METHOD FOR OBTAINING CALIBRATION SAMPLES OF PRODUCED WATER CONTAINING OIL AND MECHANICAL PARTICLES Russian patent published in 2023 - IPC G01N1/28 

FIELD: analytical chemistry.

SUBSTANCE: method for obtaining calibration samples of produced water containing oil and mechanical particles includes sampling of produced water, centrifuging it at a speed of 5-6 thousand rpm for 5-7 minutes, dividing it into three equal parts: upper, middle and lower; calibration samples containing oil and mechanical particles are obtained by mixing in selected proportions of sample volumes from thoroughly mixed upper, lower parts and distilled water; the concentration of oil and mechanical particles in the calibration samples is calculated as the arithmetic mean of 3-5 measurement results of these indicators by standard methods of analysis in two or more analytical laboratories, while rejecting erroneous measurement results that deviate up or down from the calculated concentration values by a given calibration samples.

EFFECT: increasing the reliability of the results of measuring the concentrations of oil and mechanical particles in calibration samples and the accuracy of measuring these indicators in produced water.

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