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原油的特征化是利用一定的物理和教学模型，对复杂的原油体系进行简化描述，从而实现对其进行较为合理的解释，以满足油藏物性计算和油藏数值模拟等模型化工作的需要。坦现有原油特征化方法忽视了原油中有胶质、沥青质固体胶束相存在的事实，将原油以单一液相进行处理，从而导致在对于重质原油的相态计算及研究原油中沥青质、胶质等重有机质沉淀问题时，存在与原油的实际物理性质相矛盾、且计算结果与实验结果相比也存在较大的误差。基于原油中存在重有机质团相的物理事实出发，对现有的原油特征化方法进行了改进。在物理机理上，使现有特征化方法更加符合实际情况。并利用提出的方法，对几种较重原油的油藏物性进行了模拟计算，通过与现有特征化方法计算结果的比较可以看出，改进后的特征化方法所得到的计算结果准确性有较大提高。
Crude oil is characterized by the use of a certain physics and teaching model, the complexity of the crude oil system to simplify the description in order to achieve a more reasonable explanation to meet the reservoir properties of the numerical simulation and reservoir modeling and other modeling needs. The fact that existing oil characterization methods ignore the fact that there is a glial, asphaltene, solid micellar phase in the crude oil, treats the crude oil in a single liquid phase, resulting in the calculation of the phase state for heavy crude oil and the study of the pitch in crude oil When the problem of precipitation of heavy organic matters such as matter and colloids is contradictory to the actual physical properties of crude oil, there is a big error between the calculated result and the experimental result. Based on the physical fact that heavy organic groups are present in the crude oil, the existing method of characterization of crude oil is improved. On the physical mechanism, the existing methods of characterization are more in line with the actual situation. By using the proposed method, the physical properties of several heavy crude oil reservoirs are simulated and compared with the results of the existing characterization methods. It can be seen that the accuracy of the calculated results obtained by the improved characterization method is Larger increase.