Abstract: Oilfield-produced water is characterized for high temperature, high salinity, and high gas content of hydrogen sulfide content or carbon dioxide. Pipelines and equipment are under serious corrosion and penetration. Conventional corrosion inhibitors, such as imidazoline corrosion inhibitor and amine inhibitor, are difficult to inhibit corrosion of the oilfield-produced water. There is an urgent need for high-efficiency corrosion inhibitor at production fields. Based on the corrosive properties of oilfield-produced water and the mechanism of inhibitors and optimization of molecular structural design, the high-efficiency corrosion inhibitor of the KYHS series was synthesized and compounded on the basis of the structure of two types of corrosion inhibitor ---imidazoline and alkynoxymethyl methyl amine. Application results showed that live hanging pieces inhibition rate was more than 99 percent, much better than otherproductsathome.Suitableforawiderangeofsewage,thisproductcanbeusedforthecomplexworkingconditionsofoilfields.

Key words: oilfield, sewage, corrosioninhibitor, imidazoline, alkynoxymethyl amine, synthesize, compound

摘要： 油田污水具有高温、高矿化度、高含硫化氢或二氧化碳气体的特点,管线设备腐蚀穿孔严重,常规缓蚀剂为咪唑啉缓蚀剂或有机胺类缓蚀剂,难以抑制腐蚀问题,生产现场亟需高效的缓蚀剂。根据油田污水水质的腐蚀性特点及缓蚀剂的缓蚀机理,以咪唑啉和炔氧甲基胺两类缓蚀剂结构为基础,进行分子结构的优化设计,合成、复配出KYHS系列高效缓蚀剂。应用后,现场挂片缓蚀率在99%以上,缓蚀效果好于国内其他产品。该产品适用污水范围广,能够满足油田复杂工况。

关键词: 油田, 污水, 缓蚀剂, 咪唑啉, 炔氧甲基胺, 合成, 复配