METHOD AND APPARATUS FOR LOCKING EXPANDABLE CUTTERS OF WELL BORE CASING MILL - Patent 3887641

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EP 3 887 641 A1

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

(21)	Application number: 19891462.4

(22)	Date of filing: 26.04.2019

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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

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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