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EP 4 093 971 A1

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(43) Date of publication: 30.11.2022 Bulletin 2022/48 (21) Application number: 20915243.8 (22) Date of filing: 22.12.2020

(51) International Patent Classification (IPC):  F04B 23/06(2006.01) E21B 43/12(2006.01) F04B 1/14(2020.01) (52) Cooperative Patent Classification (CPC): F04B 23/06; F04B 1/14; E21B 43/12; F04B 47/06 (86) International application number: PCT/US2020/066685 (87) International publication number: WO 2021/150342 (29.07.2021 Gazette 2021/30)

(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: 23.01.2020 US 202062964935 P (71) Applicant: Hess Corporation New York, NY 10036 (US)

(72) Inventors: OMAN, Simon Richardson, Texas 75082 (US) NAGODE, Marko Richardson, Texas 75082 (US) KLEMENC, Jernej Richardson, Texas 75082 (US) MAJDIC, Franc Richardson, Texas 75082 (US) HOCEVAR, Marko Richardson, Texas 75082 (US) GOSAR, Ales Richardson, Texas 75082 (US) SKRLEC, Andrej Richardson, Texas 75082 (US) OLAH, Laslo Richardson, Texas 75082 (US) (74) Representative: Forresters IP LLP  Skygarden Erika-Mann-Straße 11 80636 München 80636 München (DE)