The impact of the oil character and quartz sands on the thermal behavior and kinetics of crude oil
The impact of the oil character and quartz sands on the thermal behavior and kinetics of crude oil
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DOI：
10.1016/j.energy.2020.118573
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发表时间：
2020-08
期刊：
影响因子：
9
通讯作者：
Hao Chen;Xiliang Liu;N. Jia;Xiaofeng Tian;I. Duncan;R. Yang;Shenglai Yang
中科院分区：
文献类型：
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作者：
Hao Chen;Xiliang Liu;N. Jia;Xiaofeng Tian;I. Duncan;R. Yang;Shenglai Yang
氧化反应在空气驱油中起着重要作用。本文采用热重法研究了轻质油、重油以及原油与石英砂混合物在四种升温速率下的三个氧化反应阶段。常用的动力学方法进行修改，以估计动力学参数，并使用一个更现实的转化率范围。结果表明，轻质油以低温氧化（LTO）为主，而重油以燃料沉积（FD）和高温氧化（HTO）为主。为了获得更准确的动力学参数，应避开LTO & FD和FD & HTO的过渡区间。石英砂用于提供大的表面积，这导致轻质油的LTO的估计活化能降低15%，而重油的FD和HTO提高了11.7%和14.1%，从而提高了石油采收率（EOR）。这些结果提高了对不同原油在整个温度范围内的氧化的理解，并具有广泛的适用性，以改进基于EOR项目的注空气设计。
Oxidation reaction plays an important role in air flooding. In this paper, three oxidation reaction stages of both light and heavy oils, as well as mixtures of oil and quartz sands are studied at four heating rates by conducting thermogravimetric experiments. Commonly used kinetic methods are modified to estimate kinetics parameters, and a more realistic range of conversion rates is used. The results demonstrate that low temperature oxidation (LTO) dominates for light oil but fuel deposition (FD) and high temperature oxidation (HTO) dominate for heavy oil. The region of transition intervals in both LTO & FD and FD & HTO should be avoided to get more accurate kinetics parameters. Quartz sands are used to provide a large surface area, which result in decreasing the estimated activation energy of LTO for light oil by 15%, whereas the FD and HTO of heavy oil are enhanced by 11.7% and 14.1%, resulting in enhancing oil recovery (EOR). These results improve the understanding of the oxidation of different crude oils over the whole range of temperatures and have broad applicability to improving the design of air injection based on EOR projects.