Low profile rod pumping unit with pneumatic counterbalance for the active control of the rod string
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United States of America Patent
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Aug 25, 2015
Grant Date -
Nov 21, 2013
app pub date -
Nov 8, 2012
filing date -
Nov 8, 2011
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Abstract
Adaptable systems for a surface pumping unit that includes a low inertia pumping unit mechanism having a pneumatic counterbalance assembly are described, as well as methods for the use of such systems for subterranean fluid recovery. The system is capable of being integrated with well management automation systems, thereby allowing for response to active control commands, and automatically altering and/or maintaining a counterbalance force in the pumping unit by adding or removing air mass from a containment vessel associated with the pumping unit.
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