(19)

(11)

EP 4 189 203 A1

(12)

(43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21851518.7 (22) Date of filing: 28.07.2021

(51) International Patent Classification (IPC):  E21B 4/02(2006.01) F01C 1/22(2006.01) E21B 4/00(2006.01) F04C 13/00(2006.01) (52) Cooperative Patent Classification (CPC): F04C 2/10; F04C 2230/91; F04C 2240/802 (86) International application number: PCT/US2021/043494 (87) International publication number: WO 2022/026572 (03.02.2022 Gazette 2022/05)

(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: 31.07.2020 US 202063059856 P (71) Applicant: Baker Hughes Oilfield Operations, LLC Houston, Texas 77073 (US)	(72) Inventor: BARTSCHERER, Erik Houston, Texas 77073 (US) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)