STUDY OF THE NANOPARTICLE POLYMER CACO3 INTERACTIONS TO OPTIMIZE THE STABILITY OF THE COLLOIDAL SUSPENSION AND THE PACKING OF THE SOLIDS
Nowadays, interest in nanotechnology in drilling and completion operations has increased to reduce the formation damage and improve the properties of the drilling fluids. In this way, this study aims to evaluate the effect of the SiO2 nanoparticles in a drill in fluid (polymer and calcium carbonate) to minimize its impact in the formation damage based on the filtration and thickness mudcake reduction through the interaction polymer/nanoparticle/calcium carbonate. Rheological behavior of the polymeric solution and the drilling fluid in absence and presence of nanoparticles were evaluated. Additionally, the static and dynamic filtration test was carried out under reservoir conditions. SiO2 nanoparticles exhibited an increase in the viscosity of the polymeric solution and drilling fluid due to and polymer adsorption onto nanoparticles surface. Drilling fluid with the addition of SiA nanoparticles reduced and stopped the filtration volume by 77% decreasing the formation damage by 51% and hence increased the permeability returns by 74% compared to the drilling fluid without nanoparticles.