(19)

(11)

EP 4 010 560 A1

(12)

(43) Date of publication: 15.06.2022 Bulletin 2022/24 (21) Application number: 20750621.3 (22) Date of filing: 28.07.2020

(51) International Patent Classification (IPC):  E21B 45/00(2006.01) E21B 44/00(2006.01) E21B 47/002(2012.01) E21B 47/00(2012.01) E21B 47/07(2012.01) (52) Cooperative Patent Classification (CPC): E21B 45/00; E21B 47/00; E21B 44/00; E21B 47/07; E21B 47/002 (86) International application number: PCT/EP2020/071318 (87) International publication number: WO 2021/023586 (11.02.2021 Gazette 2021/06)

(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: 08.08.2019 GB 201911344 (71) Applicant: Nemein Limited Bridgend South Wales CF32 9TX (GB)	(72) Inventors: TILL, Lawrence Bridgend South Wales CF32 9TX (GB) BOURNE, Suzannah Bridgend South Wales CF32 9TX (GB) (74) Representative: Bazant-Hegemark, Florian  Concept IP Cheltenham Ltd PO Box 1328 Cheltenham GL50 9EG Cheltenham GL50 9EG (GB)