Method and apparatus for subterranean formation flow imaging

Details Method and apparatus for subterranean formation flow imaging Method and apparatus for subterranean formation flow imaging

G - Physics

01

R

G01R 33/44 (2006.01) E21B 49/00 (2006.01) G01V 3/32 (2006.01)

Patent

CA 2465809

The present invention relates to a method and apparatus for measuring a property relating to fluid flow in an earth formation, more specifically to directly measuring formation permeability and other fluid characteristics. The present invention provides a method for determining the permeability of a hydrocarbon bearing earth formation, which method comprises the steps of: locating a tool at a selected position in a borehole penetrating the earth formation; including a flow of fluid within the earth formation to said tool; creating at least two MRI images of said fluid while flowing within the earth formation to said tool, said at least two images being created at different times; determining displacement of said fluid within the earth formation between said different times, using the at least two MRI images; and (e) determining the earth formation permeability from the displacement of said fluid.

L'invention concerne un procédé et un appareil servant à mesurer une propriété relative à un écoulement fluidique dans une formation terrestre, plus spécifiquement, à mesurer directement la perméabilité de la formation terrestre ainsi que d'autres caractéristiques fluidiques. L'invention concerne en outre un procédé qui permet de déterminer la perméabilité d'une formation terrestre chargée d'hydrocarbures qui consiste à: localiser un outil dans une position sélectionnée dans un trou de forage perforant la formation terrestre; introduire un écoulement de fluide dans la formation terrestre en direction dudit outil; prendre au moins deux images IRM dudit fluide en écoulement dans la formation terrestre en direction dudit outil, ces deux images étant saisies à des moments différents; déterminer le déplacement dudit fluide dans la formation terrestre entre ces intervalles de temps sur la base des deux images IRM au moins; et enfin, (e) déterminer la perméabilité de la formation terrestre à partir du déplacement du fluide en question.

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