Wells – Expansible anchor or casing – Expansible means translated by wedge or cam
Patent
1992-02-14
1993-06-01
Britts, Ramon S.
Wells
Expansible anchor or casing
Expansible means translated by wedge or cam
166242, 277119, E21B 2300
Patent
active
052151450
ABSTRACT:
The preferred embodiment of the wedge-set sealing flap of the present invention includes a cylindrical mandrel disposed about a central longitudinal axis, the mandrel defining interior and exterior surfaces. At least one of the interior and exterior surfaces of the cylindrical mandrel at least in-part define a fluid flow passage. The mandrel further includes a radially-enlarged portion, and a radially-reduced portion. A cavity is disposed between the radially-enlarged portion and the radially-reduced portion. The cavity has a predetermined radial clearance. A wedge member is circumferentially disposed about the radially-reduced portion of the cylindrical mandrel in substantial axial alignment with the cavity, and slidably engaging the radially-reduced portion. The wedge member has a predetermined radial thickness which exceeds the predetermined radial clearance of a cavity by a preselected amount. The wellbore tool further includes means for selectively interference fitting the wedge member into the clearance to cause the radially-enlarged portion to grippingly and sealingly engage the wellbore surface of at least one wellbore tubular conduit.
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Baker Hughes Incorporated
Britts Ramon S.
Hunn Melvin A.
Tsay Frank S.
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