Variable size coil tubing gripping elements

Details Variable size coil tubing gripping elements Variable size coil tubing gripping elements

2007-09-18

2007-09-18

Bagnell, David (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S086300

Reexamination Certificate

active

10908410

ABSTRACT:
A variable ram for coiled tubing comprises a pair of opposing rams, each ram having a ram body with a vertical channel formed therein; a pair of opposing pins within each ram head, the pins extending into the channel; and a toothed gripper having a hole therein sized to mount over its respective pin.

REFERENCES:
patent: 3897038 (1975-07-01), LeRouax
patent: 3915426 (1975-10-01), LeRouax
patent: 4229012 (1980-10-01), Williams, III
patent: 5005802 (1991-04-01), McWhorter et al.
patent: 5009289 (1991-04-01), Nance
patent: 5251870 (1993-10-01), Ward
patent: 5309990 (1994-05-01), Lance
patent: 5575451 (1996-11-01), Colvin et al.
patent: 6089526 (2000-07-01), Olson
patent: 6367804 (2002-04-01), Watts
patent: 6543546 (2003-04-01), Kaiser

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