Wellbore mills and inserts

Details Wellbore mills and inserts Wellbore mills and inserts

1997-05-01

1999-06-01

Dang, Hoang C.

Wells

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

Cutter rotates circumferentially of pipe

175426, 407116, E21B 1046

Patent

active

059080710

ABSTRACT:
A cutting insert for a tool for wellbore milling operations has been invented that has a body having a top, a bottom, and a base, and a plurality of cutting surfaces on the top of the body, one of the cutting surfaces at a different height above the base than the other cutting surface, each cutting surface defined by linear boundaries extending from a first edge of the cutting insert, and the linear boundaries parallel to each other, the plurality of cutting surfaces including at least two cutting surfaces including at least a first cutting surface and a second cutting surface, the second cutting surface at a height above the base which is greater than a height above the base of the first cutting surface. An array of cutting inserts has been invented that has a plurality of adjacent inserts, each insert with interlinking apparatus comprising a projection on each of a first portion of the inserts and a projection recess on each of a second portion of the inserts, and the inserts arranged so that a projection on one insert is positioned in a projection recess of an adjacent insert. A tool for wellbore milling operations has been invented with a milling surface with such cutting inserts.

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