粘弹性表面活性剂压裂液在低渗油田的应用现状

Application status of visco-elastic surfactant fracturing fluid in the low permeability oilfield

结合粘弹性表面活性剂压裂液作用机理,介绍了3种典型的粘弹性表面活性剂压裂液体系(无聚合物型、抗温型、双子表面活性剂型),并综述了粘弹性表面活性剂压裂液国内外应用现状,指出研制合成工艺简单且成本较低的阴离子双子表面活性剂,开发疏水缔合聚合物/双子表面活性剂压裂液体系,提高抗温性,采用纳米技术是未来压裂液发展趋势。

The mechanisms of visco-elastic surfactant fracturing fluid and three kinds of typical visco-elastic surfactant fracturing fluid systems including non-polymer type, temperature resisted type and gemini surfactant type are introduced. The application status of visco-elastic surfactant fracturing fluid at home and abroad is reviewed. It is pointed that preparing anion gemini surfactants with simple synthetic process and low cost, developing hydrophobically associating polymer/gemini surfactant fracturing fluid system, improving resistance to temperature and using nano-technology are the development tendency in the future.