化学法回收处理油田污油技术的应用

Application of Chemical Treatment in the Recovery of Slop Oil in Oil Production

摘要: 针对大庆油田联合站生产中存在的污油回收处理实际问题，以及含硫化物污油对生产运行造成危害的程度，并结合联合站采出液和采出污水处理工艺的情况，在保证正常生产的前提下选择采用投加化学药剂的处理方法对3个联合站进行了含硫化物污油回收处理技术的推广应用，均取得了较好的应用效果，不但解决了含硫化物污油影响原油集输及采出水处理的问题，还显著改善了处理后采出水的水质，累计回收含硫化物污油17,275 t，避免了污油外排所造成的资源浪费和环境污染，获得较好的经济效益和社会效益。

Abstract: Accumulation of sulfide bearing slop oil in numerous production stations at Daqing Fields has severely disturbed crude oil dehydration and produced water treatment, resulting in over-specification water-cut of crude oil export, oil-in-water and suspended solid content of re-injection water. Recovery and back blending of slop oil into the incoming produced fluid assisted by chemical treatment was successfully conducted in 8 production stations. Totally 17,275 ton slop oil was recovered and treated by the existent crude oil dehydration facilities without major upset of their operation. In the meantime, crude oil dehydration and produced water treatment in the 8 production stations were significantly improved. Recovery and export of the slop oil helped to both reduce a significant amount of pollutant discharged by oil production and increase the benefit of the oil company.