Orientable stabilizer

Details Orientable stabilizer Orientable stabilizer

1988-12-21

1993-01-19

Melius, Terry Lee

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Axially spaced opposed bore wall engaging guides

1753252, E21B 708

Patent

active

051800217

ABSTRACT:
The invention relates generally to rotary drilling equipment, and more particularly to stabilizers which are specifically adapted for use during directional drilling when only the drill bit is rotated using a down-hole motor, but which are also well suited for use during conventional drilling when the entire drill string is rotated. In a preferred embodiment, this is achieved by using three longitudinal ribs on the stabilizer body, one of which is displaced laterally in a down-hole direction and is radially oriented such that it contacts the low side of the borehole during directional drilling.

REFERENCES:
patent: 2819040 (1958-01-01), James et al.
patent: 3156310 (1964-11-01), Frisby
patent: 3276824 (1966-10-01), Carter
patent: 3933395 (1976-01-01), Evans
patent: 4059164 (1977-11-01), Farris
patent: 4220213 (1980-09-01), Hamilton
patent: 4384626 (1983-05-01), Derouin
patent: 4638873 (1987-01-01), Welborn
patent: 4667751 (1987-05-01), Geczy

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