(19)
(11) EP 2 976 498 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:
07.04.2021 Bulletin 2021/14

(45) Mention of the grant of the patent:
24.02.2021 Bulletin 2021/08

(21) Application number: 14722004.0

(22) Date of filing: 11.03.2014
(51) International Patent Classification (IPC): 
G01V 3/28(2006.01)
E21B 47/017(2012.01)
G01V 3/30(2006.01)
(86) International application number:
PCT/US2014/023124
(87) International publication number:
WO 2014/150389 (25.09.2014 Gazette 2014/39)

(54)

WELL LOGGING SYSTEM AND METHOD

BOHRLOCHMESSSYSTEM UND METHODE

SYSTÈME DE DIAGRAPHIE DE PUITS ET PROCÉDÉ


(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: 22.03.2013 US 201313849332

(43) Date of publication of application:
27.01.2016 Bulletin 2016/04

(73) Proprietors:
  • China National Petroleum Corporation
    Beijing 100007 (CN)
  • Oliden Technology, LLC
    Stafford, TX 77477 (US)

(72) Inventors:
  • OKONKWO, Chidiebele, Gabriel
    Sugar Land, TX 77498 (US)
  • LI, Qiming
    Sugar Land, TX 77479 (US)
  • LI, Anzong
    Xi'an Shaanxi (CN)
  • LI, Chuanwei
    Xi'an Shaanxi (CH)
  • ZHU, Jun
    Xi'an Shaanxi (CN)

(74) Representative: Harden, Henry Simon 
Kilburn & Strode LLP Lacon London 84 Theobalds Road
London WC1X 8NL
London WC1X 8NL (GB)


(56) References cited: : 
EP-A2- 0 723 067
US-A1- 2011 074 427
US-A1- 2004 061 622
US-A1- 2011 316 542
   
       
    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).