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EP 4 437 216 A1

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(43) Date of publication: 02.10.2024 Bulletin 2024/40 (21) Application number: 22896865.7 (22) Date of filing: 22.11.2022

(51) International Patent Classification (IPC):  E21B 41/00(2006.01) E21B 17/02(2006.01) E21B 17/10(2006.01) E21B 31/18(2006.01) E21B 47/017(2012.01) E21B 17/07(2006.01) E21B 25/16(2006.01) (52) Cooperative Patent Classification (CPC): E21B 17/07; E21B 47/017; E21B 17/06; E21B 23/00 (86) International application number: PCT/AU2022/051396 (87) International publication number: WO 2023/092173 (01.06.2023 Gazette 2023/22)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 23.11.2021 AU 2021903774 (71) Applicant: Reflex Instruments Asia Pacific Pty Ltd Balcatta, WA 6021 (AU)	(72) Inventors: MOKARAMIAN, Amir Balcatta, Western Australia 6021 (AU) REILLY, James Barry Balcatta, Western Australia 6021 (AU) JAVORKA, Marian Balcatta, Western Australia 6021 (AU) (74) Representative: Forresters IP LLP  Skygarden Erika-Mann-Straße 11 80636 München 80636 München (DE)