(19)

(11)

EP 2 553 213 A2

(12)

(88) Date of publication A3: 21.06.2012 (43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11711966.9 (22) Date of filing: 24.03.2011

(51) International Patent Classification (IPC):  E21B 33/134(2006.01) E21B 33/129(2006.01) (86) International application number: PCT/GB2011/000427 (87) International publication number: WO 2011/121277 (06.10.2011 Gazette 2011/40)

(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 (30) Priority: 31.03.2010 US 751370 (71) Applicant: Halliburton Energy Services, Inc. Duncan, OK 73536 (US)	(72) Inventors: PORTER, Jesse, C. Duncan, OK 73533 (US) MANKE, Kevin, Ray Marlow, OK 73055 (US) (74) Representative: Cottrill, Emily Elizabeth Helen  A.A. Thornton & Co. 235 High Holborn London WC1V 7LE London WC1V 7LE (GB)