Window forming by flame cutting

Details Window forming by flame cutting Window forming by flame cutting

B - Operations, Transporting

23

K

B23K 7/00 (2006.01) E21B 29/02 (2006.01) E21B 29/06 (2006.01)

Patent

CA 2296122

A tool containing a solid combustible material is used to provide a pipe--cutting flame and to direct a pipe-cutting flame against a casing or tubular. The nozzles can be configured in any desired array and intensity. In the preferred embodiment, a rectangular window is burned away completely if the nozzles are sufficiently intense or the window is formed in segments if other distributions are used. The device can be anchored by a packer or anchor and can be run in the wellbore on tubing, wireline or electric line. The window can be produced in a single trip. The tool can be removed and a kick-off diverter installed adjacent the window for milling the lateral.

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