System and method for direct drive pump
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United States of America Patent
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Oct 18, 2016
Grant Date -
Dec 12, 2013
app pub date -
Aug 15, 2013
filing date -
Sep 2, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A direct drive pump employs an on-off tool to attach the drive rod string to a floating pump drive shaft in both torsion and tension. The downward thrust on the drive shaft, as well as the weight of the drive rod string, is born by a thrust bearing in the drivehead at the surface. A floater pump is used with this direct drive pump to permit the free vertical movement of the drive shaft. When a tandem direct drive pump is employed a housing containing a tandem pump drive shaft connector connects the shafts in an upper and lower tandem pump to permit the two to freely move in the tandem direct drive pump.
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