Stabilizer for drill strings

Details Stabilizer for drill strings Stabilizer for drill strings

1974-01-02

1976-03-23

Brown, David H.

Boring or penetrating the earth

With tool shaft detail

Helix or helically arranged structure

175325, 285 16, 285381, 308 4A, E21B 1704

Patent

active

039454460

ABSTRACT:
Stabilizer apparatus for a drill string or other running string, including a body structure forming part of a rotary drill string and a stabilizer positioned on an end portion of said body structure, the stabilizer comprising a stabilizer sleeve having a conical interior surface which is shrink-fitted onto a mating external conical surface of such body structure by fluid pressure actuated or hydraulic means, permitting a safe, strong interconnection between the stabilizer and the drill string body structure, which stabilizer can be readily removed when necessary and replaced with another stabilizer similarly shrink-fitted onto the drill string body structure.

REFERENCES:
patent: 1583262 (1926-05-01), Smith
patent: 1721004 (1929-07-01), Debose
patent: 1764769 (1930-06-01), Woods
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patent: 2589534 (1952-03-01), Buttolph
patent: 2592854 (1952-04-01), Boice
patent: 2617672 (1952-11-01), Nichols
patent: 2657956 (1953-11-01), Hall
patent: 2671949 (1954-03-01), Welton
patent: 2869827 (1959-01-01), Cook
patent: 3063143 (1962-11-01), Bodine
patent: 3114566 (1963-12-01), Coberly et al.
patent: 3149861 (1964-09-01), Larsson
patent: 3322217 (1967-05-01), Cook
patent: 3482889 (1969-12-01), Cochran
patent: 3494640 (1970-02-01), Coberly et al.
patent: 3747700 (1973-07-01), Rilling
patent: 3820611 (1974-06-01), King

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