Water Flooding remains the primary method of oil recovery, but typical recovery is 20% to 50% of
the original oil in place. The oil remaining after water flood is a resource for various EOR techniques.
Enhanced Oil Recovery is oil recovery by the injection of materials not normally present in the reservoir
and the measurement of EOR Process is the difference in the oil actually produced versus the amount of
oil projected to be produced had the EOR process not been initiated.
Environmental Condition Unit for Enhanced Oil Recovery Testing.
A process in which heat is intentionally injected into a subsurface accumulation of organic compounds
for the general purpose of improving the displacement and recovery efficiencies of those hydrocarbons.
Thermal recovery processes are usually targeted towards viscous crudes, coals and oil shales.
Data Depicting Residual Oil Saturation after Water Drive and then after Steam Drive.
Cumulative Yield as a Function of the Distillation of Crude oil at Various Temperatures.
Example of Viscosity Reduction Due to Increasing Temperature on a 15° API Middle East Oil.
Cartoon Depicting Reducing Oil Saturation Due to Multiple Cycles of Water and Gas Injection (WAG)
Variations in Oil Recovery Due to Changes in Oil/Water Viscosity Ratio
Oil Recovery Fraction as a Function of Surfactant Concentration