Milling tool for cutting well casing
This patent describes an oil field cutting tool adapted to be positioned and rotated downhole in a wellbore for cutting metal casing previously positioned in the wellbore. It comprises: a tool body adapted to be disposed at least in part within the metal casing to be cut during the cutting operation, and adapted to be detachably secured at its upper end to means for rotating the too; an improved cutting structure on the tool body; cutting elements of hard, wear-resistant material of predetermined size and shape arranged and mounted on the leading face of the blades in a predetermined pattern; and the cutting elements in the predetermined pattern being arranged on the respective blade in closely spaced side-by-side relationship in predetermined rows extending in a direction generally outwardly from the longitudinal axis of rotation of the tool body.
- Assignee:
- Tri-State Oil Tools, Inc., Bossier City, LA (USA)
- Patent Number(s):
- US 5014778; A
- Application Number:
- PPN: US 7-169836
- OSTI ID:
- 5913664
- Country of Publication:
- United States
- Language:
- English
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