Tubing injector for variable diameter tubing

Details Tubing injector for variable diameter tubing Tubing injector for variable diameter tubing

2006-10-24

2006-10-24

Neuder, William (Department: 3672)

Wells

Above ground apparatus

Moving tubing or cable into an existing well

C226S177000, C091S048000

Reexamination Certificate

active

07124815

ABSTRACT:
A tubing injector apparatus for use with variable diameter tubing. The apparatus comprises a pair of carriages which may be moved transversely and pivotally with respect to one another by actuating hydraulic actuator cylinders. A hydraulic control system uses relief valves to maintain a substantially constant pressure in the actuator cylinders when a tapered connector in the tubing passes between the carriages. A gripper chain in each carriage has gripper blocks to grippingly engage the tubing. A linear beam supports the gripper chain and has a plurality of resiliently biased segments therein to help maintain better contact with the tubing when the tapered connector passes through.

REFERENCES:
patent: 5553668 (1996-09-01), Council et al.
patent: 5596823 (1997-01-01), Clasen et al.
patent: 5853118 (1998-12-01), Avakov
patent: 6209634 (2001-04-01), Avakov et al.
patent: 6367557 (2002-04-01), Rosine et al.
patent: 2005/0247455 (2005-11-01), Domann
patent: 2387342 (2003-10-01), None

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