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Supercritical CO2 displacement of high-viscosity oil in a wide range of thermobaric conditions

Authors: A.V. Radaev, N.R. Batrakov, I.A. Kondratyev, A.A. Mukhamadiev, A.N. Sabirzyanov (Kazan State University of Technology)
An experimental setup, allowing to carry out a study of the process of oil displacement in a wide range of thermobaric, geological, physical and chemical conditions in the reservoir and operation parameters of the displacing agent, is created. Experiments on the displacement of transformer oil from the reservoir model by supercritical carbon dioxide in the temperature range 313-353 K, pressure - 7-12 MPa are executed. It is shown, that a temperature increase leads to a significant reduction in oil recovery ratio at pressures above the critical value.
An experimental setup, allowing to carry out a study of the process of oil displacement in a wide range of thermobaric, geological, physical and chemical conditions in the reservoir and operation parameters of the displacing agent, is created. Experiments on the displacement of transformer oil from the reservoir model by supercritical carbon dioxide in the temperature range 313-353 K, pressure - 7-12 MPa are executed. It is shown, that a temperature increase leads to a significant reduction in oil recovery ratio at pressures above the critical value.


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