Vn. Matveenko et al., MECHANISM OF DROPLET DETACHMENT FROM ROCK IN THE PROCESS OF OIL DISPLACEMENT BY NONIONIC SURFACTANT SOLUTIONS IN POROUS-MEDIA, Colloids and surfaces. A, Physicochemical and engineering aspects, 104(1), 1995, pp. 1-6
We investigated octane and oil displacement from hydrophilic and hydro
phobic quartz sand packs of high porosity by low-concentration aqueous
surfactant solutions. A relationship between the oil recovery coeffic
ient and the surface parameters of the system studied was established.
An energetic approach to the description of the displacement process
was proposed, taking into account the processes of detachment of oil d
roplets (or films) from the rock surface, the break-up of the droplets
and the action of capillary forces.