(19)

(11)

EP 2 888 335 A1

(12)

(43) Date of publication: 01.07.2015 Bulletin 2015/27 (21) Application number: 13833974.2 (22) Date of filing: 27.08.2013

(51) International Patent Classification (IPC):  C09K 8/467(2006.01) E21B 33/13(2006.01) C04B 14/16(2006.01) (86) International application number: PCT/US2013/056719 (87) International publication number: WO 2014/035923 (06.03.2014 Gazette 2014/10)

(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: 27.08.2012 US 201213595493 (71) Applicant: Halliburton Energy Services, Inc. Houston, TX 77072 (US)	(72) Inventors: BENKLEY, James Robert Duncan, Oklahoma 73533 (US) BRENNEIS, Darrell Chad Marlow, Oklahoma 73055 (US) RODDY, CraigWayne Duncan, Oklahoma 73533 (US) (74) Representative: Cottrill, Emily Elizabeth Helen et al A.A. Thornton & Co. 10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)