Preparation of Amphiphilic Janus-SiO 2 Nanoparticles and Evaluation of the Oil Displacement Effect.

Autor: Tang S; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Hubei Key Laboratory of Oil and Gas Drilling Engineering, Wuhan, Hubei 430100, China., Sun Z; SINOPEC Shengli Oilfield Chunliang Oil Production Plant, Shandong 256504, China., Dong Y; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Hubei Key Laboratory of Oil and Gas Drilling Engineering, Wuhan, Hubei 430100, China., Zhu Y; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Petroleum Exploration and Development Research Institute, SINOPEC, Beijing 102206, China., Hu H; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Hubei Key Laboratory of Oil and Gas Drilling Engineering, Wuhan, Hubei 430100, China., Wang R; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Petroleum Exploration and Development Research Institute, SINOPEC, Beijing 102206, China., Liao H; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Petroleum Exploration and Development Research Institute, SINOPEC, Beijing 102206, China., Dai Q; State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing 102206, China.; SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China.; Petroleum Exploration and Development Research Institute, SINOPEC, Beijing 102206, China.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2024 Jan 26; Vol. 9 (5), pp. 5838-5845. Date of Electronic Publication: 2024 Jan 26 (Print Publication: 2024).
DOI: 10.1021/acsomega.3c08979
Abstrakt: In order to meet the requirements of tertiary oil recovery technology in a low-permeability, dense, and high-salt reservoir, gaseous SiO 2 nanoparticles were modified with trichloro(octyl)silane and aminopropyl triethoxysilane by interface protection modification, and amphiphilic Janus-SiO 2 nanoparticles with hydrophobic carbon chain and hydrophilic amino group were prepared. The basic properties of amphiphilic nanoparticle dispersion were evaluated by surface interfacial tension and wettability tests, and the oil displacement effect of amphiphilic nanoparticle dispersion was investigated. The results show that the size distribution of Janus-SiO 2 nanoparticles with n-octyl as the hydrophobic carbon chain and amino group as the hydrophilic headgroup is uniform, and they have good dispersion in mineralized water. The change of salinity has little effect on the interfacial activity. The interfacial tension between the amphiphilic nanoparticle dispersion and crude oil is always on the order of 10 -2 mN/m, and the amphiphilic nanoparticle dispersion has good interfacial activity. Amphiphilic nanoparticles adsorbed on the rock surface can enhance the hydrophilicity of the rock surface. Amphiphilic nanoparticle dispersion liquid has a certain effect of improving oil recovery in the environment of high-salt and low-permeability reservoir. Under the condition of 65 °C and salinity of 8000 mg/L, injection of 0.5 PV 0.05% amphiphilic nanoparticle dispersion can enhance oil recovery by 14.6% on the basis of water flooding. The mechanism of amphiphilic nanoparticles to improve the recovery efficiency of low-permeability tight high-salt reservoir mainly includes reducing the oil-water interfacial tension, changing the rock wettability, and enhancing the shear viscosity of oil and water interface and the interfacial film strength, which has excellent potential application prospect in the development of low-permeability tight high-salt reservoir.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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