PROCEDURE AND DEVICE FOR CALIBRATED SPECTRAL ANALYSIS OF FLUIDS IN WELL Russian patent published in 2011 - IPC G01J3/10 

FIELD: oil and gas production.

SUBSTANCE: system of fluid analysis designed for operation of well passing through bed consists of at least one source of light generating incoming light. Also, the system consists of a sample cell functionally connected to the said at least one source of light. It receives the fluid sample and additionally has at least one inlet orifice letting said light come into the said sample cell. When light passes through the fluid sample, the cell directs outlet light through at least one outlet orifice thus letting said outlet light come out from the said sample cell. Additionally, the system consists of at least the first spectrometre functionally connected to the outlet of the sample cell and designed to measure said outlet light and to generate multitude of measuring signals. The system is also equipped with an analysing device functionally connected to outputs of the said first spectrometre. This device is deigned to receive said multitude of measuring signals and to determine properties of the fluid sample. The system has at least the second spectrometre functionally connected to the said at least one source of light and designed for measurement of said incoming light and for generation of multitude of reference signals. The system is equipped with a calibrating device functionally connected to outputs of the said second spectrometre and designed for reception of said multitude reference signals and for calibration of the said first spectrometre and other electronics.

EFFECT: increased accuracy, and simultaneously detailed spectral analysis in investigated range.

14 cl, 7 dwg