Gripper assembly for downhole tools

Details Gripper assembly for downhole tools Gripper assembly for downhole tools

2007-10-02

2007-10-02

Dang, Hoang (Department: 3672)

Wells

Expansible anchor or casing

Expansible means translated by wedge or cam

C175S050000, C175S212000, C175S099000, C175S230000

Reexamination Certificate

active

11418449

ABSTRACT:
A gripper assembly for anchoring a tool within a downhole passage and for possibly assisting movement of the tool within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the passage. The toes are displaced by the interaction of a driver slidable on the mandrel and a driver interaction element on the toes. In one embodiment, the toes are displaced by the interaction of rollers and ramps that are longitudinally movable with respect to one another. In another embodiment, the toes are displaced by the interaction of toggles that rotate with respect to the toes.

REFERENCES:
patent: 2167194 (1939-07-01), Anderson
patent: 2271005 (1942-01-01), Grebe
patent: 2569457 (1951-10-01), Dale et al.
patent: 2946565 (1960-07-01), Williams
patent: 2946578 (1960-07-01), De Smaele
patent: 3138214 (1964-06-01), Bridwell
patent: 3180436 (1965-04-01), Kellner et al.
patent: 3180437 (1965-04-01), Kellner et al.
patent: 3185225 (1965-05-01), Ginies
patent: 3224734 (1965-12-01), Hill
patent: 3225843 (1965-12-01), Ortloff et al.
patent: 3376942 (1968-04-01), Van Winkle
patent: 3497019 (1970-02-01), Ortloff
patent: 3599712 (1971-08-01), Magill
patent: 3606924 (1971-09-01), Malone
patent: 3661205 (1972-05-01), Belorgey
patent: 3664416 (1972-05-01), Nicolas et al.
patent: 3797589 (1974-03-01), Kellner et al.
patent: RE28449 (1975-06-01), Edmond
patent: 3941190 (1976-03-01), Conover
patent: 3978930 (1976-09-01), Schroeder
patent: 4085808 (1978-04-01), Kling
patent: 4095655 (1978-06-01), Still
patent: 4141414 (1979-02-01), Johansson
patent: 4314615 (1982-02-01), Sodder, Jr. et al.
patent: 4365676 (1982-12-01), Boyadjieff et al.
patent: 4372161 (1983-02-01), de Buda et al.
patent: 4463814 (1984-08-01), Horstmeyer et al.
patent: 4558751 (1985-12-01), Huffaker
patent: 4573537 (1986-03-01), Hirasuma et al.
patent: 4615401 (1986-10-01), Garrett
patent: 4674914 (1987-06-01), Wayman et al.
patent: 4686653 (1987-08-01), Staron et al.
patent: 4811785 (1989-03-01), Weber
patent: 4821817 (1989-04-01), Cendre et al.
patent: 4951760 (1990-08-01), Cendre et al.
patent: 5010965 (1991-04-01), Schmelzer
patent: 5184676 (1993-02-01), Graham et al.
patent: 5186264 (1993-02-01), du Chaffaut
patent: 5310012 (1994-05-01), Cendre et al.
patent: 5363929 (1994-11-01), Williams et al.
patent: 5425429 (1995-06-01), Thompson
patent: 5467832 (1995-11-01), Orban et al.
patent: 5613568 (1997-03-01), Sterner et al.
patent: 5752572 (1998-05-01), Baiden et al.
patent: 5758731 (1998-06-01), Zollinger
patent: 5758732 (1998-06-01), Liw
patent: 5765640 (1998-06-01), Milne et al.
patent: 5794703 (1998-08-01), Newman et al.
patent: 5803193 (1998-09-01), Krueger et al.
patent: 6003606 (1999-12-01), Moore et al.
patent: 6026911 (2000-02-01), Angle et al.
patent: 6031371 (2000-02-01), Smart
patent: 6089323 (2000-07-01), Newman et al.
patent: 6112809 (2000-09-01), Angle
patent: 6464003 (2002-10-01), Bloom et al.
patent: 6640894 (2003-11-01), Bloom et al.
patent: 6715559 (2004-04-01), Bloom et al.
patent: 7048047 (2006-05-01), Bloom et al.
patent: 0 257 744 (1995-01-01), None
patent: 0 767 289 (1997-04-01), None
patent: 2 310 871 (1997-09-01), None
patent: 2 346 908 (2000-08-01), None
patent: WO 92/13226 (1992-08-01), None
patent: WO 95/21987 (1995-08-01), None
patent: WO 00/36266 (2000-06-01), None
U.S. Appl. No. 60/201,353, and cover sheet, filed May 2, 2000 entitled “Borehole Retention Device” in 24 pages.

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