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(11)

EP 3 344 945 A1

(12)

(43) Date of publication: 11.07.2018 Bulletin 2018/28 (21) Application number: 16763699.2 (22) Date of filing: 01.09.2016

(51) International Patent Classification (IPC):  F42B 1/02(2006.01) E21B 43/117(2006.01) F42B 3/00(2006.01) E21B 43/116(2006.01) E21B 43/1185(2006.01) F42D 1/04(2006.01) (86) International application number: PCT/US2016/049938 (87) International publication number: WO 2017/040806 (09.03.2017 Gazette 2017/10)

(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 Designated Validation States: MA MD (30) Priority: 02.09.2015 US 201562213235 P 31.08.2016 US 201615253057 (71) Applicant: Owen Oil Tools LP Houston, TX 77040 (US)	(72) Inventors: GEERTS, Shaun M. Crowley, TX 76036 (US) WOOD, Jeffrey D. Keller, TX 76248 (US) (74) Representative: Vigars, Christopher Ian  Astrum ElementOne Limited Tower House Fairfax Street Bristol BS1 3BN Bristol BS1 3BN (GB)