根据超声波的性质和作用原理，采用特制的超声波发射议，用正交试验设计法，进行了多方面原油脱水试验工作。优选出针对古城B123区复合二元驱出液的超声波脱水工艺参数，即超声波频率为30kHz，声强2．1W／cm2，作用时间为10min，加P─201型破乳剂100mg／L，脱水温度70℃，其脱水率达80％以上。其结论对超声波脱水技术的研究及其机理的进一步探讨，具有一定的指导作用和参考价值。 According to the nature and principle of the ultrasonic wave, a special ultrasonic emission protocol was adopted. Orthogonal experimental design method was used to carry out experiments on various aspects of crude oil dehydration. Aiming at the ultrasonic dewatering process parameters of complex binary flooding solution in B123 area of ​​ancient city, the ultrasonic frequency is 30kHz, the sound intensity is 2.1W / cm2, the action time is 10min, the addition of P ─ 201 type demulsifier 100mg / L, dehydration temperature 70 ℃, the dehydration rate of more than 80%. The conclusion of ultrasonic dehydration technology and its mechanism to further explore, has a guiding role and reference value.