Concentric expandable reamer and method

Details Concentric expandable reamer and method Concentric expandable reamer and method

2004-05-05

2009-02-24

Chilcot, Jr., Richard E (Department: 3635)

Boring or penetrating the earth

Cutter element laterally shiftable below ground

Plural selectively shiftable cutter elements

C175S269000, C175S273000, C175S279000, C175S286000, C175S291000

Reexamination Certificate

active

07493971

ABSTRACT:
An expandable downhole tool comprises a tubular body, at least one moveable arm disposed within the tubular body and being radially translatable between a retracted position and a wellbore engaging position, and at least one piston operable to mechanically support the at least one moveable arm in the wellbore engaging position when an opposing force is exerted. A method of reaming a formation to form an enlarged borehole in a wellbore comprising disposing an expandable reamer in a retracted position in the wellbore, expanding at least one movable arm of the expandable reamer radially outwardly into engagement with the formation, reaming the formation with the at least one moveable arm to form the enlarged borehole; and mechanically supporting the at least one moveable arm in the radially outward direction during reaming.

REFERENCES:
patent: 3224507 (1965-12-01), Cordary et al.
patent: 3425500 (1969-02-01), Fuchs et al.
patent: 3433313 (1969-03-01), Brown
patent: 3974886 (1976-08-01), Blake, Jr.
patent: 4055226 (1977-10-01), Weber
patent: 4854403 (1989-08-01), Ostertag et al.
patent: 5265675 (1993-11-01), Hearn et al.
patent: 5351758 (1994-10-01), Henderson et al.
patent: 5409059 (1995-04-01), McHardy
patent: 6039131 (2000-03-01), Beaton
patent: 6269893 (2001-08-01), Beaton et al.
patent: 6378632 (2002-04-01), Dewey et al.
patent: 6732817 (2004-05-01), Dewey et al.
patent: 7314099 (2008-01-01), Dewey et al.
patent: 2003/0029644 (2003-02-01), Hoffmaster et al.
patent: 2003/0079913 (2003-05-01), Eppink et al.
patent: 0301890 (1989-02-01), None
patent: 0594420 (1994-04-01), None
patent: 2385344 (2003-08-01), None
patent: WO 00/31371 (2000-06-01), None
patent: WO01/29364 (2001-04-01), None
patent: WO 2004/097163 (2004-11-01), None
International Search Report for GB0410269.5, Aug. 19, 2004, Smith International, Inc.
Examination Report under Section 18(3) for UK Patent No. GB0410269.5, Nov. 8, 2005, 2 pgs.

Affiliated with

Also associated with

Rating

Concentric expandable reamer and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Concentric expandable reamer and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concentric expandable reamer and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4126042