Method and apparatus to remove a downhole drill collar from...

Details Method and apparatus to remove a downhole drill collar from... Method and apparatus to remove a downhole drill collar from...

2011-08-16

2011-08-16

Bomar, Shane (Department: 3676)

Wells

Means for perforating, weakening, bending or separating pipe...

C166S058000, C166S297000

Reexamination Certificate

active

07997332

ABSTRACT:
A method of severing a drill string or other tubular string that includes lowering a torch into the drill string, positioning the torch at a joint in the drill string, such that the joint may have a pin component engaged with a box component, igniting the torch to produce cutting fluids, and directing the cutting fluids into the joint in a direction that is along a length of the drill string to cut the joint.

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