(19)
(11) EP 2 188 492 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:
30.12.2015 Bulletin 2015/53

(45) Mention of the grant of the patent:
01.07.2015 Bulletin 2015/27

(21) Application number: 08797930.8

(22) Date of filing: 15.08.2008
(51) International Patent Classification (IPC): 
E21B 47/01(2012.01)
(86) International application number:
PCT/US2008/073230
(87) International publication number:
WO 2009/032504 (12.03.2009 Gazette 2009/11)

(54)

TRANSDUCER ASSEMBLIES FOR SUBSURFACE LOGGING USE

ANORDNUNGEN VON MESSWANDLERN FÜR BOHRLOCH - MESSUNGEN

ENSEMBLES DE TRANSDUCTEURS POUR UTILISATION SOUTERRAINE

(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 MT NL NO PL PT RO SE SI SK TR

(30) Priority: 31.08.2007 US 848441

(43) Date of publication of application:
26.05.2010 Bulletin 2010/21

(73) Proprietors:
  • Schlumberger Technology B.V.
    2514 JG The Hague (NL)
    Designated Contracting States:
    BG CZ DE DK GR HU IE IT LT NO PL RO SI SK TR 
  • PRAD Research and Development Limited
    Road Town, Tortola (VG)
    Designated Contracting States:
    AT BE CH CY EE ES FI HR IS LI LU LV MC MT PT SE 
  • Services Pétroliers Schlumberger
    75007 Paris (FR)
    Designated Contracting States:
    FR 
  • Schlumberger Holdings Limited
    Road Town, Tortola (VG)
    Designated Contracting States:
    GB NL 

(72) Inventors:
  • HE, Qingyan
    Pearland, TX 77584 (US)
  • DEL CAMPO, Chris
    Houston, TX 77050 (US)
  • WARD, Richard, Dan
    Pasadena Texas 77505 (US)

(74) Representative: Finnegan Europe LLP 
16 Old Bailey
London EC4M 7EG
London EC4M 7EG (GB)


(56) References cited: : 
EP-A- 1 598 519
US-A- 4 738 812
US-A1- 2005 150 655
US-A1- 2007 062 274
 GB-A- 2 420 624
US-A1- 2004 065 437
US-A1- 2005 152 219
US-A1- 2007 107 896
   
       
    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).