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Priority claimed from US13/442,379external-prioritypatent/US8668475B2/en
Application filed by UnicofiledCriticalUnico
Publication of MX2013000452ApublicationCriticalpatent/MX2013000452A/en
Publication of MX335980BpublicationCriticalpatent/MX335980B/en
An apparatus and method for pumping fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, include a linear rod pump having a mechanical rack and pinion drive arrangement, adapted for attachment to a pumping mechanism, such as the polished rod at the top of a rod string in a hydrocarbon well. The rack gear, of the rack and pinion drive arrangement, is adapted for connection to a cable and pulley arrangement for imparting motion to the polished rod. The pinion gear does not translate with the rack gear, and is driven by a reversible motor for affecting up and down reciprocating motion of the rack gear and pumping mechanism. Some forms of the invention include a compressible gas counter-balance arrangement. Some forms of the invention include an electronic drive configured for dealing with electric power generated by the motor during a portion of the pumping cycle.
MX2013000452A2012-04-092013-01-11Linear rod pump apparatus and method.
MX335980B
(en)
SYSTEM FOR THE EXTRACTION OF LIQUID MEDIA FROM A DRILLING WELL, AS WELL AS A PROCEDURE FOR THE INSTALLATION OF A CONFIGURED PUMP UNIT AS A EXCELLENT HELICAL PUMP IN A DRILLING WELL