(19)

(11)

EP 4 798 989 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24887030.5 (22) Date of filing: 01.11.2024

(51) International Patent Classification (IPC):  G01V 1/28(2006.01) E21B 43/00(2006.01) G06N 3/08(2023.01) (52) Cooperative Patent Classification (CPC): G06N 3/08; G01V 11/00; G01V 20/00; G06N 20/00; G06N 5/01; E21B 2200/22 (86) International application number: PCT/US2024/054222 (87) International publication number: WO 2025/097027 (08.05.2025 Gazette 2025/19)

(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: 02.11.2023 US 202363595597 P (71) Applicants: Services Pétroliers Schlumberger 75007 Paris (FR) FR  GeoQuest Systems B.V. 2514 JG 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: MUSTAPHA, Hussein Abu Dhabi (AE) SHAH, Abdur Rahman Abu Dhabi (AE) SINGH, Manish Kumar Mumbai 400706 (IN) STOJIC, Slobodan Crawley RH10 9BU (GB) GHORAYEB, Kassem Abu Dhabi (AE) (74) Representative: Schlumberger Intellectual Property Department  Parkstraat 83 2514 JG Den Haag 2514 JG Den Haag (NL)