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石蜡油对稠油热行为的影响研究
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Abstract:
针对火驱过程中稠油点火及稳定燃烧，利用同步热分析仪开展石蜡油对稠油热行为的影响研究。结果表明，石蜡油能够增加低温氧化阶段的放热量，使得油砂更容易进入高温氧化阶段，增加高温氧化放热量；利用微分法和积分法对稠油氧化进行动力学模拟，两种模拟结果表明，石蜡油对稠油高温氧化阶段的活化能影响不大。石蜡油有助于引燃油层，促进稠油高温氧化燃烧过程，对现场推广应用有一定意义。
Aiming at the ignition and stable combustion process of heavy oil in in-situ combustion, the thermal behavior of heavy oil with paraffin oil was investigated using simultaneous thermal analyzer. The results showed that the heat release of heavy oil was increased in the low temperature oxidation stage with the input of Paraffin oil, so the heavy oil can easily enter the high temperature oxidation stage. The kinetic simulation results showed that the activation energy of heavy oil in high temperature oxidation stage had no significant variation, indicating that paraffin oilcan helps to ignite the oil layer and promote the combustion of heavy oil.
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https://doi.org/10.1016/j.apcata.2018.07.021 |
