稠油中的胶质和沥青质易吸附并聚集在岩石中,导致稠油粘度大、流动性弱,给稠油开采、运输造成严重的困难。SiO
2纳米材料形成的硅烷醇基对沥青质的亲和力较高,可以分解沥青质聚集体,改变沥青质胶体结构,从而降低稠油粘度。室内通过对比不同粒径的纳米SiO
2材料,在不同粒径、不同浓度、不同温度和剪切速率下,评价了纳米SiO
2材料对稠油粘度的影响。试验结果表明,浓度为1000 mg/L,粒径为6 nm的SiO
2纳米能较大幅度地降低稠油粘度,稠油粘度降低率超过40%,且提高温度及高剪切速率有利于降低稠油粘度。表明了SiO
2纳米粒子有效防止沥青质聚集体的形成,起到分散沥青的作用,达到降低稠油粘度的目的。
The colloids and asphaltene in heavy oil are easy to adsorb and accumulate in rocks, resulting in high viscosity and weak fluidity of heavy oil, which causes serious difficulties in the exploitation and transportation of the heavy oil. The silane alcohol group formed by the SiO
2 nanomaterials has a high affinity to asphaltene, which can decompose asphaltene aggregates, change the colloidal structure of asphaltene, and reduce the viscosity of heavy oil. The effect of nano-SiO
2 on viscosity of heavy oil was evaluated by comparing nano-SiO
2 with different particle size, concentration, temperature and shear rate. The results show that the viscosity of heavy oil can be greatly reduced by a concentration of 1000 mg/L and a particle size of 8 nm, SiO
2 nanoparticles, and the viscosity reduction rate of heavy oil is more than 40%, and the increase of temperature and high shear rate is conducive to reduce the viscosity of heavy oil. It shows that SiO
2 nanoparticles can effectively prevent the formation of asphaltene aggregates, play the role of dispersing asphalt, and achieve the purpose of reducing the viscosity of heavy oil.
稠油降粘,SiO2,纳米材料,沥青质,稠油, Viscosity Reduction of Heavy Oil SiO2 Nanomaterial Asphaltene Heavy OilSiO2纳米材料对降低稠油粘度的影响
魏裕森,赵远远,金 勇,田 波,汪红霖. SiO2纳米材料对降低稠油粘度的影响Effect of SiO2 Nanomaterials on Reducing Viscosity of Heavy Oil[J]. 石油天然气学报, 2020, 42(04): 22-28. https://doi.org/10.12677/JOGT.2020.424108
参考文献ReferencesDe Castro, C., Miguel, L. and Mediavilla, M. (2009) The Role of Non Conventional Oil in the Attenuation of Peak Oil. Energy Policy, 37, 1825-1833. <br>https://doi.org/10.1016/j.enpol.2009.01.022李竟楠. 浅析我国稠油开发的技术现状及发展趋势[J]. 石化技术, 2018(1): 174, 209.于连东. 世界稠油资源的分布及其开采技术的现状与展望[J]. 特种油气藏, 2001, 8(2): 98-103.Buenrostro, G.E., Lira, G.C., Gil, V.A., et al. (2004) Asphaltene Pre-cipitation in Crude Oils: Theory and Experiments. AIChE Journal, 50, 2552-2570. <br>https://doi.org/10.1002/aic.10243Ghosh, A.K., Chaudhuri, P., Kumar, B., et al. (2016) Review on Aggrega-tion of Asphaltenevis-a-Vis Spectroscopic Studies. Fuel, 185, 541-554. <br>https://doi.org/10.1016/j.fuel.2016.08.031Sheu, E.Y. (2002) Petroleum Asphaltene Propaties, Characterization, and Issues. Energy & Fuels, 16, 74-82.
<br>https://doi.org/10.1021/ef010160bPerayeszi, T., Patzko, A., Berkesi, O., et al. (1998) Asphaltene Adsorption on Clays and Crude Oil Reservoir Rocks. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 137, 373-384.
<br>https://doi.org/10.1016/S0927-7757(98)00214-3Amin, J.S., Nikooee, E., Ghatee, M.H., et al. (2011) Investi-gating the Effect of Different Asphaltene Structures on Surface Topography and Wettability Alteration. Applied Surface Science, 257, 8341-8349.
<br>https://doi.org/10.1016/j.apsusc.2011.03.123Nassar, N.N., Hassan, A. and Pereira-Almao, P. (2011) Com-parative Oxidation of Adsorbed Asphaltenes onto Transition Metal Oxide Nanoparticles. Colloids and Surfaces A: Phys-icochemical and Engineering Aspects, 384, 145-149.
<br>https://doi.org/10.1016/j.colsurfa.2011.03.049Taborda, E.A., Alvarado, L.V., Franco, C.A., et al. (2017) Rheological Demonstration of Alteration in the Heavy Crude Oil Fluid Structure upon Addition of Nanoparticles. Fuel, 189, 322-333.
<br>https://doi.org/10.1016/j.fuel.2016.10.110Jing, G., Sun, Z., Tu, Z., et al. (2017) Influence of Different Vinyl Acetate Contents on the Properties of the Copolymer of Ethylene and Vinyl Acetate/Modified Nano-SiO2 Composite Pourpoint Depressant. Energy & Fuels, 31, 5854-5859. <br>https://doi.org/10.1021/acs.energyfuels.7b00189柳荣伟, 陈侠玲, 周宁. 稠油降粘技术及降粘机理研究进展[J]. 精细石油化工进展, 2008, 9(4): 20-25.庄娟娟. 乳化剂及稠油组分对乳状液界面性质的影响研究[D]: [硕士学位论文]. 北京: 中国石油大学, 2009.范维玉, 宋远明, 南国枝, 等. 水包稠油乳状液稳定性研究I.稠油官能团组分分离及其油水界面粘度考察[J]. 石油学报(石油加工), 2001, 17: 1-8.张廷山, 任明忠, 蓝光志, 等. 微生物降解作用对稠油理化性质的影响[J]. 西南石油学院学报, 2003, 25(5): 1-5.李若雪. 纳米二氧化硅复合材料的制备及其应用于高蜡稠油降凝降粘性能评价[D]: [硕士学位论文]. 济南: 山东大学, 2017.辛国栋. 稠油纳米复合材料降粘剂的合成与研究[D]: [硕士学位论文]. 济南: 山东大学, 2016.Shaban, S., Dessouky, S., Badawi, A.E.F., et al. (2014) Upgrading and Viscosity Reduction of Heavy Oil by Catalytic Ionic Liquid. Energy Fuels, 28, 6545-6553. <br>https://doi.org/10.1021/ef500993d程亮, 叶仲斌, 李纪晖, 等. 稠油中胶质对沥青质分散稳定性的影响研究[J]. 油田化学, 2011, 28(1): 37-44.程亮, 杨林, 罗陶涛, 等. 稠油分散体系中黏度与化学组成的灰熵关系分析[J]. 西安石油大学学报(自然科学版), 2007, 22(3): 92-95.胡景芳. 石油胶质沥青质类似高分子的特性[J]. 能源与节能, 2013(7): 15-17.Nassar, N.N., Betancur, S., Acevedo, S., et al. (2015) Development of a Pop-ulation Balance Model to Describe the Influence of Shear and Nanoparticles on the Aggregation and Fragmentation of Asphaltene Aggregates. Industrial & Engineering Chemistry Research, 54, 8201-8211. <br>https://doi.org/10.1021/acs.iecr.5b02075Hasan, S.W., Ghannam, M.T. and Esmail, N. (2010) Heavy Crude Oil Viscosity Reduction and Rheology for Pipeline Transportation. Fuel, 89, 1095-1100. <br>https://doi.org/10.1016/j.fuel.2009.12.021Alvarez, G., Poteau, S., Argillier, J.-F., et al. (2008) Heavy Oil-Water Interfacial Properties and Emulsion Stability: Influence of Dilution. Energy & Fuels, 23, 294-299. <br>https://doi.org/10.1021/ef800545kGhannam, M.T., Hasan, S.W., Abu-Jdayil, B., et al. (2012) Rheological Properties of Heavy & Light Crude Oil Mixtures for Improving Flowability. Journal of Petroleum Science and Engi-neering, 81, 122-128.
<br>https://doi.org/10.1016/j.petrol.2011.12.024Khan, M.R. (1996) Rheological Properties of Heavy Oils and Heavy Oil Emulsions. Energy Sources, 18, 385-391.
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