Movable joint bent sub
AssigneeCamco International Inc.
InventorsRonald E. Pringle, Arthur J. Morris
Life of this patent
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Abstract
A movable joint bent sub for attachment to a well conduit for use in deviated drilling of a well. An elongated housing is provided having one end for attachment to a well conduit, a mandrel is telescopically movable in the bore of the housing, and a movable body is pivotally connected to the mandrel and is longitudinally movable in the housing. Coacting cam surfaces on the body in the housing pivot the body to a desired deviation when the mandrel is telescopically moved in the bore. A releasable lock may be provided between the mandrel and the housing.
Claims13
A movable joint bent sub for attachment in a well conduit for use in deviated drilling of a well comprising,
- an elongate housing having a bore therein and having first and second ends, the first end having connecting means for attachment in a well conduit,
- a mandrel telescopically movable in the bore,
- a movable body having first and second ends, said first end of said movable body having connecting means for attachment in the well conduit, said second end of said movable body pivotally connected to the mandrel and slidable into the second end of the housing, and
- coacting cam surfaces on the body and the housing for pivoting the second end of the body when the mandrel is telescopically moved in the bore.
Dependencies are inferred from the claim text.