Wells – Means for perforating – weakening – bending or separating pipe... – Cutter rotates circumferentially of pipe
Patent
1994-10-17
1995-10-10
Neuder, William P.
Wells
Means for perforating, weakening, bending or separating pipe...
Cutter rotates circumferentially of pipe
407 2, 407116, 408144, E21B 1026
Patent
active
054563127
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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Harvey, Jr. Harold H.
Lynde Gerald D.
Baker Hughes Incorporated
Neuder William P.
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