Determining fluid properties from fluid analyzer

Details Determining fluid properties from fluid analyzer Determining fluid properties from fluid analyzer

G - Physics

01

N

G01N 21/31 (2006.01) E21B 49/08 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2461933

A method for determining properties of a formation fluid including obtaining data related to an optical density at a methane peak and an optical density at an oil peak for a fluid sample at a plurality of times, calculating an apparent gas-oil-ratio of the sample fluid from the optical density of the fluid sample at the methane peak to the optical density of the fluid sample at the oil peak at each of the plurality of times based on the data, selecting a power function of a sampling parameter for a buildup of the apparent gas-oil-ratio, calculating an exponential constant of the power function based on the data, and determining at least one selected from the group consisting of a contamination free gas-oil-ratio and a percent contamination.

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