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Effects of initial wettability and different surfactant-silica nanoparticles flooding scenarios on oil-recovery from carbonate rocks

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Petroleum 2022年第4期8卷 499-508页

作者： amin rezaei amin Khodabakhshi Amir Esmaeili Mehdi Razavifar Abdal Industrial Projects Management Company(MAPSA) Pardis Technology ParkPardisTehranIran Department of Chemical Engineering Faculty of EngineeringMahshahr BranchIslamic Azad UniversityMahsharIran Department of Petroleum Engineering Amirkabir University of Technology(Tehran Polytechnic)TehranIran Enhanced Oil Recovery(EOR)Research Centre IOR/EOR Research InstituteShiraz UniversityShirazIran

Initial wettability of rock surfaces plays a crucial role in displacement efficiency during core flooding *** this study,linear alkylbenzene sulfonic acid(LABSA)and silica nanoparticles(NPs)were utilized as enhanced oil recovery(EOR)agents to improve oil recovery from carbonate rock *** to the core flooding experiments,effects of the presence of LABSA and SiO_(2)NPs on oil-water interfacial tension(IFT),wettability alteration,and surfactant adsorption on the rock surfaces were *** results of IFT/contact angle measurements showed that by adding 0.03 wt%LABSA,the IFT,and contact angle reduced from the initial values of 36.9 mN/m and 115.6°±0.2°to 8.3 mN/m and 100.3°±0.4°,***,incorporating SiO_(2)NPs(0.1 wt%)into the system causes a further decrease in IFT value(dropped to 2.2 mN/m),along with a substantial reduction in contact angle(final contact angle after 6 h soaking into the solution was measured as 64.8°±0.3°).In addition,surfactant loss due to the adsorption on the rock surfaces decreased up to 35%in the presence of SiO_(2)NPs(0.1 wt%).Moreover,various core flooding scenarios in carbonate plugs with different initial wettability conditions were conducted,and the performance of the EOR agents in enhancing oil recovery from oilwet and water-wet core samples in the secondary and tertiary mode of flooding was *** outcomes revealed that the injection of a combination of chemicals,containing LABSA(0.03 wt%)and SiO_(2)(0.1 wt%)in the secondary mode leads to the highest ultimate oil recovery from sister carbonate core samples.

关键词： LABSA Enhanced oil recovery Silica nanoparticles IFT Contact angle Adsorption Carbonates

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Potentially Toxic Element Concentration in Fruits Collected from Markazi Province(Iran): A Probabilistic Health Risk Assessment

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Biomedical and Environmental Sciences 2019年第11期32卷 839-853页

作者： Mohammad rezaei Bahareh Ghasemidehkordi Babak Peykarestan Nabi Shariatifar Maryam Jafari Yadolah Fakhri Maryam Jabbari amin Mousavi Khaneghah Department of Food Hygiene Faculty of Veterinary MedicineUniversity of TehranTehranIran Department of Food Safety and Hygiene School of Public HealthTehran University of Medical SciencesTehranTran Department of Biochemistry Payame Noor UniversityIsfahanIran Department of Agriculture Payame Noor UniversityTehranTran Department of Environmental Health Engineering School of Public Health and SafetyStudent Research CommitteeShahid Beheshti University of Medical SciencesTehranTran Department of Public Health School of Paramedical and HealthZanjan University of Medical SciencesZanjaniran Department of Food Science Faculty of Food EngineeringUniversity of Campinas(UNICAMP)Rua Monteiro Lobato80.Caixa Postal:6121.CEP:13083-862.Campinas.Sao Paulo.Brazil

Objective This study was conducted to evaluate the concentration of potentially toxic elements(PTEs)such as arsenic(As),cadmium(Cd),mercury(Hg),and lead(Pb)in fruit samples collected from Markazi Province,Iran.A probabilistic health risk assessment due to ingestion of PTEs through the consumption of these fruits was also *** The concentration of PTEs in 90 samples of five types of fruits(n=3)collected from six geographic regions in Markazi Province was *** potential health risk was evaluated using a Monte Carlo simulation *** A significant difference was observed in the concentration of PTEs between fruits as well as soil and water samples collected from different regions in Markazi *** order of PTE concentration in the soil and water samples was as follows:Pb>As>Hg>***,the highest level of transfer factor for Cd and Hg correlated with the *** estimated daily intake for adults and children was lower than the recommended tolerable daily *** The population in Markazi Province,Iran,is not at considerable noncarcinogenic or carcinogenic risk due to the ingestion of PTEs through the consumption of the examined fruits.

关键词： Fruits Soil Water Toxic elements Target Hazard Quotient(THQ) Estimated Hazard Index(HI)

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