当前位置: X-MOL 学术Ind. Eng. Chem. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of Modified Fe3O4 Magnetic NPs on the Absorption Capacity of CO2 in Water, Wettability Alteration of Carbonate Rock Surface, and Water–Oil Interfacial Tension for Oilfield Applications
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-02-17 , DOI: 10.1021/acs.iecr.0c04857
Mohammad Javad Zandahvifard 1 , Abbas Elhambakhsh 1 , Mohammad Noor Ghasemi 1 , Feridun Esmaeilzadeh 1 , Rafat Parsaei 1 , Peyman Keshavarz 1 , Xiaopo Wang 2
Affiliation  

Implementation of carbonated water in the enhanced oil recovery (EOR) process for oil reservoirs by increasing the carbon dioxide (CO2) content in water causes interfacial tension (IFT) between oil and carbonated water to decline, thereby increasing the areal sweep efficiency as well as oil recovery. For this reason, the main purpose of this research was to examine the effect of using polymer-based Fe3O4 nanoparticles (NPs) on the amount of CO2 absorption in distilled water under different conditions (pressure: 20–40 bar, temperature: 35–60 °C, concentration of NPs: 0.01 to 0.14 wt %). To this end, two experimental setups were employed to measure the amount of CO2 absorption in water in the presence of bare Fe3O4 NPs, Fe3O4 NPs coated by poly(vinyl alcohol) (FPVA), and Fe3O4 NPs coated by polyacrylamide (FPAM) synthesized by the co-precipitation technique, and the IFT between oil and carbonated water. The results revealed that the presence of FPVA and FPAM NPs in water causes the amount of CO2 absorption to enhance up to 20.2 and 23.3%, respectively, as compared to water alone at 40 bar. Subsequently, to evaluate the potential of the synthesized NPs in reducing capillary pressure in oil reservoirs, the interfacial tension (IFT) between carbonated water containing each of these three NPs alone with the concentration of 0.01 wt % (Fe3O4, FPVA, FPAM NPs) and oil at various pressures and temperatures up to 80 bar and 80 °C, respectively, was measured. The results demonstrated that a maximum reduction in the IFT between oil and carbonated water in the presence of modified Fe3O4 NPs was found (31.91%) as compared to bare Fe3O4 NPs under the conditions investigated in this work. Eventually, it was observed that the modified NPs (i.e., FPVA and FPAM NPs) effectively enhanced the properties of the bare Fe3O4 NPs by improving the hydrophilicity of the carbonate rock surface.

中文翻译:

改性Fe 3 O 4磁性纳米粒对油田应用中CO 2吸收能力,碳酸盐岩表面润湿性变化以及水油界面张力的影响

通过提高水中的二氧化碳(CO 2)含量,在油藏的增强采油(EOR)过程中实施碳酸水,会导致油与碳酸水之间的界面张力(IFT)下降,从而也提高了区域清扫效率作为石油采收。因此,本研究的主要目的是研究在不同条件(压力:20–40 bar,温度)下使用聚合物基的Fe 3 O 4纳米颗粒(NPs)对蒸馏水中CO 2吸收量的影响。:35–60°C,NP浓度:0.01至0.14 wt%)。为此,采用了两个实验装置来测量CO 2的量吸收在水中裸Fe的存在3级Ò 4的NP,铁3 ö 4周的NP由聚(乙烯醇)(FPVA)涂覆的,和Fe 3 ö 4周的NP由聚丙烯酰胺(FPAM)涂覆的通过共沉淀技术合成,以及油和碳酸水之间的IFT。结果表明,水中FPVA和FPAM NP的存在会导致CO 2的量增加与40 bar的水相比,吸收率分别提高了20.2%和23.3%。随后,为了评估合成的NP在降低油藏中的毛细管压力方面的潜力,仅使用浓度为0.01 wt%(Fe 3 O 4,FPVA,FPAM的这三种NP中的每一种)的碳酸水之间的界面张力(IFT)分别在高达80 bar和80°C的各种压力和温度下测量了NPs和油。结果表明,与裸露的Fe 3 O 4相比,在改性的Fe 3 O 4 NP存在下,油和碳酸水之间的IFT降低最大(31.91%)。在这项工作调查的条件下的国家警察。最终,观察到改性的NP(即,FPVA和FPAM NP)通过改善碳酸盐岩石表面的亲水性而有效地增强了裸Fe 3 O 4 NP的性能。
更新日期:2021-03-03
down
wechat
bug