Progressing cavity pump rubber reinforcement device for rotor alignment
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United States of America Patent
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May 14, 2013
Grant Date -
May 5, 2011
app pub date -
Nov 3, 2009
filing date -
Nov 3, 2009
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Abstract
A progressing cavity pump assembly utilizes a reinforced upper section of the stator rubber helix. The pump stator is located at the end of a string of tubing. The reinforced upper section of the stator rubber helix is strong enough, whether reinforced by mechanical means or by strengthening the rubber matrix chemically, so as not to allow the passage of a stop located above or on the top of the pump rotor. The rotor is lowered on a string of rods until the stop above or on top of the rotor lands onto the reinforced upper section of the stator rubber helix. The rotor is then repositioned away from the stator helix a predetermined distance before pump operation begins with rod string rotation.
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