(19)
(11) EP 1 438 481 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:
16.07.2008 Bulletin 2008/29

(45) Mention of the grant of the patent:
14.06.2006 Bulletin 2006/24

(21) Application number: 02774741.9

(22) Date of filing: 22.10.2002
(51) International Patent Classification (IPC): 
E21B 37/06(2006.01)
 E21B 43/27(2006.01)
(86) International application number:
PCT/EP2002/011807
(87) International publication number:
WO 2003/036021 (01.05.2003 Gazette 2003/18)

(54)

TREATING COMPOSITION

GEGENSEITIGE LÖSUNGSMITTEL FÜR HOCHKONZENTRIERTE BEHANDLUNGSFLÜSSIGKEITEN

COMPOSITION DE TRAITEMENT

(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

(30) Priority: 25.10.2001 US 335631 P
24.09.2002 US 253962

(43) Date of publication of application:
21.07.2004 Bulletin 2004/30

(73) Proprietors:
  • SERVICES PETROLIERS SCHLUMBERGER
    75007 Paris (FR)
    Designated Contracting States:
    FR 
  • SCHLUMBERGER HOLDINGS LIMITED
    Road Town, Tortola (VG)
    Designated Contracting States:
    GB NL 
  • SCHLUMBERGER TECHNOLOGY B.V.
    2514 JG Den Haag (NL)
    Designated Contracting States:
    AT DE DK IT 
  • SOFITECH N.V.
    Uccle (1180 Bruxelles) (BE)
    Designated Contracting States:
    BE BG CH CY CZ EE ES FI GR IE LI LU MC PT SE SK TR 

(72) Inventors:
  • FRENIER, Wayne
    Katy, TX 77449 (US)
  • BRADY, Mark
    Arab League Street, Zone 68, Doha, Qatar (QA)

(74) Representative: Ménès, Catherine 
Etudes et Productions Schlumberger Service Propriété Intellectuelle 1 Rue Henri Becquerel
92142 Clamart Cédex
92142 Clamart Cédex (FR)


(56) References cited: : 
WO-A-01/83639
 US-A- 4 949 790
   
       
    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).