WO2017087111 MILLS WITH SHEARABLE CUTTING MEMBERS FOR MILLING CASINGS IN WELLBORES

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Publication Number WO/2017/087111

Publication Date 26.05.2017

International Application No. PCT/US2016/057464

International Filing Date 18.10.2016

IPC

CPC

Applicants

BAKER HUGHES INCORPORATED [US]/[US]

Inventors

HART, Daniel R.

Priority Data

14/947,543

20.11.2015

Publication Language English (en)

Filing Language English (EN)

Designated States

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Title

(EN) MILLS WITH SHEARABLE CUTTING MEMBERS FOR MILLING CASINGS IN WELLBORES

(FR) FRAISE À ÉLÉMENTS DE COUPE CISAILLABLES POUR LE FRAISAGE DE TUBAGES DANS DES PUITS DE FORAGE

Abstract

(EN) A mill for milling a casing in a wellbore is disclosed that in one non-limiting embodiment includes a plurality of radially extendable cutting members on a body, an activation device that extends the cutting members radially outward from the body upon application of a hydraulic pressure to the activation device and mechanically retracts the blades upon removal of the hydraulic pressure from the activation device, and wherein the cutting members are separable from the body

(FR) L'invention concerne une fraise pour le fraisage d'un tubage dans un puits de forage qui, dans un mode de réalisation non limitatif, comprend une pluralité d'éléments de coupe extensibles radialement sur un corps, un dispositif d'activation qui étend les éléments de coupe radialement à l'extérieur du corps lors de l'application d'une pression hydraulique au dispositif d'activation et rétracte mécaniquement les lames lors de la suppression de la pression hydraulique du dispositif d'activation, les éléments de coupe étant séparables du corps.

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
29	Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10	Drill bits
26	Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
32	with expansible cutting tools

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
29	Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10	Drill bits
26	Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
32	with expansible cutting tools

E	FIXED CONSTRUCTIONS
21	EARTH DRILLING; MINING
B	EARTH DRILLING, e.g. DEEP DRILLING
29	Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows
002	Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
005	with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window

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1. WO2017087111 - MILLS WITH SHEARABLE CUTTING MEMBERS FOR MILLING CASINGS IN WELLBORES