Apparatus and method for injecting tubing in a well bore

Details Apparatus and method for injecting tubing in a well bore Apparatus and method for injecting tubing in a well bore

2006-08-15

2006-08-15

Bagnell, David (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S077300

Reexamination Certificate

active

07090026

ABSTRACT:
An apparatus and method for moving a tubing along a path, according to which the tubing is engaged by an outer chain which is driven to advance the tubing. The chain is adapted to be deflected radially in response to an increase in the diameter of the tubing, and a plate is compressed in response to the deflection of the chain to accommodate the variation in diameter.

REFERENCES:
patent: 3841407 (1974-10-01), Bozeman
patent: 5309990 (1994-05-01), Lance
patent: 6173769 (2001-01-01), Goode
patent: 6216780 (2001-04-01), Goode et al.
patent: 6367557 (2002-04-01), Rosine et al.
patent: 6892810 (2005-05-01), Austbo et al.
patent: 2003/0209346 (2003-11-01), Austbo et al.
Patent Application entitled “Hydraulic Circuit And Method For Operating A Gripping Device” by Robert E. Domann, filed concurrently herewith.

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