摘要
简要介绍了表面活性剂降压增注原理,由阴离子表面活性剂SDBS和两性表面活性剂DJ-M以质量比4∶1复配而成的低张力体系,能将油水界面张力在较宽温度和较大矿化度范围内降低至10-3 mN/m数量级。考察了复配低张力体系降压增注和驱油性能,结果表明,复配低张力体系能使注水压力平均降低37.5%,增加注水量,采油率提高8个百分点。
Principle for surfactant to decrease pressure and increase injection was briefly introduced. The tension on the interface of oil - water decreased to the magnitude of 10-3 mN/m in wide temperature and salinity range using the low surface -tension system comprising anionic surfactant SDBS and amphoteric DJ - M in the mass ratio of 4 ： 1. The performamces such as pressure - decrease, injection - increase, and oil flooding were examined. The result showed that the water - injection pressure decreasedby 37.5 %. the water - injection increased,and the oil -production rate increased by 8%.
出处
《精细石油化工进展》
CAS
2012年第7期18-21,共4页
Advances in Fine Petrochemicals
关键词
低张力体系
表面活性剂
低渗透油藏
注水压力
采收率
low surface- tension system
surfactant, low permeable oil reservoir
water- injection pres-sure
oil - production rate
