Roller stabilizer

Details Roller stabilizer Roller stabilizer

1998-04-09

2000-08-29

Lillis, Eileen Dunn

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

175324, 175337, 175345, 175348, E21B 1710

Patent

active

061093742

ABSTRACT:
An improved stabilizing tool includes a body with a pocket, and a roller rotatably disposed in the pocket. The body includes a fluid passageway formed axially therethrough. The passageway has a first zone wherein the pressure of the fluid is relatively high and a second zone wherein the pressure is relatively low. A first conduit provides fluid communication between the first zone and an interior of the roller for the ingress of fluid to the interior, and a second conduit provides fluid communication between the interior of the roller and the second zone for the egress of the fluid back to the fluid passageway.

REFERENCES:
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patent: 4231437 (1980-11-01), Swersky et al.
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patent: 4765417 (1988-08-01), Perkin et al.
patent: 4793425 (1988-12-01), White
patent: 5190379 (1993-03-01), White
patent: 5381868 (1995-01-01), Schock

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