Water flooding technique is found in intensive applications to improve oil recovery worldwide, and of course, it depends on the injection of low-salinity water to enhance oil recovery compared to high-salinity water injection. This technology has attracted the industry’s interest because of its simplicity and low cost.

Dear all, water flooding is decided by the residual oil in place (After the primary recovery) and the limit is the occurence of the fingering phenomenon, which is noticed when the amount of water getting out from the production well(s) becomes important. The degree of salinity of injected water is also function of the operating parameters and the composition of the field. My Regards

Abdelkader BOUAZIZ and Hadi Salman Al-Lami

Thank you so much for your reply. But your answers are way too general and it is not what I am looking for it. What I want to know is a specific question, "Which type of interactions should be adjusteded first? Fluid-fluid or rock-fluid? "

Dear all, for optimum Processing both should be treated, but since it is still water flooding, fluid-fluid is of primary importance mainly for prolonged Time injection and production (economic aspect), fluid-rock becomes the primary important when surfactants or polymers solutions are applied for tertiary enhanced oil recovery. My Regards

I agree with Hadi S Al-Lami

Abdelkader BOUAZIZ Thank you so much for your note. It was useful.

I appreciate that, it was a useful note and discussion

I am glade to hear that.

Dear Alireza,

To answer this question, Let s have a check on the description of wettability : Wettability is described as the tendency (ability) of a fluid to spread on a solid surface when the solid surface and the fluid itself is in contact with another immiscible fluid. In general, when we are sure that the fluids are immiscible, then we have to start with the choice of the solid surface. Rock/fluid interaction will be a good start and it also will g've you an idea about the fluid/fluid interaction, too.

Celal Hakan Canbaz Thank you so much for your note.

I think the rock/fluid interaction will play a dominant role in LSWF. consider a case that you investigated fluid/fluid interaction. It might go well but at the end, while evaluating oil recovery it might not produce the desired results since you have not considered the rock/fluid interaction, and also LSWF is very sensitive to its mineralogy. Both carbonate and sandstone have significant differences in their mineranolgy. so, I will suggest to first evaluate rock/fluid interaction and then go for fluid/fluid interaction. sometimes it also happens that your fluid/fluid interaction data will not be in coherence with rock/fluid data so you have to decide accordingly.

Hope this might help you.

Rohit Kumar Saw Thank you so much, it was a really useful point of view.