Measurement of non-aqueous phase liquid flow in porous media...

Details Measurement of non-aqueous phase liquid flow in porous media... Measurement of non-aqueous phase liquid flow in porous media...

2007-10-16

2007-10-16

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring tracer concentration

C073S861950

Reexamination Certificate

active

11283055

ABSTRACT:
A method and apparatus for measuring in situ flow of non-aqueous phase liquids (NAPLs) through a porous medium is described. A tracer is introduced into a well or boring located in the medium and the tracer concentration in the well kept uniform by mixing. The rate at which the tracer is depleted from the well has been determined to be proportional to the flow rate of the NAPL through the well or boring and surrounding formation.

REFERENCES:
patent: 5062292 (1991-11-01), Kanba et al.
patent: 6427526 (2002-08-01), Davison et al.
patent: 7207228 (2007-04-01), Wang
Drost et al., “Point Dilution Methods of Investigating Ground Water Flow by Means of Radioisotopes,” 1968, pp. 125-146, vol. 4, No. 1, Water Resources Research, US.
Freeze, R. Allan et al., “Groundwater,” 1979, pp. 426-429, Prentice-Hall, Inc., Englewood Cliffs, New Jersey. US.
Taylor, Geoffrey Ryan, Thesis “Direct Measurement of LNAPL Flow in Porous Media Via Tracer Dilutions,” Colorado State University, Fort Collins, CO. US; made available to the public in Dec. 2004.

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