Wells – Expansible anchor or casing – Expansible means translated by wedge or cam
Patent
1997-08-13
1998-11-17
Dang, Hoang C.
Wells
Expansible anchor or casing
Expansible means translated by wedge or cam
E21B 2301
Patent
active
058363874
ABSTRACT:
The present invention discloses, in certain aspects, a system for securing and item in a tubular channel in a wellbore, the system having a lower body member, an upper body member, interconnecting apparatus for movably interconnecting the lower body member and the upper body member so that upon application of a downward force on the upper body member the upper body member moves downwardly in the second tubular effecting sideways movement of the lower body member so the lower body member contacts an interior surface of the tubular channel thereby wedging the lower body member and the upper body member in the tubular channel, the interconnecting apparatus having a connecting bar disposed partially in a first connecting bar groove in the lower body member and partially in a second connecting bar groove in the upper body member, and the connecting bar grooves and the connecting bar configured so that the connecting bar is movably held in the connecting bar grooves, and at least one pawl member having opposed pawl member ends and movably mounted on the connecting bar, and movable in response to an upward force on the upper body member so that one of the opposed pawl member ends contacts the lower body member and the other pawl member end contacts the upper body member forcing the two body members apart.
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Dang Hoang C.
McClung Guy
Weatherford / Lamb, Inc.
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