Apparatus and methods for drilling wellbores that utilize a...

Details Apparatus and methods for drilling wellbores that utilize a... Apparatus and methods for drilling wellbores that utilize a...

2008-08-28

2011-11-15

Gay, Jennifer H (Department: 3676)

Boring or penetrating the earth

Processes

Boring curved or redirected bores

C175S171000, C175S257000, C175S386000

Reexamination Certificate

active

08056649

ABSTRACT:
An apparatus for use in a wellbore is provided that in one aspect includes: a drilling assembly configured to carry a first drill bit at an end thereof, a second drill bit disposed uphole of the first drill bit, and a connection device that is configured to selectively connect the second drill bit to the drilling assembly and disconnect the second drill bit from the drilling assembly.

REFERENCES:
patent: 3131778 (1964-05-01), Emerson et al.
patent: 5472057 (1995-12-01), Winfree
patent: 5662182 (1997-09-01), McLeod et al.
patent: 5845722 (1998-12-01), Makohl et al.
patent: 6106200 (2000-08-01), Mocivnik et al.
patent: 6196336 (2001-03-01), Fincher et al.
patent: 6626244 (2003-09-01), Powers
patent: 7416036 (2008-08-01), Forstner et al.
patent: 7520343 (2009-04-01), Hughes et al.
patent: 2002/0007970 (2002-01-01), Terry et al.
patent: 2002/0066598 (2002-06-01), Rozendaal et al.
patent: 2003/0047317 (2003-03-01), Powers
patent: 2004/0256157 (2004-12-01), Tessari et al.
patent: 2005/0236187 (2005-10-01), Chen et al.
patent: 2006/0237234 (2006-10-01), Dennis et al.
patent: 2007/0034412 (2007-02-01), Forstner et al.
patent: 2009/0266614 (2009-10-01), Meister
patent: 215051 (1924-05-01), None
patent: 2356417 (2001-05-01), None
patent: 2004104360 (2004-02-01), None

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