Weatherford/lamb, Inc.

Michael W Henson

David Michael Haugen

Thomas Floyd Bailey

David J Brunnert

Thurman B Carter

Shane P Hart

Guy LaMonte McClung, Iii

A wellbore mill has been invented that, in certain aspects, has a body having a top and a bottom and, optionally, a fluid flow channel extending therethrough from top to bottom with, optionally, one or more fluid jetting ports in fluid communication with the fluid flow channel, milling apparatus on the body including a plurality of milling inserts, each insert mechanically secured in a corresponding recess in the body, said mechanical securement sufficient for effective milling in a wellbore. A wellbore milling method for milling an opening in a selected tubular of a tubular string in a wellbore has been invented that includes installing and using such a mill.

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San Angelo, TX, United States of America

Michael W Henson