The poor adhesion of oil droplets and bubbles in the flotation process leads to inefficient separation of oil and water. In this paper, condensate bubbles were prepared by partial vaporization of low boiling point condensate to increase the oil removal effect. The purpose of partial vaporization was achieved by bringing emulsified condensate droplets into the produced water at different temperatures. The structure of the bubble is composed of condensate film wrapped around the gas core of the vaporized portion. The contact angle between condensate bubble and oil surface is >150°, which show great similarity-intermiscibility. The average bubble size prepared at 303 K - 318 K is 20 - 100 μm. The stability of bubbles decreased with an increase in temperature, the half-decay time decreased from 340 s to 110 s, and the zeta potential decreased from −31 mV to −12 mV. However, the gas hold-up of the bubbles first increased and then decreased with the increase in temperature, while the highest gas holdup was 21 % at 313 K. The rise of the condensate/water ratio (R_con-wat) did not increase the stability of the bubbles, but the gas holdup increase. The condensate bubble flotation experiment found that at the optimum temperature 313 K, the oil removal efficiency of 1.5 % R_con-wat can reach 85 %. In contrast, the oil removal efficiency of the dissolved air flotation experiment is <75 %. Otherwise, with a smaller amount of flocculant (ferric chloride), the oil removal efficiency of condensate bubble flotation can reach >95 %.

浮选过程中油滴和气泡的附着力差，导致油水分离效率低。本文通过对低沸点凝析油进行部分汽化制备凝析油气泡，以提高除油效果。通过将乳化的凝析油液滴带入不同温度的采出水中来实现部分汽化的目的。气泡的结构由包裹在气化部分气核周围的凝结膜组成。凝析油气泡与油面的接触角>150°，表现出良好的相似相溶性。在 303 K - 318 K 制备的平均气泡尺寸为 20 - 100 μm。气泡的稳定性随着温度的升高而降低，半衰时间从340 s降低到110 s，Zeta 电位从-31 mV 降低到-12 mV。然而，随着温度的升高，气泡的持气率先升高后降低，在 313 K 时最高持气率为 21%。随着凝析水/水比（R_con-wat ) 没有增加气泡的稳定性，但气体滞留量增加。_{凝析油气泡浮选实验发现，在最佳温度313 K时，1.5 % R con-wat}的除油效率可达85 %。相比之下，溶气气浮实验的除油效率<75%。否则，用较少量的絮凝剂（氯化铁），凝结水气泡浮选除油效率可达>95%。