Measuring inflow performance with a neutron logging tool

Details Measuring inflow performance with a neutron logging tool Measuring inflow performance with a neutron logging tool

G - Physics

01

V

G01V 5/10 (2006.01) G01F 1/74 (2006.01) G01P 5/00 (2006.01)

Patent

CA 2541800

A method for evaluating an inflow performance for completed intervals in a well includes pulsing neutrons into a fluid flow in the wellbore, detecting gamma rays from decays of nitrogen-16 in the well fluid flow with a first gamma ray detector, determining an in situ water velocity from the measurement of the gamma ray decays, and estimating the inflow performance of one or more competed intervals in the well from data that includes the in situ water velocity.

Méthode permettant d'évaluer l'efficacité du captage sur des intervalles définis dans un puits; la méthode consistant à appliquer des impulsions de neutrons dans un débit de fluide à l'intérieur du puits de forage, à détecter des rayons gamma issus de la désintégration de l'azote 16 dans le débit de fluide dans le puits à l'aide d'un premier détecteur de rayons gamma, à déterminer la vitesse de l'eau in situ à partir de la mesure de la décroissance radioactive, et à estimer l'efficacité du captage sur un ou plusieurs intervalles définis dans le puits d'après des données comprenant la vitesse de l'eau in situ.

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