Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector
Reexamination Certificate
2008-09-05
2010-11-30
Bagnell, David J (Department: 3676)
Wells
Conduit wall or specific conduit end structure
Downhole coupling or connector
C175S257000, C175S322000
Reexamination Certificate
active
07841400
ABSTRACT:
Drill bits are enable the use of tools in a wellbore when it is undesirable or impossible to remove the drill bit. Drill bits include a drill bit insert, a latch assembly, a housing, a running tool, and a shaft trigger to operate the latch assembly.
REFERENCES:
patent: 2153815 (1939-04-01), Snyder
patent: 2173677 (1939-09-01), Boyd
patent: 2719363 (1955-10-01), Montgomery et al.
patent: 2726848 (1955-12-01), Montgomery et al.
patent: 2829868 (1958-04-01), Pickard et al.
patent: 3127943 (1964-04-01), Mori
patent: 3169592 (1965-02-01), Kammerer
patent: 3241624 (1966-03-01), Rassieur
patent: 3409081 (1968-11-01), Brown
patent: 5472057 (1995-12-01), Winfree
patent: 5568838 (1996-10-01), Struthers et al.
patent: 6059053 (2000-05-01), McLeod
patent: 6206114 (2001-03-01), McLeod
patent: 6269891 (2001-08-01), Runia
patent: 7134493 (2006-11-01), Runia
patent: 7188672 (2007-03-01), Berkheimer et al.
patent: 7287609 (2007-10-01), Runia et al.
patent: 7296639 (2007-11-01), Millar et al.
patent: 2008/0173481 (2008-07-01), Menezes et al.
PCT/US2009/056039 International Search Report and Written Opinion, Feb. 23, 2010.
Macrae Jon
Wells Peter
Bagnell David J
Conley & Rose, P.C.
Michener Blake
Thrubit B.V.
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