Wells – Processes – Freeing stuck object – grappling or fishing in well
Reexamination Certificate
2006-03-31
2010-02-16
Bagnell, David J (Department: 3676)
Wells
Processes
Freeing stuck object, grappling or fishing in well
C166S178000, C166S098000
Reexamination Certificate
active
07661477
ABSTRACT:
An unsticking assembly for releasing a tool that is stuck in a wellbore including a first anchor actuatable between an engaging position wherein the first anchor engages a wall of the wellbore and a retracted position wherein the first anchor does not engage the wall; a second anchor actuatable between an engaging position wherein the second anchor engages a wall of the wellbore and a retracted position wherein the second anchor does not engage the wall; and a control module in connection with the first and second anchor to selectively actuate each anchor between the engaged and retracted positions. The assembly is adapted for positioning in the wellbore and in connection with the tool when the tool is stuck in the wellbore. The assembly may be a stand-alone assembly that is connectable to the tool after the tool is stuck in the wellbore. The assembly may include the wellbore tool as an interconnected element.
REFERENCES:
patent: 5033549 (1991-07-01), Champeaux
patent: 5115860 (1992-05-01), Champeaux
patent: 5224547 (1993-07-01), Burns
patent: 5228507 (1993-07-01), Obrejanu
patent: 5310001 (1994-05-01), Burns
patent: 5322118 (1994-06-01), Terrell
patent: 5398753 (1995-03-01), Obrejanu
patent: 5575331 (1996-11-01), Terrell
patent: 5592991 (1997-01-01), Lembcke
patent: 5636689 (1997-06-01), Rubbo
patent: 5778980 (1998-07-01), Comeau
patent: 6029744 (2000-02-01), Baird
patent: 6179055 (2001-01-01), Sallwasser et al.
patent: 6196309 (2001-03-01), Estilette
patent: 6868901 (2005-03-01), Mason
patent: 2002/0112859 (2002-08-01), Bloom et al.
patent: 2005/0056427 (2005-03-01), Clemens et al.
patent: 2007/0151732 (2007-07-01), Clemens et al.
Billingham Matthew
Fulin Wayne
Sheiretov Todor K.
Bagnell David J
Castano Jaime
Cate Dave
Harcourt Brad
Schlumberger Technology Corporation
LandOfFree
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