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(11)

EP 3 980 622 A1

(12)

(43) Date of publication: 13.04.2022 Bulletin 2022/15 (21) Application number: 20818312.9 (22) Date of filing: 04.06.2020

(51) International Patent Classification (IPC):  E21B 4/16(2006.01) E21B 25/04(2006.01) E21B 10/02(2006.01) E21B 10/44(2006.01) E21B 4/20(2006.01) E21B 27/04(2006.01) E21B 49/02(2006.01) E21B 10/60(2006.01) (52) Cooperative Patent Classification (CPC): E21B 25/10; E21B 25/04; E21B 10/44; E21B 4/14 (86) International application number: PCT/AU2020/000046 (87) International publication number: WO 2020/243767 (10.12.2020 Gazette 2020/50)

(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: 04.06.2019 AU 2019901913 (71) Applicant: Reed, Paul Edens Landing QLD 4207 (AU)	(72) Inventor: Reed, Paul Edens Landing QLD 4207 (AU) (74) Representative: Fulton, David James et al Lincoln IP 4 Rubislaw Place Aberdeen, Aberdeenshire, AB10 1XN Aberdeen, Aberdeenshire, AB10 1XN (GB)