DEVICE FOR HYDRAULIC-IMPACT TREATMENT OF BED Russian patent published in 1998 - IPC

FIELD: oil production industry. SUBSTANCE: device has pipes connected together into string, packer, adapter with dividing piston which divides axial passage into upper chamber and lower chamber, pulsing valve located above adapter and relieving valve located below adapter. Lower chamber is filled with liquid which is pressure-forced into bed. Poured into upper chamber is detonating liquid. Flow of liquid from well is directed into lower chamber. Detonating liquid is compressed by means of dividing piston. Vapor of detonating liquid is ignited. Due to action of pressure pulse, liquid from lower chamber is pressure-forced into bed. Multiple repeating of aforesaid bed treating process yields efficient results. EFFECT: higher efficiency. 4 cl, 3 dwg