Method of measuring flow velocities using tracer techniques

Details Method of measuring flow velocities using tracer techniques Method of measuring flow velocities using tracer techniques

G - Physics

01

P

G01P 5/18 (2006.01) G01F 1/708 (2006.01) G01F 1/74 (2006.01)

Patent

CA 2152254

A method of measuring flow velocities in flowing fluids comprises injecting into the flow a non-radioactive tracer having a neutron capture cross section higher than that of the flowing fluids, for example a gadolinium compound, and measuring the neutron capture cross section in the fluid downstream of the injection point to detect the passage of the tracer and hence determine the time of flight. By making the tracer miscible with only one phase (typically the continuous phase) of a multi-phase fluid, it is possible to measure the flow velocity of that phase. The neutron capture cross section can be measured by irradiating with neutrons from a pulsed neutron generator and measuring capture y rays with a scintillation detector.

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