Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1991-04-04
1992-09-29
Neuder, William P.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
166 556, 407 2, 407116, 408144, E21B 1026
Patent
active
051507552
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, and outer sides (60, 62, 64) of the blades (36). The 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.
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P. 4 of Tri-State Oil Tools General Catalog 1990 (published Mar. 1990).
Cassel Terry E.
Lynde Gerald D.
Payne Harold E.
Baker Hughes Incorporated
Neuder William P.
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