METHOD FOR SEPARATE DETERMINATION OF OIL AND GAS CONDENSATE CONTENT IN OIL AND GAS CONDENSATE WELLS PRODUCTION Russian patent published in 2019 - IPC E21B47/00 G01N21/3577 

FIELD: chemistry.

SUBSTANCE: invention relates to investigation of composition of liquid hydrocarbon products and method of determining mass fractions of oil and gas condensate in products of oil and gas condensate wells. Method is realized by high-resolution infrared Fourier spectrometer by PLS method and involves sampling and spectrum measurement of its integral optical density in range of 4000 cm^-1 – 500 cm^-1 in optical trays with thickness of 1.5–2.5 mm. Content of oil and gas condensate is determined from spectra of the first derivative of spectra of integral optical density from a calibration model generated from spectra of the first derivative of spectra of integral optical density of calibration solutions, measured in the same cuvettes. Selection of regions for creation of calibration model is carried out on such sections of wave numbers, where spectra of 1^st derivative of optical density of calibration solutions do not intersect.

EFFECT: technical result consists in improvement of reliability of analysis of product composition.

1 cl, 7 dwg, 2 tbl