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EP 4 460 620 A1

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(43) Date of publication: 13.11.2024 Bulletin 2024/46 (21) Application number: 23737571.2 (22) Date of filing: 05.01.2023

(51) International Patent Classification (IPC):  E21B 47/04(2012.01) E21B 47/002(2012.01) E21B 44/02(2006.01) E21B 41/00(2006.01) (52) Cooperative Patent Classification (CPC): E21B 44/02; E21B 47/04 (86) International application number: PCT/US2023/010162 (87) International publication number: WO 2023/133175 (13.07.2023 Gazette 2023/28)

(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: 05.01.2022 US 202263266424 P (71) Applicants: Services Pétroliers Schlumberger 75007 Paris (FR) FR  Schlumberger Technology 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: ABUHAIKAL, Muhannad Abdelaziz Cambridge, Massachusetts 02139 (US) SU, Tianxiang Cambridge, Massachusetts 02139 (US) RAMAN, Suraj Kiran Cambridge, Massachusetts 02139 (US) (74) Representative: Schlumberger Intellectual Property Department  Parkstraat 83 2514 JG Den Haag 2514 JG Den Haag (NL)