Methods and apparatus for severing nested strings of tubulars

Details Methods and apparatus for severing nested strings of tubulars Methods and apparatus for severing nested strings of tubulars

2007-01-02

2007-01-02

Gay, Jennifer H. (Department: 3672)

Wells

Above ground apparatus

With means facilitating connecting or disconnecting...

C166S055000, C166S298000, C081S057350

Reexamination Certificate

active

11006050

ABSTRACT:
An apparatus and method for use in severing casing as it is pulled from a wellbore. In one aspect, the apparatus, includes a clamping assembly, a drilling assembly and a cutting assembly. The apparatus is disposed at the end of a telescopic arm, with the components being remotely operated by personnel using a control panel. The apparatus is positioned adjacent casing and clamped thereto. Thereafter, the apparatus drills a hole completely through the casing for the insertion of a retention pin. The apparatus then severs the casing.

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