Downhole uses of piezoelectric motors

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

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F04B 17/03 (2006.01) E21B 49/08 (2006.01) F04B 49/06 (2006.01)

Patent

CA 2600032

A sampling system used in collecting samples of connate fluid from within hydrocarbon bearing formations. The sampling system comprises a sonde disposed within a wellbore formed proximate to the formation of interest. The sonde includes a sample probe insertable into the formation and a drawdown pump in fluid communication with the sample probe. The drawdown pump is motivated by an associated electrically responsive material, where the electrically responsive material can be comprised of a piezoelectric material, a electroactive polymer, or some other electrically responsive material.

L'invention concerne un système d'échantillonnage utilisé dans la récupération d'échantillons de fluide connés de formations de support d'hydrocarbures. Le système d'échantillonnage comprend une sonde disposée dans un trou de forage formé près de la formations d'intérêt. La sonde comprend une sonde d'échantillonnage pouvant être insérée dans la formation et une pompe abaissée en communication fluidique avec la sonde d'échantillonnage. La pompe abaissée est activée par un matériau sensible d'un point de vue électrique associé pouvant être formé d'un matériau piézoélectrique, d'un polymère électroactif ou d'un autre matériau sensible d'un point de vue électrique.

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