(19)
(11) EP 2 964 719 A1

(12)

(43) Date of publication:
13.01.2016 Bulletin 2016/02

(21) Application number: 14732654.0

(22) Date of filing: 09.03.2014
(51) International Patent Classification (IPC): 
C09K 8/36(2006.01)
(86) International application number:
PCT/US2014/022214
(87) International publication number:
WO 2014/164381 (09.10.2014 Gazette 2014/41)
(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: 09.03.2013 US 201313791958

(71) Applicant: Halliburton Energy Services, Inc.
Houston, TX 77072-5206 (US)

(72) Inventors:
  • WAGLE, Vikrant, Bhavanishankar
    Mumbai Maharastra 400064 (IN)
  • MAGHRABI, Shadaab, Syed
    Thane Maharastra 401107 (IN)
  • KULKARNI, Dhanashree, Gajanan
    Pune Maharashtra 411015 (IN)

(74) Representative: King, Lawrence 
A.A. Thornton & Co. 10 Old Bailey
London EC4M 7NG
London EC4M 7NG (GB)

   


(54) METHOD OF DRILLING BOREHOLES WITH INVERT EMULSION DRILLING FLUIDS CHARACTERIZED BY FLAT RHEOLOGY