(19)
(11) EP 2 859 060 A1

(12)

(43) Date of publication:
15.04.2015 Bulletin 2015/16

(21) Application number: 13800948.5

(22) Date of filing: 29.05.2013
(51) International Patent Classification (IPC): 
C09K 8/32(2006.01)
E21B 43/22(2006.01)
(86) International application number:
PCT/US2013/043004
(87) International publication number:
WO 2013/184457 (12.12.2013 Gazette 2013/50)
(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
Designated Extension States:
BA ME

(30) Priority: 07.06.2012 US 201261656733 P
10.07.2012 US 201213545706
28.05.2013 US 201313903692

(71) Applicant: Baker Hughes Incorporated
Houston, TX 77210 (US)

(72) Inventors:
  • MONTEIRO, Othon, R.
    Houston, TX 77005 (US)
  • ELLIS, Daniel, R.
    Crosby, TX 77532 (US)

(74) Representative: Hoffmann, Benjamin 
Dehns St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) FLUIDS FOR USE WITH HIGH-FREQUENCY DOWNHOLE TOOLS