通过试验和机理研究 ,分析了原油预分水旋流器的除水分离能力。在胜利油田东辛采油厂辛二接转站对 35mm , 30mm和 2 5mm原油预分水旋流器进行了现场试验。试验表明 ,原油预分水旋流器可以有效地分离游离水 ,而对乳化水基本没有分离能力 ;当溢流含水主要为乳化水时 ,其含水量与温度之间没有明显的函数关系 Through the experimental and mechanistic studies, the separation ability of crude oil pre-dividing hydrocyclone was analyzed. Field test was carried out on the Xin Er Junction Transfer Station at Dongxin Production Plant in Shengli Oilfield for 35mm, 30mm and 2mm crude oil pre-submersible cyclones. Experiments show that the crude oil pre-hydroclone cyclone can effectively separate the free water, while the emulsion water is basically no separation capacity; when the overflow water is mainly emulsified water, the water content and temperature there is no significant functional relationship