METHOD FOR TREATING WELL-PROXIMATE LAYER AREA Russian patent published in 2004 - IPC

FIELD: mining industry. SUBSTANCE: method includes equipping well with a T-pipe with quick-opening valves. T-pipe is connected to a tank through a valve. Previously all air is pumped out of the tank for creating limited vacuum volume. One of said valves has access to atmosphere. Well is connected to fluid container through a T-pipe with valves. Previously fluid is pumped into the well. When fluid moves in the well shaft from well-proximate layer area towards day surface, pressure is scoured while well hollow is abruptly opened. A valve is opened, through which well fluid under pressure fills the tank. Fluid hits inner tank wall and is reflected from it while creating pressure impulses in well-proximate layer area in form of damped standing wave, which creates repression-depression impulses. Depression pressure overfall is formed between well-proximate layer area and well hollow. During period of depression half-wave growth waste is removed from the well by means of pumping fluid into container. EFFECT: possible restoration of well operation for wells without tubing string by means of pump and hoisting equipment. 1 dwg