Method for directional drilling

Details Method for directional drilling Method for directional drilling

1997-03-25

1999-08-17

Schoeppel, Roger

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175 73, 175 91, 175221, E21B 704

Patent

active

059379545

ABSTRACT:
In a method for directional drilling with the aid of a drilling device having a drill pipe and a mining tool which moves on an orbit, the tool moves at an essentially constant angular velocity during straight drilling and the angular velocity is periodically changed during curved drilling, in order to thus create a smooth transition from straight drilling to curved drilling and to achieve more precise curve control.

REFERENCES:
patent: Re33793 (1992-01-01), Cherrington et al.
patent: 2324102 (1943-07-01), Miller et al.
patent: 2707616 (1955-05-01), Schad et al.
patent: 3878903 (1975-04-01), Cherrington
patent: 4307786 (1981-12-01), Evans
patent: 4995465 (1991-02-01), Beck et al.

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