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首页> 外文期刊>Fuel >A method for evaluating the kinetics of n-heptane-induced asphaltene precipitation from various Saskatchewan crude oils during light hydrocarbon flooding
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A method for evaluating the kinetics of n-heptane-induced asphaltene precipitation from various Saskatchewan crude oils during light hydrocarbon flooding

机译：评价轻烃驱油过程中正庚烷诱导的萨斯喀彻温省各种原油中沥青质析出动力学的方法

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摘要

A molar n-heptane programmed titration technique has been developed for evaluating the kinetics of n-heptane-induced asphaltene precipitation from three Saskatchewan crude oils during light hydrocarbon flooding. Results from the technique show that asphaltene precipitation kinetics can be modeled semi quantitatively in terms of a power law rate model. Values for the reaction order for n-heptane (35.8-43.3) were much larger than those for asphaltene (1.0-2.5) showing that asphaltene precipitation is more sensitive to the n-heptane added than the asphaltene content of the oil. Also, the large activation energies obtained (32-185 kJ/mol) confirms experimentally that n-heptane asphaltene precipitation is not just a mere physical process.
机译：已经开发了摩尔正庚烷程序滴定技术，用于评估轻烃驱油过程中正庚烷诱导的三种萨斯喀彻温原油中沥青质沉淀的动力学。该技术的结果表明，可以根据幂律速率模型对沥青质沉淀动力学进行半定量建模。正庚烷的反应级数（35.8-43.3）比沥青质的反应级数（1.0-2.5）大得多，这表明沥青质沉淀对添加的正庚烷比油中的沥青质含量更敏感。另外，获得的大活化能（32-185 kJ / mol）在实验上证实了正庚烷沥青烯的沉淀不仅仅是一个物理过程。

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