(19)
(11) EP 2 113 016 A1

(12)

(43) Date of publication:
04.11.2009 Bulletin 2009/45

(21) Application number: 08709475.1

(22) Date of filing: 20.02.2008
(51) International Patent Classification (IPC): 
C09K 8/08(2006.01)
C09K 8/72(2006.01)
C09K 8/528(2006.01)
(86) International application number:
PCT/GB2008/000591
(87) International publication number:
WO 2008/102138 (28.08.2008 Gazette 2008/35)
(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: 22.02.2007 US 709551
22.02.2007 US 709552

(71) Applicant: Halliburton Energy Services, Inc.
Duncan, OK 73533 (US)

(72) Inventor:
  • WELTON, Thomas, D.
    Duncan, OK 73533 (US)

(74) Representative: Curtis, Philip Anthony 
A.A. Thornton & Co. 235 High Holborn
London WC1V 7LE
London WC1V 7LE (GB)

   


(54) CROSSLINKED ACIDS COMPRISING DERIVATIZED XANTHAN AND SUBTERRANEAN ACIDIZING APPLICATIONS