LOCKING DEVICE FOR FASTENING OF TOOLING ON FIBERGLASS CASING PIPE Russian patent published in 2021 - IPC E21B17/10 E21B19/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, in particular, to devices for fastening of external equipment on fiberglass casing pipes lowered into well. Locking device for attachment of process accessories on fiberglass casing comprises coupling with inner annular groove, note here that coupling is made up of two semi-rings forming detachable ring and interconnected by axle on one side and locking lock on opposite side. In internal annular groove there are consistently installed four steel sectors with rubber coating, on the surface of which on the inner side there is a fine abrasive material or emery tape with a large abrasive crumb on a fabric base and which are fixed on the surface of the detachable ring every 45° by pressure bolts. At that, the maximum external diameter of the locking device taking into account the axis fixing the lock and the pressure bolts in the working position does not exceed values of the external diameter of the casing pipe coupling.

EFFECT: reliable and gentle fixation of locking device on fiberglass pipe.

1 cl, 3 dwg