Oil and gas industry has gathered extensive and positive experience of applying corrosion inhibitor to control carbon steel corrosion in CO2 and H2S environment. Occasionally asset failures caused by corrosion are observed due to a wrong corrosion inhibitor applied. In many cases overuse or wrongly use of surfactants in a commercial corrosion inhibitor package has attributed to these asset failures. In this paper comprehensive evaluation was conducted to determine what surfactant can enhance corrosion inhibition of different imidazolines. The results show that the water dispersibility of corrosion inhibitor molecules was increased greatly by applying correct surfactants. Some surfactants improve the partition property of inhibitors in aqueous phase. It therefore improves the corrosion inhibition performance. The inhibition performance was measured by both general corrosion inhibition and localized corrosion inhibition.