4> The result of Q-clustering analysis on the fluid accompanying with Energy Mineral Diposits says that the formation and the tectonic site the petroleum lying in mainly impact on its element geochemistry. There is some relation between petroleum and its associated water on origin. 能源矿产伴生流体的Q型聚类分析结果反映出石油的贼存层位以及所赋存的构造位置是影响其元素地球化学特征的主要因素:石油伴生水与石油有一定成因联系;