(19)
(11) EP 2 677 112 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:
17.07.2019 Bulletin 2019/29

(45) Mention of the grant of the patent:
12.06.2019 Bulletin 2019/24

(21) Application number: 13184640.4

(22) Date of filing: 19.03.2010
(51) International Patent Classification (IPC): 
E21B 17/10(2006.01)
 E21B 10/26(2006.01)

(54)

Downhole drilling assembly

Bohrlochbohranordnung

Ensemble de forage de fonds de puits

(84) Designated Contracting States:
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 SE SI SK SM TR

(30) Priority: 20.03.2009 GB 0904791

(43) Date of publication of application:
25.12.2013 Bulletin 2013/52

(62) Application number of the earlier application in accordance with Art. 76 EPC:
10712750.8 / 2408996

(73) Proprietor: Halliburton Energy Services Inc.
Houston, Texas 77032 (US)

(72) Inventors:
  • Downie, Andrew McPherson
    Dunfermline, Fife KY12 8HH (GB)
  • Vitale, Pascal Michel
    38320 Eybens (FR)
  • Boussi, Bachar
    Denver, CO 80202 (US)

(74) Representative: Turner, Craig Robert 
A.A. Thornton & Co. 10 Old Bailey
London EC4M 7NG
London EC4M 7NG (GB)


(56) References cited: : 
EP-A1- 1 811 124
US-A- 4 319 649
US-A1- 2003 079 913
 WO-A1-2004/029402
US-A- 4 396 234
   
       
    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).