(19)
(11) EP 4 519 540 A1

(12)

(43) Date of publication:
12.03.2025 Bulletin 2025/11

(21) Application number: 23800146.5

(22) Date of filing: 26.04.2023
(51) International Patent Classification (IPC): 
E21B 43/10(2006.01)
E21B 23/01(2006.01)
E21B 33/128(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 43/103; E21B 43/105; E21B 23/01; E21B 33/1208; E21B 33/122; E21B 33/129
(86) International application number:
PCT/US2023/066229
(87) International publication number:
WO 2023/215690 (09.11.2023 Gazette 2023/45)
(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: 02.05.2022 US 202263337528 P
25.04.2023 US 202318306467

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

(72) Inventors:
  • FURLONG, Shane Patrick
    Carrollton, Texas 75006 (US)
  • HAZELIP, Gary Lynn
    Carrollton, Texas 75006 (US)
  • MORENO, Carlos
    Carrollton, Texas 75006 (US)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) ASYMMETRIC ANCHORING RIDGE DESIGN FOR EXPANDABLE LINER HANGER