(19)

(11)

EP 4 547 933 A2

(12)

(88) Date of publication A3: 08.02.2024 (43) Date of publication: 07.05.2025 Bulletin 2025/19 (21) Application number: 23832366.1 (22) Date of filing: 29.06.2023

(51) International Patent Classification (IPC):  E21B 21/08(2006.01) E21B 47/18(2012.01) E21B 44/00(2006.01) E21B 47/06(2012.01) E21B 21/00(2006.01) (52) Cooperative Patent Classification (CPC): E21B 21/08; E21B 47/06 (86) International application number: PCT/US2023/026644 (87) International publication number: WO 2024/006478 (04.01.2024 Gazette 2024/01)

(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: 30.06.2022 US 202263357418 P (71) Applicant: Grant Prideco, Inc. Houston, TX 77042 (US)	(72) Inventors: JOHNSON, Austin Houston, TX 77042 (US) BOUCHER, Marcel Houston, TX 77042 (US) (74) Representative: Strachan, Victoria Jane  Strachan IP Limited New Cottage, Marden Hereford, Herefordshire, HR1 3EN Hereford, Herefordshire, HR1 3EN (GB)