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EP 4 581 234 A1

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(43) Date of publication: 09.07.2025 Bulletin 2025/28 (21) Application number: 23868863.4 (22) Date of filing: 19.09.2023

(51) International Patent Classification (IPC):  E21B 43/00(2006.01) E21B 49/00(2006.01) G06G 7/00(2006.01) E21B 43/26(2006.01) G06G 7/48(2006.01) (52) Cooperative Patent Classification (CPC): E21B 43/00; E21B 2200/20; E21B 41/00 (86) International application number: PCT/US2023/033139 (87) International publication number: WO 2024/064134 (28.03.2024 Gazette 2024/13)

(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: 19.09.2022 US 202263376226 P (71) Applicants: Services Pétroliers Schlumberger 75007 Paris (FR) FR  GeoQuest Systems B.V. 2586 BJ The Hague (NL) AL AT BE BG CH CY CZ DE DK EE ES FI 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

(72) Inventors: BULMAN, Simon Abingdon Oxfordshire OX14 4RU (GB) AMOUDRUZ, Pierre Abingdon Oxfordshire OX14 4RU (GB) WELLS, Benjamin Abingdon Oxfordshire OX14 4RU (GB) ROY, Sonali Abingdon Oxfordshire OX14 4RU (GB) HARB, Ahmad Abingdon Oxfordshire OX14 4RU (GB) TORRENS, Richard Abingdon Oxfordshire OX14 4RU (GB) (74) Representative: Schlumberger Intellectual Property Department  Parkstraat 83 2514 JG Den Haag 2514 JG Den Haag (NL)