Bore hole underreamer

Details Bore hole underreamer Bore hole underreamer

2005-05-03

2005-05-03

Dang, Hoang (Department: 3672)

Wells

Processes

Distinct, separate injection and producing wells

C166S271000

Reexamination Certificate

active

06886633

ABSTRACT:
Provided is a bore hole underreamer, intended in particular for oil drilling. The underreamer has a hollow body and at least two cylindrical bores. The bores are distributed over the circumference of the hollow body and each bore contains a cylindrical widening arm. Each arm has a bladed cutting end disposed on the outside of the body that slides between active and inactive positions. Another end of each arm is disposed inside the body and receives fluid pressure for pushing the arm into the active position. The underreamer includes a locking member for locking the arms in their inactive position when the locking member is immobilized in the body in a releasable fashion in a locking position. When released, the locking member leaves the locking position under a thrust from at least one of the arms subjected to the pressure capable of pushing the arm into its active position.

REFERENCES:
patent: 336187 (1886-02-01), Wells
patent: 1411484 (1922-04-01), Fullilove
patent: 1485642 (1924-03-01), Stone
patent: 1607662 (1926-11-01), Boynton
patent: 1631449 (1927-06-01), Alford
patent: 1671474 (1928-05-01), Jones
patent: 1686403 (1928-10-01), Boynton
patent: 1772710 (1930-08-01), Denney
patent: 1804850 (1931-05-01), Triplett
patent: 1878260 (1932-09-01), Bunker
patent: 2060352 (1936-11-01), Stokes
patent: 2169502 (1939-08-01), Santiago
patent: 2239996 (1941-04-01), Chappell
patent: 2271472 (1942-01-01), Balduf
patent: 2427052 (1947-09-01), Grant
patent: 2438673 (1948-03-01), McMahan
patent: 2499916 (1950-03-01), Harris
patent: 2710172 (1955-06-01), Kammerer, Jr.
patent: 2754089 (1956-07-01), Kammerer, Jr.
patent: 2758819 (1956-08-01), Kammerer, Jr.
patent: 2809015 (1957-10-01), Phipps
patent: 2822150 (1958-02-01), Muse et al.
patent: 2834578 (1958-05-01), Carr
patent: 2872160 (1959-02-01), Barg
patent: 2882019 (1959-04-01), Carr et al.
patent: 3105562 (1963-10-01), Stone et al.
patent: 3180436 (1965-04-01), Kellner et al.
patent: 3224507 (1965-12-01), Cordary et al.
patent: 3351144 (1967-11-01), Park
patent: 3365010 (1968-01-01), Howell et al.
patent: 3425500 (1969-02-01), Fuchs
patent: 3433313 (1969-03-01), Brown
patent: 3556233 (1971-01-01), Gilreath et al.
patent: 3749184 (1973-07-01), Andeen
patent: 3974886 (1976-08-01), Blake, Jr.
patent: 4055226 (1977-10-01), Weber
patent: 4091883 (1978-05-01), Weber
patent: 4141421 (1979-02-01), Gardner
patent: 4177866 (1979-12-01), Mitchell
patent: 4186810 (1980-02-01), Allan
patent: 4458761 (1984-07-01), Van Vreeswyk
patent: 4503919 (1985-03-01), Suied
patent: 4589504 (1986-05-01), Simpson
patent: 4660657 (1987-04-01), Furse et al.
patent: 4821817 (1989-04-01), Cendre et al.
patent: 4842083 (1989-06-01), Raney
patent: 4889197 (1989-12-01), Boe
patent: 4915181 (1990-04-01), Labrosse
patent: 5036921 (1991-08-01), Pittard et al.
patent: 5060738 (1991-10-01), Pittard et al.
patent: 5086852 (1992-02-01), van Buskirk
patent: 5139098 (1992-08-01), Blake
patent: 5255741 (1993-10-01), Alexander
patent: 5265684 (1993-11-01), Rosenhauch
patent: 5271472 (1993-12-01), Leturno
patent: 5318137 (1994-06-01), Johnson et al.
patent: 5318138 (1994-06-01), Dewey et al.
patent: 5330016 (1994-07-01), Paske et al.
patent: 5332048 (1994-07-01), Underwood et al.
patent: 5348095 (1994-09-01), Worrall et al.
patent: 5368114 (1994-11-01), Tandberg et al.
patent: 5560440 (1996-10-01), Tibbitts
patent: 5590724 (1997-01-01), Verdgikovsky, deceased
patent: 5655609 (1997-08-01), Brown et al.
patent: 5957222 (1999-09-01), Webb et al.
patent: 5957226 (1999-09-01), Holte
patent: 6059051 (2000-05-01), Jewkes et al.
patent: 6070677 (2000-06-01), Johnston, Jr.
patent: 6131675 (2000-10-01), Anderson
patent: 6189631 (2001-02-01), Sheshtawy
patent: 6209665 (2001-04-01), Holte
patent: 6244664 (2001-06-01), Ebner et al.
patent: 6269893 (2001-08-01), Beaton et al.
patent: 6289999 (2001-09-01), Dewey et al.
patent: 6360831 (2002-03-01), Åkesson et al.
patent: 6378632 (2002-04-01), Dewey et al.
patent: 6419025 (2002-07-01), Lohbeck et al.
patent: 6464024 (2002-10-01), Beaton et al.
patent: 20030079913 (2003-05-01), Eppink et al.
patent: 1012545 (2000-12-01), None
patent: 28 39 868 (1979-04-01), None
patent: 0086701 (1983-08-01), None
patent: 0 301 890 (1989-02-01), None
patent: 0 568 292 (1993-11-01), None
patent: 569203 (1924-04-01), None
patent: 0295150 (1928-08-01), None
patent: 540027 (1941-10-01), None
patent: 1586163 (1981-03-01), None
patent: 2 128 657 (1984-05-01), None
patent: 2 180 570 (1987-04-01), None
patent: 8503371 (1987-07-01), None
patent: 0031371 (2000-06-01), None
patent: 02072994 (2002-09-01), None
Notification of Transmittal of International Search Report mailed May 7, 2002 corrresponding to International Application No. PCT/BE02/00031.
UK Search Report for Great Britain Patent Application No.: GB 0323195.8 from Examiner Bob Crowshaw (1 page), Dec. 11, 2003.
International Search Report mailed Jun. 17, 2004 corresponding to International Application No. PCT/BE02/00031, Jun. 17, 2004.

Affiliated with

Also associated with

Rating

Bore hole underreamer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3407201