(19)
(11) EP 3 887 641 A1

(12)

(43) Date of publication:
06.10.2021 Bulletin 2021/40

(21) Application number: 19891462.4

(22) Date of filing: 26.04.2019
(51) International Patent Classification (IPC): 
E21B 29/00(2006.01)
E21B 10/32(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 29/002
(86) International application number:
PCT/US2019/029359
(87) International publication number:
WO 2020/112162 (04.06.2020 Gazette 2020/23)
(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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 29.11.2018 US 201816204459

(71) Applicant: ABRADO, INC.
Houston, TX 77084 (US)

(72) Inventors:
  • RUTTLEY, David J.
    Marrero, Louisiana 70072 (US)
  • KANDASWAMI, Aravind
    Kingwood, Texas 77339 (US)

(74) Representative: Lincoln, Matthew et al
Lincoln IP 4 Rubislaw Place
Aberdeen AB10 1XN
Aberdeen AB10 1XN (GB)

   


(54) METHOD AND APPARATUS FOR LOCKING EXPANDABLE CUTTERS OF WELL BORE CASING MILL