OPTIMIZATION OF THE MEASURING BASE OF THERMAL TAG FLOW METERS

Introduction. The article presents the results of experimental studies of the applicability of the method of regular thermal labels for solving practical problems in a horizontal well. According to the obtained results the estimation of the minimum and maximum gauge length between two adjacent control points of Terminalia. The results of the study showed that the method can be applied in a single-phase and two-phase stratified flow. Materials and methods of the research. The research was carried out on a certiied thermohydrodynamic stand of Bashkir State University, using low-inertia temperature sensors (K-type thermocouples). Greater measurement accuracy is achieved by accumulating a sufficient amount of laboratory data and pre-calibration of measuring instruments. Research methods consist in generalization and analysis of the recorded information, study of analytical dependencies of hydrodynamic parameters of the luid inside the horizontal well bore. The results of the study and their discussion. The evolution of an artificially generated heat label along a horizontal/ subhorizontal low is experimentally investigated. The work was carried out in conditions of single-phase and two-phase fluid flow. The algorithm of data processing for constructing distribution curves of the flow profile with output to the total low rate has been developed. The calculated gradient of the decay of Terminalia in the process of its promotion. Analytically and experimentally selected the maximum and minimum permissible ranges of the measuring base of the label flow meter, depending on the speed (flow rate) of the liquid flow. Conclusions. Based on the results of the research, the principal possibility of using the method of regular temperature labels in the conditions of a single-two-phase stratiied luid low is shown. The main dificulty in calculating the recorded data is determining the level of water-oil (oil) contact (Hold Up) in a horizontal stratified flow. In addition, the effect of thermogravitational stratification inside each liquid adds to the complexity of measurement. It is experimentally conirmed that increasing the measurement base leads to an increase in measurement accuracy, but adds complexity to data processing, due to a non-constant level of movement along the length of the stand and an uneven proile of the speed front. The requirements for the coniguration of downhole equipment that provides the ability to assess the point-to-point phase low in low-low horizontal wells are also outlined. Due to the subjective factor in the analysis and processing of recorded data, for the successful operation of the method, the "run" time of thermoanomaly should not be less than 15 seconds.

horizontal wells, temperature tags, local speeds, development control

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