Downhole sampling apparatus and method for using same

Details Downhole sampling apparatus and method for using same Downhole sampling apparatus and method for using same

E - Fixed Constructions

21

B

E21B 49/08 (2006.01) E21B 49/10 (2006.01)

Patent

CA 2626136

A reservoir sampling apparatus (20) is described having at least one probe (26) adapted to provide a fluid flow path between a formation and the inner of the apparatus with the flow path being sealed from direct flow of fluids from the borehole annulus with a heating projector (251) adapted to project heat into the formation surrounding the probe and a controller (253) to maintain the temperature in the formation below a threshold value .

Selon l'invention, un appareil d'échantillonnage à réservoir (20) comprend, d'une part, au moins une sonde (26) conçue pour engendrer une voie d'écoulement de fluide entre une formation et l'intérieur dudit appareil, ladite voie d'écoulement étant fermée hermétiquement à l'écoulement direct de fluides provenant de l'espace annulaire du puits avec un projecteur chauffant (251) élaboré pour projeter de la chaleur dans la formation entourant la sonde et, d'autre part, un dispositif de régulation (253) servant à maintenir la température dans la formation en dessous d'une valeur seuil.

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