西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (5): 88-92.

• 石油与天然气工程 • 上一篇    下一篇

孤岛中二区低张力泡沫驱油体系性能研究

王其伟   

  1. 中国石化胜利油田分公司地质科学研究院,山东东营257015
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-10-01 发布日期:2012-10-01

Performance Research of Ultra-low Interfacial Tension Foam FloodingSystem of Gudao Second District

Wang Qiwei   

  1. Geological Science Research Institute of Shengli Oilfield,SINOPEC,Dongying,Shangdong 257015,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-10-01 Published:2012-10-01

摘要: 以孤岛中二区油藏为目标区块,研制了适合油藏条件的低张力泡沫驱油配方,通过泡沫性能评价、泡沫体系
与地层油水界面性能测定及物理模拟试验,研究了低张力泡沫体系的泡沫性能、油水界面性能及泡沫体系在多孔介质
中的封堵能力、提高采收率的能力、驱替过程中产出液含水变化及注采压差变化。试验证明,低张力泡沫体系集合了
泡沫及活性剂驱油体系的特点,具有强调剖及强洗油的双重作用,泡沫的高视黏度及选择性封堵提高了驱油体系的波
及面积,低张力泡沫体系的高界面活性提高了驱油效率,减少了油藏的残余油的存在,使泡沫体系更稳定,注入低张力
泡沫体系后,综合采收率提高28%。

关键词: 泡沫驱, 低张力, 采收率, 含水, 封堵压差

Abstract: In this paper,the reservoir of Gudao second district is a target area,and low interfacial tension foam flooding system
to adapt to reservoir condition is developed. Through performance evaluation of foam,foam system interfacial properties and
simulation test,foam performance,oil-water interfacial properties and block pressure in porous media,the ability to enhance
oil recovery,different pressure changes and cut water changes are studied. Testing proves that the low interfacial tension foam
flooding system has the characteristic of foam and surfactant. It can be on the double action of powerful washing and adjusting.
Foam selective plugging and high apparent viscosity increase flooding systems affected area,and the activity of low interfacial
tension foam system increase the displacement efficiency,and reduce the presence of residual oil,so that the foam system is
more stable after injecting the foam system,the integrated oil recovery increased by 28%.

Key words: foam flooding, low interfacial tension, oil recovery, cut water, block pressure