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Patent Searching and Data


Title:
LOW PROFILE ROD PUMPING UNIT WITH PNEUMATIC COUNTERBALANCE FOR THE ACTIVE CONTROL OF THE ROD STRING
Document Type and Number:
WIPO Patent Application WO/2013/070979
Kind Code:
A3
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.

Inventors:
DOYLE DAVID (US)
Application Number:
US2012/064242
Publication Date:
July 04, 2013
Filing Date:
November 08, 2012
Export Citation:
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Assignee:
LUFKIN IND INC (US)
International Classes:
F04B47/02; E21B43/12; F04B47/04
Domestic Patent References:
WO2009052175A12009-04-23
Foreign References:
US2141703A1938-12-27
US5832727A1998-11-10
US20070286750A12007-12-13
US2432735A1947-12-16
US2526388A1950-10-17
Attorney, Agent or Firm:
RHODES, Monte (Three RiverwaySuite 90, Houston TX, US)
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