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Abstract

Summary

In recent years, electromagnetic heating (EMH) has been the focus of ever-increasing theoretical and experimental studies both in the laboratory and field scale to examine if it can be used to heat up the geomaterials in field scale. EM-solvent based bitumen recovery methods, such as ESEIEH pilot in Athabasca oil field, mainly use radiofrequency waves to generate heat in reservoir, and thereby reduce the viscosity of the bitumen to mobilize it.

EM wave propagation in a reservoir poses a coupled multi-physical process that involves not only the heat transfer and fluid flow, but also EM field distribution, which currently, a non-coupled approach is followed by industry using a conventional thermal simulator and an external electromagnetic wave solver where both are linked through an interface. To address the mentioned issues, the present study presents a coupled compositional numerical modeling approach to explore the EM heating phenomena pertinent to fluid flow in oil sand reservoirs. Generic field equations governing the coupling between energy equation and EM wave propagation are derived using the Maxwell’s equations.

The developed in-house numerical simulator is used to study the importance of EM-induced volumetric heat generation in a multiphasic heterogeneous oil sand reservoir. Results reveals that electromagnetic heating can be a promising method for the development of low quality oil sands. EMH moderates the amount of needed energy and also cuts the emitted CO2 compare to SAGD process. Furthermore, the operating temperature of vapor chamber is less than 160 °C for the optimized EM-solvent scenario, while it is more than 220 °C for the SAGD method.

We presented a coupled approach for modeling of electromagnetic heating of oil sands. The developed model can be used as a toolbox to perform sensitivity analysis, design of experimental setups and pilot scale implementation of electromagnetic heating of oil sands.

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/content/papers/10.3997/2214-4609.201802131
2018-09-03
2024-04-27

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Numerical Modelling Of Electromagnetic-Based Hybrid Eor Techniques For Bitumen Recovery
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201802131
/content/papers/10.3997/2214-4609.201802131
/content/papers/10.3997/2214-4609.201802131
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