Method and apparatus to facilitate formation sampling

E - Fixed Constructions – 21 – B

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E21B 49/10 (2006.01) G01V 3/32 (2006.01) E21B 47/10 (2006.01)

Patent

CA 2714501

A downhole tool for extracting a sample from a subsurface formation includes an emitter of electromagnetic energy configured to heat water in the subsurface formation. A method for extracting a sample from a subsurface formation involves conveying a downhole tool in a wellbore drilled through the subsurface formation, the downhole tool having an emitter of electromagnetic energy configured to heat water in the subsurface formation, and actuating the emitter to expose a portion of the formation to electromagnetic energy.

L'invention concerne un outil de fond de trou pour extraire un échantillon à partir d'une formation sous la surface, lequel outil comprend un émetteur d'énergie électromagnétique configuré de façon à chauffer de l'eau dans la formation sous la surface. L'invention porte également sur un procédé pour extraire un échantillon à partir d'une formation sous la surface, qui met en jeu le transport d'un outil de fond du trou dans un puits de forage foré à travers la formation sous la surface, l'outil de fond de trou comportant un émetteur d'énergie électromagnétique configuré de façon à chauffer de l'eau dans la formation sous la surface, et l'actionnement de l'émetteur pour exposer une partie de la formation à de l'énergie électromagnétique.

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