21st International Petroleum and Natural Gas Congress and Exibition of Türkiye, Ankara, Turkey, 27 - 29 September 2023, pp.325-328
The production of heavy
oil is challenging because of its higher viscosity and lower mobility. Although
thermal-based methods are useful to cope with these problems through heat
injection, the application of thermal recovery method are expensive and not
always effective methods. Therefore, different alternatives were considered
with respect to conditions of heavy oil reservoirs. Non-condensate gases like
flue gas injection are widely used in heavy oil recovery. The flue gas includes
approximately 80% N2 and 20% CO2. The flue gas injection
is an effective method for improving not only heavy oil recovery, but also
environmental issues. The flue gas injection was simulated as a dual porosity-
single permeability model with Eclipse compositional (e300) software. Numerical
study was carried out to investigate the effect of flue gas compositions on oil
production performance. The numerical results showed that high percentage of N2
in gas stream improves oil production cumulative, maintaining reservoir
pressure. These can be attributed to foam oil formation by N2
because of good expansibility of N2 compared to CO2 in low-permeability
oil reservoirs at the same conditions. The flue gas injection into oil
reservoirs not only enhances oil production performance, but also reduces CO2
emission by different industries