Directional drilling

Details Directional drilling Directional drilling

1982-07-16

1986-04-15

Novosad, Stephen J.

Boring or penetrating the earth

With seismic shock generating

175 45, 175 45, 175 61, E21B 4712

Patent

active

045821470

ABSTRACT:
A system for directional drilling of boreholes into the earth under control of the driller at the surface, employing a rotating earth drill including a projectile firing mechanism, that is timed to nonsymmetrically fire projectiles into the earth at controlled angular positions that are offset from the axis of the drill and drill string in the desired direction of drilling.

REFERENCES:
patent: 1811648 (1931-06-01), Rosaire
patent: 3633686 (1972-01-01), Bennet
patent: 3817345 (1983-06-01), Bailey
patent: 3876016 (1975-04-01), Stinson
patent: 4004642 (1977-01-01), Dardick
patent: 4030557 (1977-06-01), Alvis et al.

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