OIL WELL POLISH ROD CLAMP FOR USE WITH A ROTATOR ON A BEAM PUMPING UNIT
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United States of America Patent
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N/A
Issued Date -
Mar 12, 2009
app pub date -
Sep 9, 2008
filing date -
Sep 12, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An oil well polish rod clamp includes unitary metallic cylindrical housing and a plurality of setscrews. A textured inner surface of the housing increases longitudinal gripping capacity on a rod rotated inside an oil well by a rod rotator and reciprocated by a beam pumping unit to actuate a downhole pump. The inner housing surface may include a plurality of axially short cylindrical portions with annular gaps between upper and lower portions to increase gripping pressure by reducing the contact area with the rod.
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