Investigation of the temperature field in gas condensate reservoirs taking into account thermodynamic effects

About the authors:

Ramil F. Sharafutdinov, Dr. Sci. (Phys.-Math.), Professor of the Department of Geophysics, Ufa University of Science and Technology, Ufa, Russia gframil@inbox.ru
Ildar V. Kanafin, Assistant, Department of Geophysics, Bashkir State University (Ufa); vradlik@gmail.com

Sabrina Boudjoghra, Postgraduate Student, Department of Geophysics, Ufa University of Science and Technology, Ufa, Russia sabrinaboudjoghra6@gmail.com

Abstract:

Based on modeling of non-isothermal filtration of a multiphase fluid, taking into account thermohydrodynamic effects and heat of condensation, the formation of a temperature field in a homogeneous porous medium at different pressures at the onset of condensation is studied. A numerical model of one-dimensional two-phase filtration taking into account the phase transition is obtained. Testing of the numerical solution was carried out on the basis of a well-known analytical solution for non-isothermal two-phase filtration in a reservoir taking into account mass transfer. The change in gas flow rate during condensate precipitation and the change in temperature over time on the well wall are considered. It is shown that, depending on the pressure of the onset of condensation (the radius of the onset of condensation in the formation), a different rate of formation of the temperature field in the formation is observed after the well is put into operation: the temperature anomaly can be positive, negative or inverse. The results of numerical experiments can be used when planning field studies in gas condensate wells.

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