(19)
(11) EP 2 020 482 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.04.2011 Bulletin 2011/17

(43) Date of publication A2:
04.02.2009 Bulletin 2009/06

(21) Application number: 08105836.4

(22) Date of filing: 15.05.2002
(51) International Patent Classification (IPC): 
E21B 23/04(2006.01)
E21B 33/04(2006.01)
E21B 43/10(2006.01)
 E21B 23/06(2006.01)
E21B 33/12(2006.01)
(84) Designated Contracting States:
DK FR GB

(30) Priority: 18.05.2001 US 292049 P
31.08.2001 US 316459 P
31.08.2001 US 943854
31.08.2001 US 943701
31.08.2001 US 316572 P
17.10.2001 US 981487
19.10.2001 US 83320
04.12.2001 US 4945
04.12.2001 US 4588
02.05.2002 US 136969
02.05.2002 US 136992

(62) Application number of the earlier application in accordance with Art. 76 EPC:
06012127.4 / 1712729
02736875.2 / 1392953

(71) Applicant: Dril-Quip, Inc.
Houston, Texas 77040 (US)

(72) Inventors:
  • Yokley, John M.
    Kingwood, TX 77339 (US)
  • Reimert, Larry E
    Houston, TX 77024 (US)

(74) Representative: Lockey, Robert Alexander 
Forrester & Boehmert Pettenkoferstrasse 20-22
80336 München
80336 München (DE)

   


(54) Liner Hanger, Running Tool and Method


(57) A tool for use in a subterranean well to seal with a generally cylindrical interior surface of a tubular or another downhole tool, the tool comprising:
a conveyance tubular for positioning the tool at a selected location below the surface of the well;
an annular seal assembly disposed about the conveyance tubular, the seal assembly having a reduced diameter run-in position and an expanded sealing position;
a wedge ring having a substantially conical outer surface configured to radially expand the annual seal assembly upon axial movement of the annular seal assembly relative to the wedge ring such that the seal assembly is expanded from its run-in position to its expanded sealing position wherein the seal assembly is in sealing engagement with the generally cylindrical interior surface; and
the annular seal assembly including a metal framework having a radially inward annular base and a plurality of metal ribs each extending radially outward from the base, the metal framework including an upper downwardly angled primary seal metal rib for sealing pressure below the seal assembly, a lower upwardly angled primary seal metal rib for sealing pressure above the seal assembly, a primary elastomeric seal in a cavity readially outward from the base and axially between the upper primary seal metal rib and the lower primary seal metal rib, an upper downwardly angled secondary seal metal rib spaced axially above the upper primary seal metal rib, and a lower upwardly angled secondary seal metal rib spaced axially below the lower primary seal metal rib.


































Search report