DEVICE FOR FIXING EQUIPMENT IN OPERATION COLUMN Russian patent published in 2005 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: device has anchor, reverse rotation drive connected thereto through engagement assembly and hoisting system for supporting drive and anchor. Anchor has hollow shaft with left and right outer threads, upper threaded and lower main bushings with outer cylindrical and slanted surfaces, mated to each other, mounted on the shaft and directed to each other by slanting surfaces. Lower main bushing is placed on the shaft through transfer bushing with inner thread contacting directly to shaft thread, and fixed to the latter by radial shear pins, a set of slips, placed along circle longitudinally to shaft axis. Each slip has inner wedge two-sided and outer cylindrical, with groove and corrugations, surfaces and contacts respectively by one side of inner surface to slanted surface of upper and lower main bushings, guiding bushing placed coaxially to shaft on outer cylindrical surfaces of upper and lower main bushings, provided in middle portion by ring belt of radial rectangular ports, wherein with possible radial displacement slips are placed, and on the sides - by stopping assemblies of main bushings, from round rotation. Hoisting support system for drive and anchor is made with flexible connection element, anchor additionally including localizer and prior fixing assembly in operation column, slips stopping assembly in transporting position, rotation drive is made submersible, provided with output shaft and flange on body, engagement assembly has two engaging mechanical sleeve, first sleeve, consisting of two half-couplings, one of which is made on free end portion of drive output shaft, and another one - in inner portion of anchor hollow shaft, connected by axial displacement, to holding means, rotating with sleeve and acting via mutually engaging elements, and second sleeve, containing two half-couplings, connected by axial displacement, made on upper main bushing of anchor on the side of drive, and on flange of drive body.

EFFECT: higher reliability.

11 cl, 5 dwg