(19)
(11) EP 2 917 462 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:
26.02.2020 Bulletin 2020/09

(45) Mention of the grant of the patent:
08.01.2020 Bulletin 2020/02

(21) Application number: 13771194.1

(22) Date of filing: 26.09.2013
(51) International Patent Classification (IPC): 
E21B 33/10(2006.01)
E21B 47/06(2012.01)
 E21B 34/06(2006.01)
E21B 47/10(2012.01)
(86) International application number:
PCT/GB2013/052515
(87) International publication number:
WO 2014/049360 (03.04.2014 Gazette 2014/14)

(54)

WELL ISOLATION

BOHRLOCHISOLIERUNG

ISOLATION DE PUITS

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR 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: 26.09.2012 GB 201217229

(43) Date of publication of application:
16.09.2015 Bulletin 2015/38

(73) Proprietor: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Houston, Texas 77056 (US)

(72) Inventor:
  • PURKIS, Daniel George
    Aberdeen, Aberdeenshire AB21 0DR (GB)

(74) Representative: Moreland, David 
Marks & Clerk LLP Aurora 120 Bothwell Street
Glasgow G2 7JS
Glasgow G2 7JS (GB)


(56) References cited: : 
EP-A1- 2 196 622
WO-A1-2006/133313
GB-A- 2 439 187
US-A1- 2005 035 874
US-A1- 2006 248 949
 WO-A1-2006/133313
WO-A2-2010/123585
US-A- 5 995 449
US-A1- 2005 285 753
US-A1- 2010 163 235
   
       
    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).