scholarly journals TOGA: A TOUGH code for modeling three-phase, multi-component, and non-isothermal processes involved in CO2-based Enhanced Oil Recovery

2016 ◽  
Author(s):  
Lehua Pan ◽  
Curtis M. Oldenburg
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Three Phase ◽  
Isothermal Processes

scholarly journals Numerical Simulation of Three Phase Displacement Characteristics of Foam Fluid In Homogeneous Porous Media

2018 ◽  
Vol 7 (3) ◽  
pp. 141
Author(s):  
D.X Du ◽  
D. Zhang
Keyword(s):  
Porous Media ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Balance Model ◽  
Displacement Effect ◽  
Phase Displacement ◽  
Homogeneous Porous Media ◽  
Bubble Density ◽  
Three Phase ◽  
Water Gas

Foam technology has found wide applications in enhanced oil recovery and greenhouse geological storage. In this paper, a numerical simulate is carried out with the stochastic bubble population balance model on the foam three phase displacement process in a homogeneous oil/water/gas coexistence porous media of liquid. The effects of the maximum equilibrium bubble density nmax and the foam generation rate Kg on foam displacement process is mainly discussed. Numerical results indicate that the oil phase can be displaced well by foam fluid. Larger nmax values lead to higher apparent viscosity of foam and higher the pressure difference, and with the increase of Kg, the number of foam can reach a balance in a short distance, so it has better displacement effect on the oil phase components. The results obtained in this paper have a certain guiding role in understanding the enhanced oil recovery mechanism of foam fluid.

scholarly journals Study on three phase foam for Enhanced Oil Recovery in extra-low permeability reservoirs

2018 ◽  
Vol 73 ◽  
pp. 55 ◽  
Author(s):  
Ming Zhou ◽  
Juncheng Bu ◽  
Jie Wang ◽  
Xiao Guo ◽  
Jie Huang ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Foam Stability ◽  
Temperature Tolerance ◽  
Resistance Coefficient ◽  
Low Permeability ◽  
Displacement Efficiency ◽  
Three Phase ◽  
Profile Control ◽  
Low Permeability Reservoirs

Poly (MSt-MMA) nanosphere as foam stabilizing agent was synthesized by emulsion polymerization. The three phase foam was prepared with Disodium 4-Dodecyl-2,4′-Oxydiben Zenesulfonate (DOZS) as foaming agent, Hydrolyzed Polyacrylamide (HPAM) and synthesized poly (MSt-MMA) nanospheres as the mixed foam stabilizing agents. It had outstanding foaming performance and foam stability. The optimal three phase foam system consisting of 0.12 wt% HPAM, 0.04 wt% poly (MSt-MMA) nanospheres and 0.12 wt% DOZS by orthogonal experiment, had high apparent viscosity, which showed that three components had a very good synergistic effect. The three phase foam’s temperature tolerance and salt tolerance were researched in laboratory tests. Flooding oil experiment showed that the average displacement efficiency of three phase foam system was 16.1 wt% in single core experiments and 21.7 wt% in double core experiments. Resistance coefficient of low permeability core was more than those of high permeability core, but their residual resistance coefficients were small. The results of core experiment and pilot test indicated that the three phase foam had good profile control ability and generated low damage to the low permeability layer for extra-low permeability reservoirs. Three phase foam flooding has great prospects for Enhanced Oil Recovery (EOR) in extra-low permeability reservoirs.

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