METHOD FOR DETERMINING WATER CUT IN OIL WELL PRODUCTION Russian patent published in 2023 - IPC E21B47/10 G01F23/22 G01F23/30 

FIELD: oil and gas industry.

SUBSTANCE: used in determining water cut in oil well production samples. A method is proposed for determining the water cut of oil well production, which includes supplying the product through the input line into a measuring chamber to measure product parameters, analyzing these parameters with determining the water cut, and cyclically discharging the product into the flow line. Product samples are preliminarily maintained in laboratory conditions with the determination of the production time to obtain stable levels of oil and water, as well as the volume and water cut of the intermediate layer, on the basis of which a correction factor is determined for the water cut of the product obtained by measuring oil and water levels. A vertical container in the form of a regular prism or cylinder, equipped with water and oil level meters, is used as a measuring chamber. The supply of products through the inlet line is carried out periodically simultaneously with the discharge of products through the flow line by pumping 2-4 volumes of the measuring chamber to completely replace the products in the measuring chamber. As parameters, the water and oil levels are measured after process holding for a process time; the resulting product water cut in the form of the ratio of water and oil levels is multiplied by a correction factor to reduce the measurement error.

EFFECT: increase in the overhaul period and increase in measurement accuracy.

2 cl, 1 dwg