(19)
(11) EP 4 824 387 A1

(12)

(43) Date of publication:
21.10.2026 Bulletin 2026/43

(21) Application number: 24904793.7

(22) Date of filing: 11.12.2024
(51) International Patent Classification (IPC): 
E21B 34/06(2006.01)
E21B 17/02(2006.01)
 E21B 34/10(2006.01)
E21B 34/14(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 43/128; E21B 34/066
(86) International application number:
PCT/US2024/059533
(87) International publication number:
WO 2025/128680 (19.06.2025 Gazette 2025/25)
(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: 13.12.2023 US 202363609723 P
10.12.2024 US 202418975414

(71) Applicant: Halliburton Energy Services Inc.
Houston, Texas 77032-3219 (US)

(72) Inventors:
  • GUNASEKARAN, Mohan
    Al-Khobar, 31952 (SA)
  • EL MALLAWANY, Ibrahim
    Al-Khobar, 31952 (SA)
  • DOCKWEILER, David Allen
    Singapore 637131 (SG)
  • FRIPP, Michael Linley
    Singapore 637131 (SG)

(74) Representative: Bennett, Adrian Robert J. 
Venner Shipley LLP TIDE Bankside 8 Emerson Street
London SE1 9DU
London SE1 9DU (GB)

   


(54) A DOWNHOLE TOOL INCLUDING A SWITCH SYSTEM CONFIGURED TO SWITCH POWER BETWEEN A FIRST DOWNHOLE DEVICE AND A SECOND DOWNHOLE DEVICE