Rotary downhole cutting tool

Details Rotary downhole cutting tool Rotary downhole cutting tool

1993-06-30

1994-09-27

Dang, Hoang C.

Wells

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

Cutter rotates circumferentially of pipe

E21B 2900

Patent

active

053500156

ABSTRACT:
A downhole rotary cutting tool used with a rotational motor sub and powered by fluid pressure consisting of an elongate body housing having an axial piston cavity and plural, equi-spaced cutter blades mounted in plural equi-spaced longitudinal slots which communicate with the axial piston cavity. A piston in the piston cavity is subject to moving upward with application of fluid pressure to urge the cutter blades outboard into contact with surrounding tubular goods, and further increase of fluid pressure effects rotation of the cutting tool at relatively high speeds to cut the tubular goods.

REFERENCES:
patent: 1772710 (1930-08-01), Denney
patent: 2859943 (1958-11-01), Chadderdon
patent: 3087546 (1963-04-01), Woolley
patent: 3295604 (1967-01-01), Cordary et al.
patent: 3419077 (1968-12-01), Sanford
patent: 3684009 (1972-08-01), Murray
patent: 4809793 (1989-03-01), Hailey
patent: 5018580 (1991-05-01), Skipper
patent: 5201817 (1993-04-01), Hailey et al.
patent: 5265675 (1993-11-01), Hearn et al.

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