FIELD: drilling.
SUBSTANCE: method for quantitative determination of additives to drilling fluid includes circulation of drilling fluid in well shaft, passing the wellbore into one or more subterranean formations simultaneously with circulation of the drilling fluid, wherein the drilling fluid contains chemically marked additives to the drilling fluid, and chemically marked additives to drilling fluid are each independently marked with different fluorophores, where each fluorophore emits different wavelength of light, and where chemically marked additives to drilling fluid each contain different additive to drilling fluid.
EFFECT: technical result is accurate quantitative determination of content of several additives to drilling fluid without distortion.
21 cl, 5 dwg
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