pressure of compressed gas feeding is less for vale of relation of square cylinder diameters. Fading standing wave moves along well hollow and form repression-depression pulses. During displacement of liquid along well from well-adjacent bed zone to day surface pressure is dropped.

EFFECT: higher safety, higher efficiency.

1 dwg, 1 ex