Reciprocating pumps for downhole deliquification systems and pistons for reciprocating pumps
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United States of America Patent
Stats
-
Jul 17, 2018
Grant Date -
Oct 22, 2015
app pub date -
Apr 15, 2015
filing date -
Apr 16, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A piston includes a piston housing and a decompression valve disposed in the piston housing. The decompression valve includes a valve housing seated in the piston housing and a valve member moveably received by the valve housing. The valve member has a radially outer surface including an annular shoulder. In addition, the piston includes an end cap secured to the first end of the piston housing. A radially inner surface of the end cap includes an annular valve seat. The decompression valve has a closed position with the annular shoulder of the valve member engaging the valve seat of the end cap and an open position with the annular shoulder of the valve member axially spaced from the valve seat of the end cap. The piston also includes a biasing member configured to bias the decompression valve to the closed position.
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