(19)
(11) EP 2 744 971 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:
18.04.2018 Bulletin 2018/16

(45) Mention of the grant of the patent:
21.02.2018 Bulletin 2018/08

(21) Application number: 12823332.7

(22) Date of filing: 10.08.2012
(51) International Patent Classification (IPC): 
E21B 23/08(2006.01)
E21B 31/12(2006.01)
E21B 34/14(2006.01)
 E21B 17/04(2006.01)
E21B 33/12(2006.01)
(86) International application number:
PCT/US2012/050371
(87) International publication number:
WO 2013/025516 (21.02.2013 Gazette 2013/08)

(54)

DEBRIS BARRIER FOR HYDRAULIC DISCONNECT TOOLS

SCHUTTBARRIERE FÜR HYDRAULISCHE TRENNWERKZEUGE

BARRIÈRE CONTRE LES DÉPÔTS POUR OUTILS DE DÉBRANCHEMENT HYDRAULIQUES

(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: 15.08.2011 US 201113210019

(43) Date of publication of application:
25.06.2014 Bulletin 2014/26

(60) Divisional application:
18156540.9

(73) Proprietor: Halliburton Energy Services, Inc.
Houston, TX 77032-3219 (US)

(72) Inventors:
  • SHAW, Joel D.
    Houston, Texas 77019 (US)
  • MARSHALL, Greg
    Magnolia, Texas 77354 (US)

(74) Representative: Bennett, Adrian Robert J. et al
A.A. Thornton & Co. 10 Old Bailey
London EC4M 7NG
London EC4M 7NG (GB)


(56) References cited: : 
US-A- 3 433 455
US-A1- 2006 113 083
US-B1- 6 408 946
 US-A1- 2002 000 319
US-A1- 2011 108 266
   
       
    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).