采用室内旋转挂片法测定了自制的一种咪唑啉类两性缓蚀剂HGC2-2在模拟CO2/泡沫驱系统中的缓蚀性能。结果表明，在最优浓度500 mg/L下，缓蚀剂HGC2-2对N80和J55挂片的缓蚀率达到90%以上，同时与现场所用的起泡剂具有良好的配伍性能，对温度和CO2分压具有良好的适应能力。现场应用结果表明，HGC2-2缓蚀剂能将注入流程金属的腐蚀速率降低至0.076 mm/a以下，同时也能大幅度减缓采出流程的腐蚀，两口见气油井产出水中铁离子含量分别降低78%和85%，有效缓解了红河油田CO2/泡沫驱的腐蚀，可满足红河油田CO2/泡沫驱的缓蚀要求。

To alleviate the corrosion of CO2/foam flooding in Honghe oilfield, the corrosion inhibition performance of a synthesized amphoteric imidazoline corrosion inhibitor HGC2-2 was evaluated by rotary coupon test. The results showed that, under the condition of optimum concentration 500 mg/L, the corrosion inhibiting effect of HGC2-2 could reach 90% for N80 and J55 steels. The corrosion inhibitor HGC2-2 had an excellent compatibility with the foaming agent. The corrosion inhibitor HGC2-2 also had a good adaptability to temperature and CO2 partial pressure. The field test results showed that the corrosion inhibitor HGC2-2 could decrease the corrosion rate of injection process to below 0.076 mm/a, and decrease the corrosion of the production process greatly. The content of iron ions in the production water from two gas channeling wells got a reduction of 78% and 85% respectively. The corrosion inhibitor HGC2-2 could alleviate the corrosion of CO2/foam flooding in Honghe oilfield effectively and meet the corrosion inhibiting requirement of CO2/foam flooding in Honghe oilfield.