(19)

(11)

EP 2 971 502 A2

(12)

(88) Date of publication A3: 10.12.2015 (43) Date of publication: 20.01.2016 Bulletin 2016/03 (21) Application number: 14775121.8 (22) Date of filing: 13.03.2014

(51) International Patent Classification (IPC):  E21B 49/00(2006.01) (86) International application number: PCT/US2014/026360 (87) International publication number: WO 2014/160348 (02.10.2014 Gazette 2014/40)

(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 Designated Extension States: BA ME (30) Priority: 13.03.2013 US 201361780674 P 31.01.2014 US 201414170185 (71) Applicant: Betazi, LLC Austin, Texas 78701 (US)	(72) Inventors: CONRADSON, Janette Truckee, California 96161 (US) ARORA, Nimar S. Union City, California 94587 (US) KUZMA, Heidi A. Truckee, California 96161 (US) PIERCE, Christian Truckee, California 96161 (US) KETCHAM, Wesley Chicago, Illinois 60647 (US) (74) Representative: Hanna, Peter William Derek et al Hanna Moore + Curley 13 Lower Lad Lane Dublin 2, D02 T668 Dublin 2, D02 T668 (IE)