(19)

(11)

EP 3 755 868 A1

(12)

(43) Date of publication: 30.12.2020 Bulletin 2020/53 (21) Application number: 19756914.8 (22) Date of filing: 22.02.2019

(51) International Patent Classification (IPC):  E21B 23/06(2006.01) E21B 29/02(2006.01) E21B 43/11(2006.01) E21B 23/04(2006.01) E21B 33/134(2006.01) E21B 43/116(2006.01) (86) International application number: PCT/US2019/019261 (87) International publication number: WO 2019/165286 (29.08.2019 Gazette 2019/35)

(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: KH MA MD TN (30) Priority: 23.02.2018 US 201862634734 P (71) Applicant: Hunting Titan, Inc. Pampa, TX 79065 (US)	(72) Inventors: COVALT, Johnny Burleson, TX 76028 (US) HENKE, Joseph, Albert Hallettsville, TX 77964 (US) (74) Representative: Viering, Jentschura & Partner mbB Patent- und Rechtsanwälte  Am Brauhaus 8 01099 Dresden 01099 Dresden (DE)