METHOD FOR DETERMINING PROFILE OF FLUID INFLUX IN MULTI-PAY WELL Russian patent published in 2018 - IPC E21B47/103 

FIELD: geophysics.

SUBSTANCE: invention relates to the field of geophysical studies of oil and gas wells, namely, to determining the profile of the influx of produced fluid in multi-pay wells with several perforation intervals. Method involves measurement of bottom-hole temperature and bottom-hole pressure in a well by means of sensors mounted on the perforation column below all perforation intervals, and also by means of temperature sensors mounted on the perforation column above each perforation interval. Bottom-hole temperature and pressure measurements are performed prior to well perforation and after perforation, until the temperature of the produced fluid does not return to the initial temperature of the formation. Total flow rate of the well is estimated and the excess heat energy of the produced fluid is calculated for all temperature sensors installed on the perforation column above the perforation intervals, after which the flow rate of individual perforation intervals is determined based on the calculated excess heat energy of the produced fluid and the known number of perforating charges in each perforation interval.

EFFECT: technical result consists in the improvement of the accuracy of determining the influx profile of the produced fluid in multi-pay wells with several perforation intervals.

1 cl, 5 dwg