发明名称 LOW PROFILE ROD PUMPING UNIT WITH PNEUMATIC COUNTERBALANCE FOR THE ACTIVE CONTROL OF THE ROD STRING
摘要 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.
申请公布号 CA2854557(A1) 申请公布日期 2013.05.16
申请号 CA20122854557 申请日期 2012.11.08
申请人 LUFKIN INDUSTRIES, INC. 发明人 DOYLE, DAVID
分类号 F04B47/02;E21B43/12;F04B47/04 主分类号 F04B47/02
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