METHOD OF FORMING A WINDOW IN A CASING

WIPO Patent Application WO/2004/046499

A1

A method of cutting through a tubular, in particular, a casing at a selected location in a wellbore using a remotely controlled electrically powered cutting tool that comprises (a) a tool body, (b) a cutting head provided with a cutting means, the cutting head pivotally mounted on the tool body at or near the lower end thereof, and (c) an electrically actuatable means for pivoting the cutting head with respect to the tool body, the method comprising the steps of: passing the cutting tool to the selected location in the wellbore with the longitudinal axis of the cutting head aligned with the longitudinal axis of the tool body; pivoting the cutting head with respect to the tool body to a position where the cutting means of the cutting head is adjacent the wall of the tubular; and actuating the cutting means to cut through the tubular of the wellbore.

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HEAD PHILIP (GB)
LURIE PAUL GEORGE (GB)

PCT/GB2003/004785

June 03, 2004

November 05, 2003

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BP EXPLORATION OPERATING (GB)
XL TECHNOLOGY LTD (GB)
HEAD PHILIP (GB)
LURIE PAUL GEORGE (GB)

E21B7/06; E21B29/06; (IPC1-7): E21B29/06; E21B7/06

WO1996004457A1	1996-02-15
WO1999064715A1	1999-12-16

US4809775A	1989-03-07
US3225828A	1965-12-28
US6474415B1	2002-11-05
GB1091030A	1967-11-15
US2859943A	1958-11-11
US3195636A	1965-07-20
US3331439A	1967-07-18
GB2401155A

DATABASE WPI Section Ch Week 197913, Derwent World Patents Index; Class H01, AN 1979-25386B, XP002273630

Raybaud, Hélène (Schlumberger Riboud Product Centre 1, rue Becquere, BP 202 Clamart, FR)

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