DEVICE FOR TREATMENT OF BOTTOM-HOLE ZONE OF WELL BY IMPLOSION METHOD Russian patent published in 2016 - IPC E21B43/18 E21B34/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular to devices for treatment of bottom-hole zones of wells. Device for treatment of bottom-hole zones of well by implosion method includes housing with upper and lower rows of radial channels, arranged in the lower housing step piston with an axial channel and upper spring-loaded piston with an axial channel, ball valve with seats installed between the lower step and upper spring-loaded pistons and having the possibility of closing the axial channel of the upper piston. In the ball valve is made a central channel, in which rod is rigidly mounted. Lower end of the rod is arranged in axial channel of lower step of the piston and is passed through the lower centralizer, rigidly fixed in axial channel of lower step piston. Upper end of the rod is arranged in the axial channel of the upper spring-loaded piston and is passed through the upper centralizer, rigidly fixed in axial channel of the upper spring-loaded piston. Upper spring-loaded piston and bottom step piston have the possibility of restricted axial movement in housing with centering relative to the ball valve with rod. At the upper end of the lower step of the piston and on the lower end of the top spring-loaded piston valve seats are made in the form of cylindrical samples.

EFFECT: proposed device for treatment of bottom-hole zone by implosion method allows to increase quality of implosion treatment of bottom-hole zone of well; to increase operation reliability in inclined and horizontal wells.

1 cl, 2 dwg