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Assessing the effects of nanoparticle type and concentration on the stability of CO2 foams and the performance in enhanced oil recovery

Bayat, A. E. and Rajaei, K. and Junin, R. (2016) Assessing the effects of nanoparticle type and concentration on the stability of CO2 foams and the performance in enhanced oil recovery. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 511 . pp. 222-231. ISSN 0927-7757

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Abstract

Utilizing nanoparticles (NPs) for stabilizing CO2-foams has recently become an interesting subject among petroleum engineers. It has been proven that silica (SiO2) NP is a good agent for stabilizing CO2-foams. Investigating the role of other types of NPs is ongoing and this research attempted to determine and compare the effects of three hydrophilic metal oxide NPs, namely aluminium oxide (Al2O3), titanium dioxide (TiO2), copper oxide (CuO) as well as the effect of SiO2 on the stability of CO2-foams. For this aim, the listed NPs in concentrations from 0.002 to 0.1 wt% were dispersed in de-ionized water to make suspensions. These suspensions were utilized in a chromatography column to produce foam. The stability of the generated NPs-CO2-foams was determined by measuring the half-life time. The results revealed that the highest stability of NPs-CO2-foams was reached at an optimum concentration of 0.008wt% for all NP types. Moreover, SiO2, Al2O3, TiO2, and CuO NPs-CO2 foams half-life times were obtained 28.1, 24.6, 20.1, and 17.9\xA0min, respectively. In addition, the applicability of generated NPs-CO2 foams on oil displacement through quartz sand porous media was determined. The amounts of oil recoveries via SiO2, Al2O3, TiO2, and CuO NPs-CO2 foams achieved were 71.7, 65.7, 58.2, and 57.3 respectively. Overall, it was found that stability of a NP-CO2-foam is strongly dependent on NP type and concentration, and NP stability against deposition in aqueous phase. Based on the findings, more oil recoveries can be achieved by more stable NP-CO2 foams.

Item Type:Article
Uncontrolled Keywords:Aluminum, Atmospheric composition, Column chromatography, Copper oxides, Enhanced recovery, Hydrophilicity, Metals, Nanoparticles, Oil well flooding, Oxides, Porous materials, Stability, Titanium dioxide, Titanium oxides, Chromatography columns, Enhanced oil recovery, Foam stability, Hydrophilic metal oxides, Hydrophilic nanoparticles, Nanoparticle (NPs), Oil displacement, Optimum concentration, Carbon dioxide, aluminum oxide, carbon dioxide, copper oxide, nanoparticle, oil, silica nanoparticle, silicon dioxide, titanium dioxide nanoparticle, water, Article, column chromatography, foam, foam stability, priority journal, suspension
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:71511
Deposited By: Fazli Masari
Deposited On:15 Nov 2017 03:36
Last Modified:15 Nov 2017 03:36

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