DEVELOPMENT OF COLLOIDAL SILICA NANOPARTICLES FOR FINES MIGRATION CONTROL

Formation damage due to fines migration is among the main cause for productivity decline. This occurs due to minerals dislodging when fluid flow beyond the critical velocity and by poor cementation after acid stimulation activities. Conventional chemical methods are widely used to prevent the fines migration, however, most of the chemical fines’ stabilizer are not robust which functionalize based on composition of exchangeable cations of fines minerals, temporary stabilization and are not environmentally friendly. This research work explored the potential of colloidal silica
nanoparticles (C-SNPs) as new solution to control fines migration at various reservoir conditions through an integrated quantitative and qualitative methods. The efficiency
of four commercial C-SNPs has been demonstrated via series of porous media testing. The most efficient organosilicasol, NPC-ST that generated the highest fines attachment
(60% to 70%) have been selected for high pressure high temperature core flooding tests. Different sets of Berea Buff sandstone cores were initially examined for permeability
impairment analysis at 30℃, 60℃, 80℃ and 95℃.