(19)
(11) EP 2 556 210 A1

(12)

(43) Date of publication:
13.02.2013 Bulletin 2013/07

(21) Application number: 11766725.3

(22) Date of filing: 07.04.2011
(51) International Patent Classification (IPC): 
E21B 43/24(2006.01)
(86) International application number:
PCT/US2011/031570
(87) International publication number:
WO 2011/127275 (13.10.2011 Gazette 2011/41)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 09.04.2010 US 322664 P

(71) Applicants:
  • Shell Oil Company
    Houston, TX 77252-2463 (US)

    SM 
  • Shell Internationale Research Maatschappij B.V.
    2596 HR The Hague (NL)

(72) Inventors:
  • REMEY, Edward Everett de St.
    Katy Texas 77494 (US)
  • GIULIANI, Valerio
    Calgary Alberta T2MON5 (CA)
  • HARRIS, Christopher Kelvin
    Calgary Alberta T3A03 (CA)

(74) Representative: Matthezing, Robert Maarten 
Shell International B.V. Intellectual Property Services P.O. Box 384
2501 CJ The Hague
2501 CJ The Hague (NL)

   


(54) INSULATED CONDUCTOR HEATERS WITH SEMICONDUCTOR LAYERS