Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure
Patent
1991-12-27
1993-04-13
Dang, Hoang C.
Boring or penetrating the earth
Cutter element laterally shiftable below ground
Cutter element shifted by fluid pressure
166 558, 175267, E21B 1032, E21B 2906
Patent
active
052018172
ABSTRACT:
A downhole cutting tool for use down along a tubing string consisting of an elongate body member having central cavity and transverse slotway and receiving drilling fluid axially therethrough. An expandable double blade is pivotally housed in the slotway while fluid actuated pistons above and below are effective to expand the blades outboard on each side and to brace the blades in operative position as the body member is rotated and the blades abrade or cut the adjacent material.
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SlimDril, Inc. brochure reprinted from 36th (1984-85) Composite Catalog (four pages).
Kat Tool Inc. brochure on Thru Tubing Tools (Clean-out, Cable Cutters, Tubing Cutters)--four pages.
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