METHOD OF DETERMINING PARAMETERS OF BOREHOLE FLOW AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2016 - IPC G01F1/66 

FIELD: measuring equipment.

SUBSTANCE: present invention relates to methods and devices for studying mixed flow of gas, liquid and solid particles. Gas and liquid can be represented by water, steam and different fractions of hydrocarbons. Application field of proposed technical solution is oil and gas industry. Method of determining parameters of downhole multiphase multicomponent flow involves passing through optical signal in the wavelength range from 850 to 2,000 nm, registration of signal after its interaction with the flow and computer processing of obtained results. Signal is transmitted on at least two different wavelengths, preliminarily dividing it on optical divider into two parts, one of which is the reference, parallel recording of reference signal is performed, and obtained results processing is carried out on the basis of comparison of both signal intensity and phase. In disclosed method processing obtained results is possible to carry out on the basis of calculating flow components speed, obtaining holographic pattern of flow. Device for determining parameters of downhole multiphase multicomponent flow contains measuring chamber in form of pipe, as well as additionally contains at least one source of optical signal, at least one optical signal detector arranged with its source on same axis, optical divider, optical system for delivery of reference signal to detector in bypass of measuring chamber and processing unit, wherein source and detector are separated by walls of measuring chamber, made from material transparent for optical signal.

EFFECT: technical result is possibility of determination of concentration of different phases of multi-phase flow in investigated area, construction of spatial distribution of fluids in investigated area, evaluation of dynamics of movement and obtaining data on volume fraction of flow components.

4 cl, 2 dwg