Evaluating the potential of surface-modified silica nanoparticles using internal olefin sulfonate for enhanced oil recovery

作     者：Afaque Ahmed Ismail Mohd Saaid Abdelazim Abbas Ahmed Rashidah M.Pilus Mirza Khurram Baig Afaque Ahmed;Ismail Mohd Saaid;Abdelazim Abbas Ahmed;Rashidah M.Pilus;Mirza Khurram Baig

作者机构：Petroleum Engineering DepartmentUniversiti Teknologi PETRONASSeri IskandarMalaysia Center of Research in Enhanced Oil RecoveryUniversiti Teknologi PETRONASSeri IskandarMalaysia Department of PhysicsUniversity of OkaraOkaraPunjabPakistan 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2020年第17卷第3期

页      面：722-733页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

主　　题：Silica nanoparticles Anionic surfactant Rheological properties of nano fluids Wettability alteration Enhanced oil recovery 

摘      要：Recently,nanoparticles have proven to enhance oil recovery on the core-flood scale in challenging high-pressure high-temperature *** generally appear to improve oil production through wettability alteration and reduction in interfacial tension between oil and water ***,they are environmentally friendly and cost-effective enhanced oil recovery *** the rheological properties of nanoparticles is critical for field *** instability of nanoparticle dispersion due to aggregation is considered as an unfavorable phenomenon in nanofluid flooding while conducting an EOR *** this study,wettability behavior and rheological properties of surface-treated silica nanoparticles using internal olefins sulfonates(IOS20–24 and IOS19–23),anionic surfactants were *** modification effect on the stability of the colloidal solution in porous media and oil recovery was *** rheology of pure and surfacetreated silica nanoparticles was investigated using a HPHT *** and particle size distributions of pure and coated silica nanoparticles were studied using a field emission scanning electron microscope.A series of core-flood runs was conducted to evaluate the oil recovery *** coated silica nanoparticles were found to alter rheological properties and exhibited a shear-thinning behavior as the stability of the coated silica nanoparticles could be improved *** low shear rates,the viscosity slightly increases,and the opposite happens at higher shear ***,the surfacemodified silica nanoparticles were found to alter the wettability of the aqueous phase into strongly water-wet by changing the contact angle from 80°to 3°measured against glass slides representing sandstone ***–water IFT results showed that the surface treatment by surfactant lowered the oil–water IFT by 30%.Also,the viscosity of brine increased from 0.001 to 0.008 Pa s by introducing SiO2 nano