Reservoir monitoring in a laminated reservoir using 4-d time...

G - Physics – 01 – N

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G01N 1/00 (2006.01) G01V 1/30 (2006.01) G01V 3/38 (2006.01) G01V 11/00 (2006.01)

Patent

CA 2474480

Time lapse seismic measurements of a laminated reservoir (401) including sands and shale are processed to determine changes in the laminated reservoir (403). An initial petrophysical model is obtained at a well bore from measurements made with a multi-component resistivity-logging tool (405). Changes in the amplitude versus offset behavior of the reflections from the top of the reservoir are indicative of changes in fluid saturation and/or formation pressure.

Des mesures sismiques, échelonnées dans le temps, d'un réservoir stratifié (401) comprenant des pierres stratifiées telles que des sables et des schistes sont traitées pour déterminer les changements qui se sont produits dans le réservoir stratifié (403). Un modèle pétrophysique initial est formé à partir des mesures effectuées au niveau d'un puits de forage, avec un instrument (405) de diagraphie à résistivité multicomposant. Des variations de l'amplitude par rapport au comportement décalé des réflexions depuis le haut du réservoir indiquent des changements de la saturation de fluide et/ou de la pression de la formation.

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