Interfacial Regulation of Hybrid Nanoparticles via Silane Modification and Corresponding Pore-Scale Flow Simulation
4 affiliations
- 1Chinese Academy of Sciences , , ,
- 2State Key Laboratory of Offshore Oil and Gas Exploitation , ,
- 3CNOOC Research Institute Co., Ltd. , ,
- 4Southwest Petroleum University , , ,
Abstract
High-temperature and high-salinity porous reservoirs impose severe challenges on nanofluid-based enhanced oil recovery (EOR), mainly including poor colloidal stability, excessive particle retention, and limited deep migration. To tackle these limitations, silane coupling agent 3-glycidoxypropyltrimethoxysilane (KH560) was adopted to regulate the intermolecular interactions of hybrid nanoparticles (HNPs). Colloidal probe atomic force microscopy (AFM) and quartz crystal microbalance with dissipation (QCM-D) were combined to quantitatively characterize the short-range adhesion and long-range steric repulsion, as well as mineral interfacial adsorption behaviors of HNP/KH560 blended systems with varied mass ratios. The results demonstrate that the optimal HNP-to-KH560 mass ratio of 2:1 effectively suppresses short-range interfacial attraction and strengthens long-range steric repulsion. This yields rigid and uniform adsorbed layers, which contribute to wettability alteration and the reduction of oil–water interfacial tension. Pore-scale multiphysics simulation was further performed. All interfacial boundary-setting parameters, including wettability state, interfacial tension, and particle-deposition kinetics, were derived from AFM and QCM-D measurements on the optimized silane-modified HNP sample. Simulation results show that regulated intermolecular forces induce uniform particle adsorption, neutralize pore wettability, and mitigate pore blockage, suggesting potential sweep-efficiency gains under simulated pore-scale conditions. Different from pore-blocking microspheres and single silica nanofluids, this silane-modified HNP system achieves favorable EOR performance via synergistic interfacial modification and controllable particle deposition. A multiscale quantitative correlation is established between microscopic intermolecular interactions and pore-scale transport properties. This work provides fundamental guidance for designing high-performance nanofluids adapted to harsh subsurface porous media.
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BibTeX
@article{yang2026interfacial,
title = {{Interfacial Regulation of Hybrid Nanoparticles via Silane Modification and Corresponding Pore-Scale Flow Simulation}},
author = {Hui Yang and Jian Zhang and Xiujun Wang and Zhiwei Wang and Caihong Xu and Rui Liu and Zezhou Chen and Wanfen Pu and Zongbo Zhang},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c08337},
url = {https://pubs.acs.org/acsodf/article/11/42/65491/5451594/Interfacial-Regulation-of-Hybrid-Nanoparticles-via},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Interfacial Regulation of Hybrid Nanoparticles via Silane Modification and Corresponding Pore-Scale Flow Simulation
AU - Hui Yang
AU - Jian Zhang
AU - Xiujun Wang
AU - Zhiwei Wang
AU - Caihong Xu
AU - Rui Liu
AU - Zezhou Chen
AU - Wanfen Pu
AU - Zongbo Zhang
PY - 2026
DA - 2026/10/15
JO - ACS Omega
DO - 10.1021/acsomega.6c08337
UR - https://pubs.acs.org/acsodf/article/11/42/65491/5451594/Interfacial-Regulation-of-Hybrid-Nanoparticles-via
AB - High-temperature and high-salinity porous reservoirs impose severe challenges on nanofluid-based enhanced oil recovery (EOR), mainly including poor colloidal stability, excessive particle retention, and limited deep migration. To tackle these limitations, silane coupling agent 3-glycidoxypropyltrimethoxysilane (KH560) was adopted to regulate the intermolecular interactions of hybrid nanoparticles (HNPs). Colloidal probe atomic force microscopy (AFM) and quartz crystal microbalance with dissipation (QCM-D) were combined to quantitatively characterize the short-range adhesion and long-range steric repulsion, as well as mineral interfacial adsorption behaviors of HNP/KH560 blended systems with varied mass ratios. The results demonstrate that the optimal HNP-to-KH560 mass ratio of 2:1 effectively suppresses short-range interfacial attraction and strengthens long-range steric repulsion. This yields rigid and uniform adsorbed layers, which contribute to wettability alteration and the reduction of oil–water interfacial tension. Pore-scale multiphysics simulation was further performed. All interfacial boundary-setting parameters, including wettability state, interfacial tension, and particle-deposition kinetics, were derived from AFM and QCM-D measurements on the optimized silane-modified HNP sample. Simulation results show that regulated intermolecular forces induce uniform particle adsorption, neutralize pore wettability, and mitigate pore blockage, suggesting potential sweep-efficiency gains under simulated pore-scale conditions. Different from pore-blocking microspheres and single silica nanofluids, this silane-modified HNP system achieves favorable EOR performance via synergistic interfacial modification and controllable particle deposition. A multiscale quantitative correlation is established between microscopic intermolecular interactions and pore-scale transport properties. This work provides fundamental guidance for designing high-performance nanofluids adapted to harsh subsurface porous media.
SN - 2470-1343
ER -