在多组分混合原油凝点和粘度计算公式的基础上，利用正三角坐标法，比一般图表法更加直观而精确地确定其的凝点和粘度。同时，根据工程需要想得到更精确的值，只要设定更小的等值坐标系步长，就可以满足所需。利用正三角坐标法也以可确定一定凝点或粘度后配比混合原油组合。 Based on the calculation formula of pour point and viscosity of multicomponent crude oil, using the regular triangle coordinate method, the freezing point and viscosity of the mixed crude oil are determined more intuitively and precisely than the general graph method. At the same time, according to project needs to get more accurate value, as long as the smaller equivalent coordinate system step, you can meet the desired. The use of positive trigonometric coordinates method also to determine a certain freezing point or viscosity mixture of crude oil mix.