ELEVATOR APPARATUS FOR GLASS-REINFORCED PLASTIC TUBING Russian patent published in 2008 - IPC E21B19/06 

FIELD: fixed constructions; apparatus for servicing and exploitation of oil, pressure and gas wells.

SUBSTANCE: elevator apparatus for glass-reinforced plastic tubing with female and pin ends comprises sleeve housing with a lifting eye, retrievable grip having jaw halves articulated to the end of a retractable rod and allowing to open said jaws being positioned outside the sleeve housing and to close them being positioned inside the latter, locking device comprising a turning handle wherein a spring-loaded lock and a lever are mounted. The turning handle is rigidly connected to the sleeve that is mounted so that to allow the retractable rod being fixed therein. The free ends of the jaw halves are lap-mated and jointed by means of a taper precision pin being fixed with the spring-loaded lock that is attached to one of the jaw halves. The inner bearing surface of the jaw halves mates the profile of the female tube end. The outer surface mates the inner bore of the sleeve housing with a radial space left to ensure releasing the elevator from tubing when the tapered precision pin is taken off.

EFFECT: speeding up the tripping process.

5 dwg