Boring or penetrating the earth – Processes
Reexamination Certificate
2006-11-07
2006-11-07
Tsay, Frank S. (Department: 3672)
Boring or penetrating the earth
Processes
C175S269000
Reexamination Certificate
active
07131504
ABSTRACT:
An apparatus for use in a wellbore. The apparatus includes a body and a blade assembly. The blade assembly is movable between a collapsed position whereby the expandable apparatus has a smaller outer diameter and an expanded position whereby the expandable apparatus has a larger outer diameter. The apparatus further includes a pressure activated member for selectively allowing the blade assembly to move from the closed position to the open position. A method for using the apparatus, wherein a drill string with an expandable bit at the end thereof is lowered into the wellbore. Thereafter, the pressure activated member is activated to allow the cutting members to move from the collapsed position to the expanded position. Subsequently, the expandable bit is rotated to form a portion of the wellbore. Next, the expandable bit is deactivated and the cutting members are moved from the expanded position to the collapsed position.
REFERENCES:
patent: 3406769 (1968-10-01), Kammerer, Jr.
patent: 4081042 (1978-03-01), Johnson et al.
patent: 4565252 (1986-01-01), Campbell et al.
patent: 5141063 (1992-08-01), Quesenbury
patent: 6009961 (2000-01-01), Pietrobelli et al.
patent: 6131675 (2000-10-01), Anderson
patent: 6360831 (2002-03-01), Akesson et al.
patent: 6886633 (2005-05-01), Fanuel et al.
patent: 6920944 (2005-07-01), Eppink et al.
patent: 6953096 (2005-10-01), Gledhill et al.
patent: 2003/0183424 (2003-10-01), Tulloch
patent: 2004/0124011 (2004-07-01), Gledhill et al.
patent: 2004/0211597 (2004-10-01), Cravatte
patent: 2004/0261998 (2004-12-01), Lavaure et al.
patent: 2 454 496 (2004-06-01), None
patent: 1 528 221 (2005-05-01), None
patent: 2 275 067 (1994-08-01), None
patent: 2 294 715 (1996-05-01), None
patent: 2 320 270 (1998-06-01), None
patent: 2 352 747 (2001-02-01), None
patent: 2 396 871 (2004-07-01), None
patent: WO 01/81708 (2001-11-01), None
U.K. Search Report, Application No. GB0518163.1, dated Oct. 19, 2005.
Fuller Mark S.
Gledhill Andrew D.
Odell, II Albert C.
Smalley Michael Tague
Tsay Frank S.
Weatherford / Lamb, Inc.
LandOfFree
Pressure activated release member for an expandable drillbit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure activated release member for an expandable drillbit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure activated release member for an expandable drillbit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3635189