(19)

(11)

EP 4 816 670 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24898739.8 (22) Date of filing: 27.11.2024

(51) International Patent Classification (IPC):  E21B 47/008(2012.01) E21B 17/02(2006.01) E21B 43/12(2006.01) (52) Cooperative Patent Classification (CPC): E21B 43/128; E21B 47/008; G01R 31/343 (86) International application number: PCT/US2024/057695 (87) International publication number: WO 2025/117701 (05.06.2025 Gazette 2025/23)

(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: GE KH MA MD TN (30) Priority: 28.11.2023 US 202318521015 (71) Applicant: Baker Hughes Oilfield Operations LLC Houston, TX 77079 (US)	(72) Inventors: MERRIOTT, Daniel Wayne Houston, TX 77073 (US) COLLINS, Charles Houston, TX 77073 (US) PHELPS, Nicholas Houston, TX 77073 (US) BRUNNER, Christopher Houston, TX 77073 (US) ADEMOYE, Taoridi Houston, TX 77073 (US) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)