Intermediate weight drill string member

Details Intermediate weight drill string member Intermediate weight drill string member

1980-11-26

1984-07-17

Arola, Dave W.

Pipe joints or couplings

Particular interface

Tapered

175323, 308 4A, 464183, 285286, 403343, F16L 2500

Patent

active

044602022

ABSTRACT:
An improved intermediate weight member to be put in a drill string between the collars and the drill pipe which has a spiraled outer surface, and which is so configured as to provide a uniform bending moment of inertia over its length including the slip area.

REFERENCES:
patent: 1714818 (1929-05-01), Reel
patent: 2295873 (1942-09-01), Stone
patent: 2334350 (1943-11-01), Neuhaus
patent: 2999552 (1961-09-01), Fox
patent: 3080179 (1963-03-01), Huntsinger
patent: 3125173 (1964-03-01), Fox
patent: 3784238 (1974-01-01), Chance et al.

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