Shock tool for use in directional drilling

Details Shock tool for use in directional drilling Shock tool for use in directional drilling

1997-06-20

1999-10-12

Graysay, Tamara

Boring or penetrating the earth

With tool shaft detail

Axially telescoping shaft section

175 92, E21B 1707

Patent

active

059643072

ABSTRACT:
A shock tool includes a first tubular member, a second tubular member and a third tubular member. The first tubular member has an interior bore that extends between a first end and a second end. The second tubular member has an interior bore that extends between a first end and an attachment end. The second tubular member is rotatably supported by both radial and thrust bearings within the interior bore of the first tubular member with the attachment end protruding from the second end of the first tubular member. The third tubular member has an interior bore that extends between a connection end and a second end. The second end of the third tubular member being telescopically received within the interior bore at the first end of the second tubular member with the connection end protruding. The third tubular member is capable of limited reciprocal movement relative to the second tubular member. Shock absorbing medium is disposed between the third tubular member and the second tubular member. This shock tool has the ability to bear radial and thrust loads, in addition to shock loading.

REFERENCES:
patent: 4194582 (1980-03-01), Ostertag
patent: 5133419 (1992-07-01), Barrington

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