BOTTOM-HOLE ZONE TREATMENT METHOD Russian patent published in 2000 - IPC

FIELD: jet facilities. SUBSTANCE: proposed method includes delivery of working medium into nozzle of jet device, pumping of liquid medium by this device and pre-pumping out hydraulic impulse treatment of bottom-hole zone. During hydraulic impulse treatment, appearance of colmatage particle on surface together with working agent is detected, after which treatment is stopped. Hydraulic impulse treatment device is installed 2-5 m higher than upper level of perforation interval. Control valve is installed in jet device. Packer is set in position at delivery of working liquid medium or by turning oil well tubing mechanically. Jet device nozzle input is placed in communication with tubing above control valve action of working medium pressure by means of control valve, and intake chamber of jet device is connected with tubing below control valve. By delivering working medium into jet device nozzle, liquid medium with colmatage particles is pumped out to surface. Continuous pumping out is alternated with cyclic depression at maximum value of 3-25 Mpa. EFFECT: intensified usage of equipment. 1 dwg