流体样品重质组分劈分优化规律

Optimization of fluid sample heavy component division

相态拟合为组分模型提供了所需的各组分状态参数,拟合的好坏决定其提供的状态参数能否准确表征实际流体性质。因此,以印尼项目凝析气田凝析气样品为研究对象进行重质组分劈分,分析露点压力、分离器气油比及最大反凝析液量的拟合情况,优选重质组分劈分点。在多个样品劈分优选的基础上,形成一套重质组分（C7＋）摩尔含量介于0.96%-29%的重质组分劈分优化规律,从而提高相态拟合精度并节省相态拟合的时间。

Since phase matching provides state parameters of each composition for compositional model, the quality of matching would influence the characterization precision of fluid properties by state parameters. Condensate gas sample from condensate gas pool of the Indonesia project is taken as the studying target, of which the heavy component division has been conducted, analyzing the matching situations of dew point pressure, separator GOR and maximum retrograde condensed liquid, as well as optimizing heavy components dividing points. Based on division optimization of multiple samples, an optimization rule has been found for a series of heavy components （C7＋） with tools amount between 0.96% - 29% , which helps to promote the matching precision and shortening the matching time.