Wells – Pistons – fluid driven into well
Patent
1993-06-21
1995-02-21
Neuder, William P.
Wells
Pistons, fluid driven into well
166156, 166192, E21B 3316
Patent
active
053907361
ABSTRACT:
An anti-rotation device for use in a well tool, for example a top plug or a bottom plug, has a tapered male member having a corrugated outer surface which can enter a corresponding recess in another well tool to inhibit relative rotation therebetween.
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McClung Guy
Neuder William P.
Weatherford / Lamb, Inc.
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