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Characterization of bitumen and a novel multiple synergistic method for reducing bitumen viscosity with nanoparticles and surfactants

机译：沥青的表征及其具有纳米粒子和表面活性剂的沥青粘度的新型多种协同方法

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This paper is concerned with the formation of bitumen during the drilling of the H oilfield in Iraq. The high viscosity and strong adhesion properties of bitumen can influence the drilling operations. Some complex problems include paste screening, and drill pipe sticking, which cause huge economic losses. Therefore, it is necessary to effectively reduce the bitumen viscosity. The contribution of a single subcomponent of bitumen to the viscosity can vary, and the combined effect of different components of bitumen on the viscosity remains unclear. Furthermore, the mechanism of viscosity reduction remains unclear. In this study, the effects of organic solvents on the viscosity of bitumen were studied, and toluene was selected as the best organic solvent. The results showed that aromatics/resins, aromatics/asphaltenes, and resin/asphaltenes can help increase the bitumen viscosity. Novel methods, including the use of nanoparticles, ethyl cellulose, and the quaternary ammonium salt of heptadecenyl hydroxyethyl imidazoline (QASHI), were proposed to decrease the viscosity. TiO _(2) and CuO nanoparticles were chosen, and the main factors influencing the viscosity, such as the particle type, concentration, particle size, temperature, and shear rate, were analysed. The results show that the bitumen viscosity decreases with the increase in the concentrations of ethyl cellulose and QASHI. A synergistic effect between ethyl cellulose and QASHI was found with an optimal concentrations of ethyl cellulose and QASHI (1000 and 1600 mg L ~(?1) ). A synergistic effect was also observed when nanoparticles, ethyl cellulose, and QASHI were used in combination. This paper reports the micro-mechanism whereby the viscosity of bitumen is decreased.
机译：本文涉及伊拉克H油田钻井期间沥青的形成。沥青的高粘度和强粘附性能可以影响钻井操作。一些复杂的问题包括粘贴筛选和钻杆粘贴，这导致巨大的经济损失。因此，有必要有效地降低沥青粘度。单个沥青对粘度的贡献可以变化，并且沥青对粘度不同组分的综合作用仍不清楚。此外，粘度减少的机制仍不清楚。在该研究中，研究了有机溶剂对沥青粘度的影响，并选择甲苯作为最佳有机溶剂。结果表明，芳烃/树脂，芳烃/沥青质和树脂/沥青质可以有助于增加沥青粘度。提出了一种新方法，包括使用纳米颗粒，乙基纤维素和六亚甲基羟乙基咪唑啉（Qashi）的季铵盐，以降低粘度。选择TiO _（2）和CuO纳米颗粒，分析了影响粘度的主要因素，例如颗粒类型，浓度，粒度，温度和剪切速率。结果表明，沥青粘度随着乙基纤维素和Qashi浓度的增加而降低。发现乙基纤维素和Qashi之间的协同效应，具有最佳的乙基纤维素和Qashi（1000和1600mg L〜（α1））。当纳米颗粒，乙基纤维素和Qashi组合使用时，还观察到协同效应。本文报道了微机制，沥青的粘度降低。

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