Coil tubing injector unit

Details Coil tubing injector unit Coil tubing injector unit

1991-05-23

1992-07-28

Bui, Thuy M.

Wells

Above ground apparatus

Moving tubing or cable into an existing well

166 85, E21B 1922

Patent

active

051334054

ABSTRACT:
A coil tubing injector unit is shown for injecting tubing into a well bore. A main injector frame is positioned adjacent the well bore and includes a longitudinal opening which defines a vertical run for the injector unit which is alignable with the well bore vertical axis. Gripper block assemblies are carried on the main injector frame and include plier-like halves which are pivotable between an open position and a closed, gripping position as the assemblies enter the vertical run so that the plier halves grip a selected length of tubing fed into the main injector frame along the central vertical axis of the injector unit to inject the tubing into the well bore. A drive mechanism including a chain drive located on the main injector frame drives the gripper block assemblies in a continuous loop within the main injector frame.

REFERENCES:
patent: 3116793 (1964-01-01), McStravick
patent: 3285485 (1966-11-01), Slator
patent: 3363880 (1968-01-01), Blagg
patent: 3559905 (1971-02-01), Polynchuk
patent: 4585061 (1986-04-01), Lyons et al.
patent: 4655291 (1987-04-01), Cox
patent: 4673035 (1987-06-01), Gipson
patent: 4974686 (1990-12-01), Hisey et al.
patent: 5002130 (1991-03-01), Laky

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