(19)
(11) EP 2 785 963 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
24.03.2021 Bulletin 2021/12

(45) Mention of the grant of the patent:
16.12.2020 Bulletin 2020/51

(21) Application number: 12853978.0

(22) Date of filing: 29.10.2012
(51) International Patent Classification (IPC): 
E21B 33/10(2006.01)
E21B 23/06(2006.01)
E21B 23/04(2006.01)
 E21B 33/12(2006.01)
E21B 43/04(2006.01)
(86) International application number:
PCT/US2012/062356
(87) International publication number:
WO 2013/081753 (06.06.2013 Gazette 2013/23)

(54)

SELECTIVELY DISENGAGABLE SEALING SYSTEM

SELEKTIV LÖSBARES DICHTUNGSSYSTEM

SYSTÈME D'ÉTANCHÉITÉ POUVANT ÊTRE DÉSENGAGÉ DE FAÇON SÉLECTIVE

(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: 01.12.2011 US 201113308760

(43) Date of publication of application:
08.10.2014 Bulletin 2014/41

(73) Proprietor: Baker Hughes Holdings LLC
Houston, TX 77073 (US)

(72) Inventors:
  • ALLEN, Jason A.
    Houston Texas 77084 (US)
  • CLEM, Nicholas J.
    Houston Texas 77092 (US)
  • O'BRIEN, Robert S.
    Katy Texas 77494 (US)
  • HAMMER, Aaron C.
    Houston Texas 77008 (US)

(74) Representative: BRP Renaud & Partner mbB Rechtsanwälte Patentanwälte Steuerberater 
Königstraße 28
70173 Stuttgart
70173 Stuttgart (DE)


(56) References cited: : 
WO-A1-2005/088064
US-A- 5 775 429
US-A1- 2003 217 844
US-A1- 2011 147 013
 GB-A- 2 419 904
US-A- 6 056 061
US-A1- 2007 084 605
US-B2- 7 490 669
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).