Wells – Guide for device or conduit – Surrounding existing device or tubing
Reexamination Certificate
2006-11-28
2006-11-28
Suchfield, George (Department: 3676)
Wells
Guide for device or conduit
Surrounding existing device or tubing
C166S241100, C166S242600
Reexamination Certificate
active
07140432
ABSTRACT:
A dual diameter centralizing sub for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress into grooves between radially outwardly-extending vanes that are spaced around the outer diameter of the sub when compressive force is applied to the bow springs. The vanes extend radially outwardly far enough that the effective diameter of the sub in the area of the vanes is greater than the diameter of the sub and/or the tubing to which it is mounted to provide stand-off even under conditions in which the bow springs are fully compressed while still maintaining fluid flow.
REFERENCES:
patent: 350655 (1886-10-01), Brooder
patent: 1314070 (1919-08-01), Mc Kissick
patent: 1565518 (1925-12-01), Smyser
patent: 1767198 (1930-06-01), Baker
patent: 1775376 (1930-09-01), Steps et al.
patent: 1812945 (1931-07-01), Granger
patent: 1998833 (1935-04-01), Crowell
patent: 2058310 (1936-10-01), Hartman et al.
patent: 2089553 (1937-08-01), Hartman et al.
patent: 2258052 (1941-10-01), Hall
patent: 2311768 (1943-02-01), McCray
patent: 2546582 (1951-03-01), Baker
patent: 2605844 (1952-08-01), Clark, Jr.
patent: 2628682 (1953-02-01), Wright
patent: 2640544 (1953-06-01), Baker
patent: 2665762 (1954-01-01), Althouse, Jr.
patent: 2666241 (1954-01-01), Hall, Sr.
patent: 2718266 (1955-09-01), Berry et al.
patent: 2824613 (1958-02-01), Baker et al.
patent: 2828824 (1958-04-01), Cornstock
patent: 2845128 (1958-07-01), Clark, Jr. et al.
patent: 2898136 (1959-08-01), Hall, Sr. et al.
patent: 2962313 (1960-11-01), Conrad
patent: 2986471 (1961-05-01), Baker
patent: 2998848 (1961-09-01), Wright et al.
patent: 3065005 (1962-11-01), Hall, Sr. et al.
patent: 3072195 (1963-01-01), Kluck
patent: 3128827 (1964-04-01), Kluck
patent: 3172475 (1965-03-01), Moore
patent: 3196951 (1965-07-01), Saurenman
patent: 3196952 (1965-07-01), Solum
patent: 3200884 (1965-08-01), Solum
patent: 3235295 (1966-02-01), Solum
patent: 3237696 (1966-03-01), Hall
patent: 3289768 (1966-12-01), Solum
patent: 3360846 (1968-01-01), Schellstede et al.
patent: 3556042 (1971-01-01), Laughlin
patent: 3578084 (1971-05-01), Bombardieri et al.
patent: 3614139 (1971-10-01), Harrison
patent: 3978924 (1976-09-01), Roesner
patent: 4011907 (1977-03-01), Clay
patent: 4021083 (1977-05-01), Anderson
patent: 4031969 (1977-06-01), Cullen et al.
patent: 4039026 (1977-08-01), Yonker
patent: 4042022 (1977-08-01), Wills et al.
patent: 4077470 (1978-03-01), Dane
patent: 4088186 (1978-05-01), Callihan et al.
patent: 4133470 (1979-01-01), Trail
patent: 4363360 (1982-12-01), Richey
patent: 4520869 (1985-06-01), Svenson
patent: 4523640 (1985-06-01), Wilson et al.
patent: 4531582 (1985-07-01), Muse et al.
patent: 4566317 (1986-01-01), Shakra
patent: 4630690 (1986-12-01), Beasley et al.
patent: 4651823 (1987-03-01), Spikes
patent: 4688636 (1987-08-01), Hennessey
patent: 4739842 (1988-04-01), Kruger et al.
patent: 4787458 (1988-11-01), Langer
patent: 4794986 (1989-01-01), Langer
patent: 4880066 (1989-11-01), Steiginga et al.
patent: 4984633 (1991-01-01), Langer et al.
patent: 4995456 (1991-02-01), Cornette et al.
patent: 5095981 (1992-03-01), Mikolajczyk
patent: 5238062 (1993-08-01), Reinholdt
patent: 5261488 (1993-11-01), Gullet et al.
patent: 5339896 (1994-08-01), Hart et al.
patent: 5575333 (1996-11-01), Lirette et al.
patent: 6032748 (2000-03-01), DeBray et al.
patent: 6209638 (2001-04-01), Mikolajczyk
patent: 6457519 (2002-10-01), Buytaert
patent: 6484803 (2002-11-01), Gremillion
patent: 6679325 (2004-01-01), Buytaert
patent: G 89 03 038.9 (1989-05-01), None
patent: 0143219 (1985-06-01), None
patent: 664905 (1952-01-01), None
patent: 682292 (1952-11-01), None
patent: 682489 (1952-11-01), None
patent: 689807 (1953-04-01), None
patent: 698464 (1953-10-01), None
patent: 2249333 (1992-05-01), None
patent: 2366580 (2002-03-01), None
Patent Litigation:Weatherford International, Inc. and Weatherford/Lamb, Inc., Plaintiffs, v. Casetech International, Inc., Defendant. Civil Action No. H-03-CV-05383, In the United States District Court For the Southern District of Texas, Houston Division. “Claim Construction Memorandum and Order”, Aug. 12, 2005, 10 pages.
Baker, Ron, A Primer of Oilwell Drilling, pp. 119-146, 137 (6thEd. 2001).
Ray Oil Tool Company—The Centralization Specialists—rayoiltool.com—one page product brochure regarding Bi-Centered Float Shoes, Collars & Inline Type Centralizers printed from this website on Sep. 13, 2004, but same material was printed previously from website on Feb. 25, 2003. Date of origin of this material and website is not known.
Patent Litigation:Weatherford International, Inc. and Weatherford/Lamb, Inc., Plaintiffs, v. Casetech International, Inc., Defendant. Civil Action No. H-03-CV-05383, In the United States District Court For the Southern District of Texas, Houston Division.
Information Disclosure Statement filed on Apr. 6, 2006 in Ex Parte Re-exam of Lirette, U.S. Pat. No. 5,575,333 (Control No. 5,575,333 (control No. 9/077,870 (27 pgs).
Halliburton's Patent Opinion on related U.S. Appl. No. 10/302,641 w/exhibits dated May 15, 2006 (62pgs).
Composite Catalog of Oil Field Equipment & Services, 26thRevision, 1964-65, vol. 1, Published by World Oil, p. 460: Baker Model “B” Hammer-Lok Stop Rings. (2 pages).
Kinzel, Holger and Calderoni, Angelo, “Field Test of a Downhole-Activated Centralizer To Reduce Casing Drag”, Society of Petroleum Engineers, 1995 (3 pages).
Kinzel, Holger and Martens, James G., “The Application of New Centralizer Types to Improve Zone Isolation in Horizontal Wells”, SPE 50438, Society of Petroleum Engineers, 1998, pp. 673-682.
CaseTech International, Inc.
Suchfield George
Waggett, P.C. Gordon G.
LandOfFree
Dual diameter and rotating centralizer/sub 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 Dual diameter and rotating centralizer/sub and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual diameter and rotating centralizer/sub and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3637042