(19)

(11)

EP 2 417 329 A2

(12)

(88) Date of publication A3: 20.01.2011 (43) Date of publication: 15.02.2012 Bulletin 2012/07 (21) Application number: 10762384.5 (22) Date of filing: 07.04.2010

(51) International Patent Classification (IPC):  E21B 43/08(2006.01) E21B 43/10(2006.01) (86) International application number: PCT/US2010/030264 (87) International publication number: WO 2010/118151 (14.10.2010 Gazette 2010/41)

(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 MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 08.04.2009 US 420499 (71) Applicant: Halliburton Energy Services, Inc. Houston, TX 77072 (US)	(72) Inventors: BONNER, Aaron, James Flower Mound Texas 75028 (US) LOPEZ, Jean-Marc Plano Texas 75025 (US) (74) Representative: Bennett, Adrian Robert J. et al A.A. Thornton & Co. Mechanical 235 High Holborn London WC1V 7LE London WC1V 7LE (GB)