采用咪唑啉类缓蚀剂对P110S油管钢进行预膜处理和腐蚀试验，研究了预膜时间（0.5~4 h）、腐蚀温度（30~120 ℃）和介质流速（2~12 m·s^-1）对缓蚀性能的影响。结果表明：随缓蚀剂含量增加和预膜时间延长，缓蚀率增大，油管钢表面成膜效果提高；缓蚀剂质量浓度为300 mg·L^-1，预膜时间为2 h时的缓蚀效果较好；随腐蚀温度升高，缓蚀剂的缓释率降低，预膜2 h试样的耐腐蚀性能先降低，当温度升到 80 ℃时耐腐蚀性最差，缓蚀剂开始失效；随介质流速增大，预膜2 h试样的腐蚀速率逐渐增大；当介质流速高于10 m·s^-1时，预膜试样发生严重腐蚀，该缓蚀剂不再适用。

P110S tubing steel was pre-filmed with imidazoline corrosion inhibitors, and then the corrosion test was performed. The effects of pre-film time (0.5-4 h), corrosion temperature (30-120 ℃) and medium flow velocity (2-12 m·s^-1) on the corrosion inhibition performance were studied. The results show that with the increase of inhibitor content and pre-film time, the corrosion inhibition rate and the film formation effect on the tubing steel surface increased. The corrosion inhibition performance was relatively good at the inhibitor mass concentration of 300 mg · L^-1and pre-film time of 2 h. With increasing temperature, the inhibitor inhibition rate decreased, the corrosion resistance of the 2 h pre-filmed sample decreased first and showed the worst at 80 ℃; the inhibitor started to fail. The corrosion rate of the 2 h pre-filmed sample increased with the flow velocity. When the medium flow velocity was higher than 10 m·s^-1, the pre-filmed samples were seriously corroded, and the corrosion inhibitor was no longer applicable.