摘要
借助界面扩张流变测量方法,研究了2种微生物菌液体系与油相形成的界面特性。结果表明,微生物细胞及其代谢产物具有良好的表面活性,能够有效地降低油水界面张力。菌液与油相形成界面后,菌液内活性物质在界面上吸附和富集,界面张力迅速降低并达到较低的平衡值。微生物细胞的表面活性存在一个最佳温度范围,可能与微生物的最佳生长代谢温度相关。微生物细胞具有降低粘弹模量的作用,并改变了扩张粘度模量和扩张弹性模量对粘弹模量的贡献比例。
The interface behaviors between two kinds of bacterial cultures and oil phase were investigated by means of interface dilatation rheology method. The results show that bacterial cells and metab-olites with good surface activity can decrease oil/water interfacial tension effectively. After the interface between bacterial cultures and oil phase forms,bacterial surfactants begin to be absorbed and accumulate on it,which decrease interfacial tension to stable constants. And the surface activities of the bacterial cells perform with a optimum temperature range which relates to the growth temperature of the bacteria. The bacterial cells can decrease vis-coelastic modulus and change the contribution of dilatational vis-cosity and elasticity.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2008年第3期73-75,共3页
Petroleum Geology and Recovery Efficiency
基金
中国石化科技攻关项目“高含水油藏微生物驱油技术研究”(P05076)
关键词
微生物
高温菌
常温菌
表面活性
界面特性
microorganism,thermophilic bacteria,mesophilic bacteria,surface activity,interface behavior
