(19)

(11)

EP 4 532 890 A1

(12)

(43) Date of publication: 09.04.2025 Bulletin 2025/15 (21) Application number: 23729697.5 (22) Date of filing: 25.05.2023

(51) International Patent Classification (IPC):  E21B 29/02(2006.01) E21B 33/12(2006.01) (52) Cooperative Patent Classification (CPC): E21B 33/1208; E21B 29/02 (86) International application number: PCT/EP2023/064022 (87) International publication number: WO 2023/232618 (07.12.2023 Gazette 2023/49)

(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: 30.05.2022 NO 20220622 (71) Applicant: Interwell P&A AS 4089 Hafrsfjord (NO)	(72) Inventors: TØNDEL, Stian 7071 Trondheim (NO) RUSTEN, Torgeir 7560 Vikhammer (NO) (74) Representative: Onsagers AS  P.O. Box 1813 Vika 0123 Oslo 0123 Oslo (NO)