Method and apparatus for removing casing

Details Method and apparatus for removing casing Method and apparatus for removing casing

2006-03-24

2009-11-24

Thompson, Kenneth (Department: 3672)

Wells

Above ground apparatus

With assembly or disassembly means

C166S298000, C166S377000, C166S055200

Reexamination Certificate

active

07621321

ABSTRACT:
A method and apparatus for removing a string of casing from a well bore. The method and apparatus include a plurality of drill bits substantially aligned with each other for drilling a plurality of holes in the string of casing. The plurality of holes can be used to lift the string in casing from the well bore via a series of incremental casing sections.

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