Self-balancing drilling assembly and apparatus

Details Self-balancing drilling assembly and apparatus Self-balancing drilling assembly and apparatus

1989-01-17

1990-03-06

Kisliuk, Bruce M.

Boring or penetrating the earth

Natural vibration characteristic of an element of boring...

175320, 74573R, 74573F, 74574, 408143, 464180, E21B 1700, F16F 1514, F16F 1516, B23B 4700

Patent

active

049057766

ABSTRACT:
A vibration dampening assembly, such as a dynamic balancing apparatus, is connected to a drill bit, a downhole motor or drillstring to exert a variable force to counteract vibration inducing forces. The dynamic balancing apparatus includes a support body which supports a plurality of freely movable masses so that the masses move to a position for opposing an imbalance force which rotates with, and at the same speed as, the drill bit, downhole motor or drillstring.

REFERENCES:
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patent: 3754835 (1973-08-01), Ivanov et al.
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patent: 4522271 (1985-06-01), Bodine et al.
patent: 4626144 (1986-12-01), Berner
patent: 4674356 (1987-06-01), Kilgore
patent: 4776436 (1988-10-01), Nenkov et al.

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