DEVICE FOR TREATMENT OF BOTTOM-HOLE FORMATION ZONE OF OIL WELLS Russian patent published in 1999 - IPC

FIELD: oil producing industry; devices for opening of formation, subsequent treatment of bottom-hole formation zone and well cleaning in one operation. SUBSTANCE: device has upper tubular implosive chamber with bleeding holes, geophysical head, fishing device with self-clacking members, plug with ignition unit, jet perforator, lower tubular implosive chamber, geophysical head located in chamber upper part, plug located in chamber lower part and jet perforator. Device is provided with lower tubular implosive chamber, thermal gas generator, fishing devices located between upper tubular implosive chamber and thermal gas generator, flexible joint between plug and jet generator and/or jet perforator and lower tubular implosive chamber made in the form of damper. Plug is made of material which in burning disintegrates with liberation of heat gas. Ratios of diameters of upper and lower tubular implosive chambers and their lengths are within preset limits. EFFECT: higher production rate, provision of recovery and repair of oil wells. 1 dwg