Wells – Processes – Placing or shifting well part
Reexamination Certificate
2005-12-27
2005-12-27
Walker, Zakiya (Department: 3676)
Wells
Processes
Placing or shifting well part
C166S222000, C166S319000
Reexamination Certificate
active
06978841
ABSTRACT:
A simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.
REFERENCES:
patent: 2797755 (1957-07-01), Bobo
patent: 3023810 (1962-03-01), Anderson
patent: 3446283 (1969-05-01), Baumstimier
patent: 4276931 (1981-07-01), Murray
patent: 4505341 (1985-03-01), Moody et al.
patent: 4711299 (1987-12-01), Caldwell et al.
patent: 5055002 (1991-10-01), Roeder
patent: 5088842 (1992-02-01), Ito et al.
patent: 5095976 (1992-03-01), Appleton
patent: 5176208 (1993-01-01), Lalande et al.
patent: 5280825 (1994-01-01), Cholet
patent: 5372190 (1994-12-01), Coleman
patent: 5562161 (1996-10-01), Hisaw et al.
patent: 5775433 (1998-07-01), Hammett et al.
patent: 5785124 (1998-07-01), Hisaw et al.
patent: 5806599 (1998-09-01), Hisaw et al.
patent: 5944100 (1999-08-01), Hipp
patent: 6158512 (2000-12-01), Unsgaard
patent: 6427776 (2002-08-01), Hoffman et al.
patent: WO 99/09291 (1999-02-01), None
patent: WO 99/22116 (1999-05-01), None
EP Partial Search Report, EP Application No. EP 04 10 5606, dated Dec. 23, 2004.
Giroux Richard Lee
Hoffman Corey E.
Luke Mike A.
Norris Stephen J.
Patterson & Sheridan LLP
Walker Zakiya
Weatherford / Lamb, Inc.
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