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用大庆、大港、孤岛、胜利、华北、辽河、阿曼、阿拉伯轻等８种原油的减压渣油及其抽出率不同的脱油沥青共４０个油样，测定其元素组成、４组分组成、平均相对分子质量以及红外光谱，计算其平均结构参数。将上述油样在１００ｍｌ高压釜内于４１０℃下进行热转化。结果表明，原料的裂化转化率不仅取决于其氢碳比，还与其硫含量和氮含量有关；经多元非线性回归，得到相关性较好的关联式；原料的裂化转化率与其４组分组成也有较好的相关性。结果还表明，反应终了时体系的庚烷不溶物含量主要取决于原料的氢碳比，而油样的甲苯不溶物产率与反应终了时体系的沥青质与（芳香分＋胶质）的含量比有关，得到较好的经验关联式。
40 oil samples of vacuum residue and 8 different deoiled bitumen samples of 8 crude oils of Daqing, Dagang, Gudao, Shengli, North China, Liaohe, Oman and Arabian Light were measured and their elemental compositions were determined. Four components , The average relative molecular mass and the infrared spectrum, calculate the average structural parameters. The oil sample was subjected to thermal conversion in a 100 ml autoclave at 410 ° C. The results show that the cracking conversion rate of raw materials depends not only on the hydrogen to carbon ratio, but also on the sulfur content and nitrogen content. Through multivariate nonlinear regression, the correlation is obtained. The cracking conversion rate of the raw materials and the four components There are also good correlations. The results also showed that the heptane insoluble content of the system at the end of the reaction mainly depends on the ratio of hydrogen to carbon of the feedstock. The yield of toluene-insoluble matter in the oil sample and the content ratio of asphaltene and (aromatic + gum) in the system at the end of reaction Related, get a better experience correlation.