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采用建立在大型数据库基础上的新的经验相关式对原油物理性质进行估算，其结果要优于以前发表过的工业标准相关式。新的相关式是针对下列原油物理性质确立的：①原油的地层体积系数；②溶解气、油比；③泡点压力；④不含气原油的粘度；⑤饱和气原油的粘度；⑥欠饱和原油的粘度；⑦饱和原油的等温压缩系数；⑧天然气比重的修正系数；⑨将闪蒸原油地层体积系数转换为微分原油地层体积系数的换算系数。这些相关式是诸如温度、压力、分离天然气比重和储罐原油比重这类现场可测试参数的函数。它们都是根据包含有世界范围内油气资料的大型数据库（A）推导出来的。此外，另外一个包含有以前发表过资料的数据库对这些相关式进行了验证。
The use of a new empirical correlation based on large databases to estimate the physical properties of crude oil is superior to the previously published industry standard correlations. The new correlation is established for the following physical properties of crude oil: (1) formation volume factor of crude oil; (2) dissolved gas to oil ratio; (3) bubble point pressure; (4) viscosity of crude oil without gas; (5) viscosity of saturated crude oil; Crude oil viscosity; ⑦ isothermal compression coefficient of saturated crude oil; ⑧ natural gas gravity correction factor; ⑨ flash crude oil formation volume factor is converted to differentiated crude oil formation volume factor conversion factor. These correlations are a function of the field-testable parameters such as temperature, pressure, fraction of natural gas, and specific gravity of crude oil in a tank. They are all derived from a large database (A) that contains world-wide hydrocarbon data. In addition, these other correlations have been validated by a separate database containing previously published material.