Well apparatuses and anti-rotation device for well apparatuses
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United States of America Patent
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Jun 25, 1991
Grant Date -
N/A
app pub date -
May 2, 1990
filing date -
May 2, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Well apparatuses with device for preventing their relative rotation with respect to adjacent well apparatuses and anti-rotation devices for well apparatuses, including, but not limited to, plugs, float shoes, float collars, jars, and clutch devices for packers. In one embodiment a non-rotation device has a main member with a recess on which are disposed a plurality of teeth with a load member adjacent the teeth for bearing a load put on the device and for isolating the teeth from the load, the teeth extending beyond the recess. In one embodiment the teeth are configured, disposed, and profiled to facilitate their interengagement with other teeth and to contain between them foreign objects which might impede proper interengagement. In various embodiments plugs are provided with such anti-rotation devices. In various embodiments the load member is a continuous circular ring disposed about the apparatuses outer periphery or around the opening of a channel through the device. The load members may be non-continuous upstanding members.
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