西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (1): 140-143.

• 石油与天然气工程 • 上一篇    下一篇

S7 断块油藏表面活性剂渗流行为及驱油机理

刘爱武1,刘华1,马铭骏2,李晓南1,黄菊1   

  1. 1. 中国石化江苏油田分公司地质科学研究院,江苏扬州225012;2. 西南石油大学石油工程学院,四川成都610500
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-02-01 发布日期:2013-02-01

Flooding Mechanism and Flow Behavior of Surfactant in S7 FaultBlock Reservoir

Liu Aiwu1, Liu Hua1, Ma Mingjun2, Li Xiaonan1, Huang Ju1   

  1. 1. Geological Scientific Research Institute,Jiangsu Oilfield Company,SINOPEC,Yangzhou,Jiangsu 225012,China2. School of Petroleum Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-02-01 Published:2013-02-01

摘要: 以SN 油田S7 块油藏为例研究了表面活性剂进入多孔介质后,在岩石/油/水这个复杂系统中的渗流、驱油过
程。表面活性剂对残余油的作用机理分为乳化、运移、富集3 个方面。低界面张力体系能使油珠分散,使油珠直径变
小,使油珠易于流动。实验研究表明,注入表面活性剂后,相对渗透率曲线发生变化,水相曲线左移,液相渗透率明显
提高,残余饱和度减少。

关键词: 表面活性剂, 两相渗流, 界面张力, 驱油效率, 相渗曲线

Abstract: Taking the S7 reservoir of SN Oilfield as an example,a study is made of flow and oil displacement process of
surfactant in the complex rock / oil / water system after it enters porous media. Surfactant effects on residual oil include the
following three aspects: emulsion,migration and enrichment. Low interfacial tension system can make the oil disperse,then the
oil droplets become smaller,so it is easy to flow. Experimental studies show,after injection of surfactant,relative permeability
curve changes,phase curve shifts to the right,and liquid phase permeability increases,reducing residual saturation.

Key words: surfactant, two phase flow, interfacial tension, oil displacement efficiency, relative permeability curve