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首页> 外文期刊>Fuel >Experimental constraints on the evolution of organic matter in oil shales during heating: Implications for enhanced in situ oil recovery from oil shales
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Experimental constraints on the evolution of organic matter in oil shales during heating: Implications for enhanced in situ oil recovery from oil shales

机译：油页岩中有机物在加热过程中演变的实验限制：对提高油页岩原位采收率的影响

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In situ oil shale conversion experiments have revealed that to efficiently obtain shale oil, factors such as heating temperature, products, and matter thermal evolution of organic matter during heating need to be optimized. In this study, oil shales from China were subjected to retorting experiments involving eight heating steps. During steps I-II (<= 300 degrees C), the expelled product is mainly water, the hydrocarbon generation potential (PP) of the samples was extremely high, and the organic matter was in the immature to low-mature stage. The oil shale produced a large amount of oil in steps III-VI (300-475 degrees C), and the TOC contents and S2 of the shale showed the greatest decreases during these steps. The analysis data suggest that the organic matter entered the mature stage during these steps. After heating to 400 degrees C and expelling a large amount of oil and gas, the PP decreased gradually. From 475 to 520 degrees C (steps VII-VIII), only a small amount of gas was produced and the organic matter had almost no PP in the high- and over-mature stages. Based on our experimental results, in situ conversion of oil shale the final heating temperature should be similar to 440 degrees C. These constraints require further field testing to be properly optimized.
机译：原位油页岩转化实验表明，要有效获得页岩油，需要优化加热温度，产物和物质在加热过程中有机物的热释放等因素。在这项研究中，对来自中国的油页岩进行了8个加热步骤的干馏实验。在步骤I-II（<= 300摄氏度）中，排出的产品主要是水，样品的碳氢化合物生成潜能（PP）极高，有机物处于未成熟到低成熟阶段。在步骤III-VI（300-475摄氏度）中，油页岩产生了大量的油，在这些步骤中，页岩的TOC含量和S2下降最大。分析数据表明，有机物在这些步骤中进入了成熟阶段。加热到400摄氏度并排出大量石油和天然气后，PP逐渐降低。在475至520摄氏度（步骤VII-VIII）下，在高温和过成熟阶段仅产生少量气体，有机物几乎没有PP。根据我们的实验结果，原位转换油页岩的最终加热温度应接近440摄氏度。这些限制条件需要进一步的现场测试才能适当优化。

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