A Study of Fluid displacement in Porous
Medium using Nitrogen/CO2 injection
EGEE 520: Spring 2008
Instructor: Dr. Derek Elsworth
By:
Sylvain-Didier Kouame
Overview







I- Introduction
II- Background
III- Problem Statement
IV- Simulation
V- Results and Validation
VI- Parametric Study
VII-Conclusion
I- Introduction
 Fluid flow in porous Medium
 Enhanced Oil Recovery
 Hydrogeology
Figure 1: CO2 and Water Flow Through Porous
II- Background
Governing Equations:
Darcy’s Equation
Figure2: Darcy's experiment
III- Statement of the Problem
Formulation:
* Optimize fluid (oil) displacement in a porous space by injecting, CO2 which is
miscible in oil and nitrogen immiscible in oil.
- Rock Properties
Miscible/Immiscible
-Oil Properties
100% N2
0% CO2
- Injected Gases
0% N2
100% CO2
IV- Simulation (CMG)
Figure1: Relative Permeability Curve
Figure1: 3-D View Of Core Sample
V- Results
VI- Parametric Study and Validation
A vertical sand column of length L = 120cm
Cross-sectional area A = 1 cm2
The difference between water levels at the inflow
and the outflow reservoirs is Dh = 120 cm
The hydraulic conductivity K = 20 cm3/min
Parametric Study and Validation
- Injected Fluids
.Water
.Water Saturation 100%
.Oil Saturation 0%
.Injection Rate 20 cm3/min
-Fluids Produced
.Water
.Produced Water 100%
.Produced Oil 0%
.Production Rate 20 cm3/min
Figure1: 3-D View Of Core Sample
VII- Conclusions
-Nitrogen and Carbon could be used simultaneously to
improve fluid displacement.
Optimum recovery level, only a very small amount of the
second gas should be added to the initial gas which should
also is the main gas injected.
-