(19)
(11) EP 3 119 988 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:
03.07.2019 Bulletin 2019/27

(45) Mention of the grant of the patent:
22.05.2019 Bulletin 2019/21

(21) Application number: 14891851.9

(22) Date of filing: 15.05.2014
(51) International Patent Classification (IPC): 
E21B 47/12(2012.01)
E21B 47/18(2012.01)
 E21B 47/13(2012.01)
E21B 21/10(2006.01)
(86) International application number:
PCT/US2014/038217
(87) International publication number:
WO 2015/174990 (19.11.2015 Gazette 2015/46)

(54)

CONTROL OF OILFIELD TOOLS USING MULTIPLE MAGNETIC SIGNALS

STEUERUNG VON ERDÖLFÖRDERUNGSWERKZEUGEN ANHAND MEHRERER MAGNETISCHER SIGNALE

COMMANDE D'OUTILS DE CHAMP PÉTROLIFÈRE À L'AIDE DE MULTIPLES SIGNAUX MAGNÉTIQUES

(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

(43) Date of publication of application:
25.01.2017 Bulletin 2017/04

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

(72) Inventors:
  • MERRON, Matthew James
    Dallas, TX 75201 (US)
  • WALTON, Zachary William
    Coppell, TX 75019 (US)
  • RHODES, Robert William
    Claremore, OK 74017 (US)
  • EIS, Andrew
    Spring, TX 77379 (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: : 
WO-A1-2006/048616
US-A1- 2009 308 588
US-A1- 2011 232 917
US-A1- 2013 043 048
US-A1- 2013 048 290
 US-A- 5 299 640
US-A1- 2011 232 917
US-A1- 2013 020 092
US-A1- 2013 048 290
   
       
    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).