西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (1): 155-159.

• 油气化学工程与化工 • Previous Articles     Next Articles

Comparative Study For The Properties Of Different Surfactant/PolymerBinary Flooding Systems

Jing bo1，2, Zhang Jian1，2, Lü Xin1，2, Jiang Weidong1，2, Feng Guozhi1，2   

  1. 1. State Key Lab of Offshore Oil Exploitation，Dongcheng，Beijing 100027，China2. Research Institute，CNOOC，Chaoyang，Beijing 100027，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-02-01 Published:2013-02-01

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Abstract: Based on the different molecular structures，interaction mechanisms of surfactant interaction with polymer and
high-valent metal ions were discussed. The bonding ability of calcium ions ranks as SDS > HPAM >SDBS，which results in
the different viscosities of surfactant/polymer binary systems. Experiments show that oil displacement efficiency was mainly
influenced by their viscosity and interfacial tension. However，for similar property systems，the surfactant with bigger molecular
surface cross-sectional area is more helpful to enhance oil displacement efficiency. To some extent，such surfactant would
maintain original interfacial tension while flooding.

Key words: partially hydrolyzed polyacrylamide, surfactant, binary flooding system, viscosity, interfacial tension, oil displacementefficiency