Apparatus and method for loading fluid into subterranean...

E - Fixed Constructions – 21 – B

Patent

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E21B 43/26 (2006.01) E21B 43/114 (2006.01)

Patent

CA 2229672

An apparatus for loading fluid into subterranean formations comprising a housing, a sleeve slidably disposed within the housing, a piston defining an interior volume, the piston slidably disposed within the sleeve and within the housing such that a fluid pressure within the interior volume causes the sleeve to oscillate relative to the housing and causes the piston to oscillate relative to the sleeve and the housing, and a pump which is operably associated with the piston such that the fluid pressure from the interior volume is intensified in the pump and injected into the formation as the piston oscillates relative to the housing.

Cette invention concerne un appareil servant à injecter du fluide dans une formation souterraine et comprenant un corps, un cylindre coulissant à l'intérieur dudit corps, un piston définissant un volume intérieur, ledit piston coulissant à l'intérieur du cylindre et à l'intérieur du corps, l'ensemble étant monté de façon que la pression de fluide à l'intérieur du volume susmentionné force le cylindre à osciller par rapport au corps et le piston par rapport au cylindre et au corps. Le tout est associé à une pompe de telle sorte que la pression à l'intérieur du volume défini par le piston soit augmentée par cette dernière et que le fluide soit injecté dans la formation souterraine lorsque le piston oscille par rapport au corps de l'appareil.

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