Downhole tool with replaceable tool sleeve sections

Details Downhole tool with replaceable tool sleeve sections Downhole tool with replaceable tool sleeve sections

1983-07-25

1985-10-29

Novosad, Stephen J.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

175406, 166241, F21B 1710

Patent

active

045496137

ABSTRACT:
A downhole tool for insertion in a drill stem includes elongated cylindrical half sleeve tool sections adapted to be non-rotatably supported on an elongated cylindrical body. The tool sections are mountable on and removable from the body without disconnecting either end of the tool from a drill stem. The half sleeve tool sections are provided with tapered axially extending flanges on their opposite ends which fit in corresponding tapered recesses formed on the tool body and the tool sections are retained on the body by a locknut threadedly engaged with the body and engageable with an axially movable retaining collar. The tool sections may be drivably engaged with axial keys formed on the body or the tool sections may be formed with flat surfaces on the sleeve inner sides cooperable with complementary flat surfaces formed on a reduced diameter portion of the body around which the tool sections are mounted.

REFERENCES:
patent: 1754830 (1930-04-01), MacClatchie
patent: 1764133 (1930-06-01), Weisgerber
patent: 1764377 (1930-06-01), Wickersham
patent: 2210824 (1940-08-01), Walker, Sr.
patent: 2719699 (1955-10-01), Baker
patent: 3276824 (1966-09-01), Carter
patent: 3447839 (1969-06-01), Salvatori
patent: 3933395 (1976-01-01), Evans
patent: 4108257 (1978-08-01), Sizer
patent: 4245709 (1981-01-01), Manuel
patent: 4258804 (1981-03-01), Richey et al.

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