Wells – Guide for device or conduit – Surrounding existing device or tubing
Reexamination Certificate
2006-08-29
2006-08-29
Thompson, Kenneth (Department: 3672)
Wells
Guide for device or conduit
Surrounding existing device or tubing
C175S325700, C166S242400
Reexamination Certificate
active
07096940
ABSTRACT:
A centralizer system is provided for use in a marine riser system with an insulated pipe, which may be a titanium stress joint. The centralizer system utilizes one or more centralizers mounted such that insulation material is provided in an annulus between the one or more centralizers and the stress joint. A clamp is utilized to axially affix either one centralizer or multiple centralizers to the stress joint. The clamp is comprised of a plurality of sections with cylindrical interior surfaces which are tightened together using fasteners. The cylindrical interior surfaces avoid damage to the insulation layer which may be elastomeric. The clamp and each centralizer have radially directed projections thereon which interlock the clamp with each centralizer. Because the clamp is axially affixed, the centralizer is then also axially affixed. In one embodiment, the centralizer is axially moveable to a desired axial position prior to being interlocked to the tightened clamp.
REFERENCES:
patent: 3623968 (1971-11-01), Bohne
patent: 3697141 (1972-10-01), Garrett
patent: 3990478 (1976-11-01), McFarland
patent: 4185694 (1980-01-01), Horton
patent: 4633801 (1987-01-01), Marshall
patent: 5336020 (1994-08-01), Askestad
patent: 5803193 (1998-09-01), Krueger et al.
patent: 5806615 (1998-09-01), Appleton
patent: 5873677 (1999-02-01), Davies et al.
patent: 5901798 (1999-05-01), Herrera et al.
patent: 6032748 (2000-03-01), DeBray et al.
patent: 6305723 (2001-10-01), Schutz et al.
patent: 6422316 (2002-07-01), Schutz et al.
patent: 6422791 (2002-07-01), Pallini, Jr. et al.
patent: 6467545 (2002-10-01), Venkataraman et al.
patent: 2002/0084077 (2002-07-01), Finn et al.
patent: 2003/0021634 (2003-01-01), Munk et al.
Spar Global Responses, Prepared for OGP Workshop—The Metocean and Engineering Technology Requirements for Floating Systems—Apr. 23, 2001, John Halkyard, CSO Aker Engineering, Inc., The Coflexip Stena Offshore Group.
Avery Roy Daniel
Baxter Carl F. G.
Beard Michael
Caldwell Christopher S.
Dyer Brent L.
Browning & Bushman P.C.
Bushman C. James
RTI Energy Systems, Inc.
Thompson Kenneth
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