The studied algorithm has potential for use in earlier stages of design and planning for oil extraction.

In a column of porous material, if the porous medium has a more uniform grain size then the water saturation increases faster, but it does not necessarily improve the recovery factor.

Small differences in the porosity and in the grain size material, that is, the Brooks-Corey parameter in the capillary pressure, can lead to significant differences in the oil recovery factor.

In a column of porous material, small increase in water injection rate could result in a significant increase in the oil recovery factor on both upstream and downstream sides of the interface.

The water injection rate is an important control parameter, and significantly impacts the oil recovery factor and extraction times required.

The gravitational term exclusion from the mathematical model can lead to erroneous numerical estimates of oil recovery factor.