A quartz suspension is considered a most stable system that leads to the destruction of rocks and the accompanying removal of sand from the reservoir, lowering the productivity of wells, and in complicated situations to their full stop in the development of oil fields­ ­composed of unconsolidated sandstone. To solve this problem, the number of ways was tested, a significant disadvantage which is to reduce the permeability of the rock. In ­this regard, in this work a new approach based on chemical regulation of the zeta potential was developed. The role of the zeta potential in the process of fluidization of quartz suspensions and the possibility of chemical control by acting on the aggregative stability of investigated disperse systems by reagent, the base component of which is the product of amine and phosphate esters reaction, have been studied. It has been shown that an aggregation of quartz by said chemical reagent is due to the decrease in the zeta potential, after reducing of thickness of diffuse part of the electrical double layer around the particles of silica. It was found that the chemical treatment of the quartz suspension contributes to a significant increase in the minimum fluidization velocity and fluid filtration coefficient. For the accounting the aggregation of quartz particles a correction to the equation Richardson – Zaki was offered.­ For an explanation of the filtration properties of the treated sand, a model that takes into account the effect of aggregation in a porosity of a medium was proposed. Fluidization process of untreated and chemically treated quartz sands was carried out on a special set up, with water at an average pressure of 0.01 MPa. Filtration coefficients of fluid flow before and after treatment of the porous medium is determined based on Darcy’s law. To determine the zeta potential, the method of streaming potential and the Helmholtz-Smoluchowski equation were used. The results can be used in the development of oil fields stacked unconsolidated sandstones.