The method of regular temperature labels in measuring phase flow rates in low-flow horizontal wells

Abstract

This article presents the results of experimental studies of the applicability and range of consumption parameters of the heat tag method for solving practical problems in a horizontal well where an induction heater was used as a heat source. The research was carried out on the certified thermohydrodynamic stand of BSU and in the laboratory of thermometry. The results of the study showed that the method can be applied in a single-phase and two-phase stratified flow with an error of no more than 8%. It was found that the shape and type of the source of the artificial thermoanomaly does not affect the results of measuring local flow rates with an output of the total flow rate. The results of the work defined threshold flow rate (100 m3/day water or light oil for a column of diameter D = 4 ½ꞌꞌ) using an inductor of limited power (P ≈ 1 kW), as well as the requirements to configuration of downhole instruments, providing the possibility of estimating the interval of the phase costs in marginal horizontal wells. The motion front and the evolution of the heat mark along the length of the stand for a stratified horizontal (sub-horizontal) flow consisting of hydraulic oil and process water are demonstrated.