(19)

(11)

EP 3 094 813 A1

(12)

(43) Date of publication: 23.11.2016 Bulletin 2016/47 (21) Application number: 14888977.7 (22) Date of filing: 09.04.2014

(51) International Patent Classification (IPC):  E21B 33/10(2006.01) E21B 33/12(2006.01) (86) International application number: PCT/US2014/033508 (87) International publication number: WO 2015/156796 (15.10.2015 Gazette 2015/41)

(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 (71) Applicant: Halliburton Energy Services, Inc. Houston, TX 77072 (US)	(72) Inventor: DOCKWEILER, David, Allen McKinney, TX 75070 (US) (74) Representative: Bennett, Adrian Robert J. et al A.A. Thornton & Co. 10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)