Downhole milling tool

Details Downhole milling tool Downhole milling tool

1993-07-22

1994-12-20

Neuder, William P.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

166 556, 407 2, 407116, 408144, E21B 1026

Patent

active

053739000

ABSTRACT:
A tool for cutting or milling casing in a well is disclosed. It includes a plurality of blades extending outwardly to a substantially radial position for cutting the walls of casing strings and removing a predetermined length of the casing strings in a cutting action. The blades have cutting elements positioned on leading faces of the blades to engage the casing strings in a cutting action without tripping or removal from the bore hole. The cutting element has surface irregularities to cause the metal chips cut from the casings to break off at short lengths. The cutting element can also have stress relieving grooves to prevent the propagation of a crack across the face of the element.

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