Downhole milling tool

Details Downhole milling tool Downhole milling tool

1992-09-21

1994-03-29

Neuder, William P.

Wells

Processes

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

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

Patent

active

052976300

ABSTRACT:
A cutting tool (22) includes a plurality of pivoted blades (36) for swinging outwardly to an expanded radial position for first cutting the walls of multiple casing strings (10, 11), and then removing a predetermined length of the casing strings (10, 11) simultaneously in a cutting action. Pivoted blades (36) have cutting elements (66) of a similar size and shape positioned about upper, lower sides (62) of the blades (36) engage the upper annular cut ends of the casing strings (10, 11) in a cutting action without tripping or removal from the bore hole.

REFERENCES:
patent: 2846193 (1958-08-01), Chadderdon
patent: 2922627 (1960-01-01), Kammerer
patent: 3110084 (1963-11-01), Kinzbach
patent: 3114416 (1963-12-01), Kammerer
patent: 3331439 (1967-07-01), Sanford
patent: 4710074 (1987-12-01), Springer
patent: 4717290 (1988-01-01), Reynolds et al.
patent: 4796709 (1989-01-01), Lynde et al.
patent: 4938291 (1990-07-01), Lynde et al.
patent: 4978260 (1990-12-01), Lynde et al.
patent: 5058666 (1991-10-01), Lynde et al.

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