Stabilizing tool for well drilling

Details Stabilizing tool for well drilling Stabilizing tool for well drilling

1987-06-24

1988-10-11

Novosad, Stephen J.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

166241, E21B 1710

Patent

active

047764104

ABSTRACT:
A drilling tool for use in drilling operations for providing shock absorption capability and lateral support to the rotary drill string. The telescoping axial load shock absorber is positioned immediately adjacent at least one lateral support provided by a reamer or stabilizer. The stabilizer preferably employs a removable fixed blade secured to the tool by an undercut groove. The roller cutter for a reamer is also mounted in a preferred unique manner with the mounting blocks secured in a recess having an undercut retainer portion in the event of bolting failure. The mounting's brackets may be formed integral of the tool body or attached by welding or the like. A preferred form of mounting a blade on a stabilizer tool is also disclosed.

REFERENCES:
patent: 1828750 (1931-10-01), Raymond
patent: 3370657 (1968-02-01), Antle
patent: 3680646 (1972-08-01), Hughes et al.
patent: 4000549 (1977-01-01), Brumley et al.
patent: 4231437 (1980-11-01), Swersky et al.
patent: 4583604 (1986-04-01), Greer

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