摘要
表面活性剂相关实验研究结果表明,合适的表面活性剂能够降低低渗油藏注水压力,8块样品平均降低26．6％,提高驱油效率6．7％;表面活性剂溶液作用后,其相渗曲线明显改变,油及水的相对渗透率均上升,两相流动范围变宽,岩石润湿性向亲水方向偏移。研究表明,复合2#表面活性剂能够改善低渗油藏——宝浪油田的注水开发效果。
Some related research findings show that an appropriate surface active agent can reduce the injection pressure of low permeability reservoir. The average reduced rate of 8 samples is 26. 6% and the enhanced displacement efficiency is 6.7%. After the solution action of surface active agent, the phase permeability curve changes obviously:the relative permeability of oil and water raises, two- phase flow domain becomes wider, and rock wetta-bility drifts towards the hydrophilic direction. The result shows that the compound 2# surface active agent is able to improve the waterflooding of Baolang oilfield which has low peamibility.
出处
《河南石油》
2006年第4期37-38,共2页
Henan Petroleum
关键词
表面活性剂
低渗油藏
降压增注
驱油效率
surface active agent
low permeability
reservoir
depressure and augmented injection
displacement efficiency
