DEVICE FOR SECONDARY OPENING OF PRODUCTION RESERVOIRS WITH MECHANICAL TREATMENT Russian patent published in 2009 - IPC E21B43/11 

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production, particularly to devices for secondary opening of production reservoirs with mechanical treatment till boring filtrate penetration depth, slurries and other reservoir contaminating fluids. Device contains void case on logging cable with located inside engine, boring unit, guide lines, washing unit, case fixing in the well mechanism. Bore compiled from consecutive set of bayonet conjugative coupling boxes 15 and equipped wit cutting tool on its working end. Every coupling box 15 equipped from one side with spherical ring belt 18 with lugs 19, and form other side with cylindrical belt 20, inside of which there is cylindrical cavity 11, adequate to spherical belt surface 18. Spherical cavity 21 has "T"-shaped windows 22 from the cavity to outside for logs 19 of spherical ring belt 18 and channel for locking ring 23.

EFFECT: avoid cleaning fluid losses in plug connections, device simplification and possibility to take bore away from treated canal.

5 dwg