Drilling deviation control tool

Details Drilling deviation control tool Drilling deviation control tool

1986-10-30

1987-12-29

Novosad, Stephen J.

Boring or penetrating the earth

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

175325, 166241, E21B 1710

Patent

active

047154535

ABSTRACT:
A body, functioning as a length of drill string, has an eccentric roller mounted for rotation around the body. The roller and body have cooperating cam surfaces that cause the roller to reciprocate axially when the body rotates relative to the roller. In use, the extended radius of the eccentric roller engages the near side of the well bore walland tends to become stationary relative to earth. The forced axial motion of the retarded roller induces some peripheral motion at each turn of the drill string. The eccentric roller turns freely with the drill string when the extended radius is adjacent the far side of the well bore wall. The extended radius of the roller tends to spend most of the drilling time between the drill string and the near side, or low side, of the well bore to aid in well bore deviation control.

REFERENCES:
patent: 3484141 (1969-12-01), Collett
patent: 4102552 (1978-07-01), Kellner
patent: 4108256 (1978-08-01), Moore, III
patent: 4365678 (1982-12-01), Fitch
patent: 4372622 (1983-02-01), Cheeks
patent: 4440241 (1984-04-01), Anders
patent: 4606417 (1986-08-01), Webb et al.

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