Apparatus for analysis and control of a reciprocating pump...

F - Mech Eng,Light,Heat,Weapons – 04 – B

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F04B 49/00 (2006.01) F04B 47/02 (2006.01) F04B 49/06 (2006.01)

Patent

CA 2742270

An instrumentation system for assessing operation of a re-ciprocating pump system which produces hydrocarbons from a non- vertical or a vertical wellbore. The instrumentation system periodically pro-duces a downhole pump card as a function of a directly or indirectly mea-sured surface card and a friction law function from a wave equation which describes the linear vibrations in a long slender rod. A control signal or command signal is generated based on characteristics of the downhole pump card for controlling the pumping system. It also generates a pump and well analysis report that is useful for a pump operation and determina-tion of its condition.

Linvention concerne un système dinstrumentation permettant d'évaluer le fonctionnement d'un système de pompe alternative qui produit des hydrocarbures à partir d'un puits de forage vertical ou non vertical. Le système d'instrumentation produit périodiquement une carte de pompe de fond de trou en fonction d'une carte de surface mesurée directement ou indirectement et dune loi de friction à partir d'une équation d'onde qui décrit les vibrations linéaires dans une tige longue et fine. Un signal de contrôle ou un signal de commande est généré sur la base des caractéristiques de la carte de pompe de fond de trou pour la commande du système de pompage. Un rapport d'analyse de pompe et de puits utile pour le fonctionnement d'une pompe et pour la détermination de son état est également généré.

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