Quantitative interpretation of the data of thermohydrodynamic studies of wells with multiphase flows

UDK: 622.276:532.685
DOI: 10.24887/0028-2448-2022-3-61-65
Key words: temperature logging, capacitance gauge, multiphase flow, phase flow rates
Authors: R.A. Valiullin (Bashkir State University, RF, Ufa), R.F. Sharafutdinov (Bashkir State University, RF, Ufa), A.Sh. Ramazanov (Bashkir State University, RF, Ufa), T.R. Khabirov (Bashkir State University, RF, Ufa), V.V. Bajenov (TNG-Group LLC, RF, Bugulma), A.I. Imaev (TNG-Group LLC, RF, Bugulma), O.R. Privalova (Bashkir State University, RF, Ufa; RN-BashNIPIneft LLC, RF, Ufa)

The paper considers issues related to the assessment of phase flow rates based on hermohydrodynamic studies of horizontal wells using mathematical modeling of multiphase flow in the well and the reservoir. To increase the productivity of hydrocarbon fields and to solve oilfield problems, it is necessary to take into account the multiphase flow in the wellbore, in particular, to determine the flow characteristics of the phases. That is why much attention has been paid to the study of multiphase flows in production wells recently. The holdups determined by compositional methods, the average volumetric flow rate measured by a spinner, as well as the hydrodynamic model of the flow in the well, make it possible to determine the flow rates of each phase. However, the quality of the data recorded by spinner, especially in low-rate wells, does not always allow their use. Adding a temperature field to the analysis enables unambiguously solution of the phase flow rates determination problem in the absence of data from a spinner. At the same time, for the quantitative interpretation of temperature measurements, a mathematical model of thermal processes in the well and the reservoir is required. Thermohydrodynamic studies interpretation includes a solving of the inverse problem. Thus, in addition to mathematical models, an optimization algorithm is required. The evolution and genetic optimization methods work quite well for the above tasks.


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