Method, program and computer system for scaling hydrocarbon...

Details Method, program and computer system for scaling hydrocarbon... Method, program and computer system for scaling hydrocarbon...

G - Physics

01

V

G01V 11/00 (2006.01)

Patent

CA 2692425

The method, programme and computer system for changing the scale of permeabilites for modelling a deposit (for example, hydrocarbon). Mini deposit models are defined (S100), with a number of patterns and cells within said patterns. For each model pattern, a scaling of the permeability values K H of the patterns is carried out (S400 - 800) by means of a mean factor formula (Formula I), connecting the permeability K H of the pattern to the local cell permeabilitesk Hi. According to the invention, the resulting factor coefficient .omega.H y is analytically modified with relation to the expression thereof given by the Noettinger-Haas equation in order to correct a non-ergodicity bias.

La présente invention concerne un procédé, un programme et un système informatique de changement d'échelle de perméabilités de modèle de réservoir (par exemple d'hydrocarbure). Des minis modèles de réservoirs sont définis (S100), avec un nombre de mailles et de cellules dans ces mailles. Pour chaque maille de modèle, un mise à l'échelle de valeurs de perméabilité K H de mailles est effectuée (S400 - 800) via une formule de moyenne en puissance (Formule I), liant la perméabilité K H de maille aux perméabilités k Hi locales des cellules. Selon l'invention, le coefficient de puissance? H y apparaissant est modifié analytiquement, par rapport à son expression donnée par la relation de Noettinger-Haas, pour corriger un biais de non ergodicité.

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