Editorial office of ACTA PETROLEI SINICA ›› 2011, Vol. 32 ›› Issue (6): 1021-1025.DOI: 10.7623/syxb201106014

• Petroleum Exploration • Previous Articles     Next Articles

Interface properties of the foam system with ultra-low interfacial tension

LIU Hongsheng   

  • Received:2011-05-09 Revised:2011-08-21 Online:2011-11-25 Published:2012-01-17

超低界面张力泡沫体系界面性能

刘宏生   

  1. 大庆油田有限责任公司勘探开发研究院  黑龙江大庆  163712
  • 通讯作者: 刘宏生
  • 作者简介:刘宏生,男,1979年2月生,2006年获中国石油大学(北京)工学硕士学位,现为大庆油田有限责任公司勘探开发研究院工程师,主要从事泡沫复合驱机理方面的研究。
  • 基金资助:

    中国石油天然气股份有限公司科技攻关项目(06011421)资助。

Abstract:

The present paper investigated interface and foam properties of a foaming agent system by hanging drop and air-blowing methods and examined the influence of foaming agent (DWS) and hydrolyzed polyacrylamide (HPAM) concentrations on interfacial tension, surface dilatational modulus and foam properties. The experiment result shows that ultra-low interfacial tension can be formed when the mass fraction of DWS is 0.1%~0.4% and HPAM with a concentration below 1500 mg/kg in a foaming agent system mixed together with Daqing crude oils. Interfacial tension tends to increase when the HPAM concentration in a foaming agent system is high. The surface dilatational modulus of DWS appears to increase with its concentration and reach to the maximum at a lower concentration of DWS. Adding HPAM in a foaming agent system is helpful in enhancing the surface dilatational modulus of DWS. The foamability and foam stability of a foaming agent system increase with the increase of DWS concentration, the increase of the HPAM concentration is helpful to the enhancement of foam stability but reduces foamability correspondingly.

Key words: foam system, polymer, ultra-low interfacial tension, surface dilatational modulus, foamability, foam stability

摘要:

利用悬挂滴法和鼓气法,研究了发泡剂体系的界面性能和泡沫性能,考察了发泡剂体系中发泡剂(DWS)和聚合物(HPAM)浓度对界面张力、表面扩张模量及泡沫性能的影响。实验结果表明:发泡剂体系中DWS质量分数为0.1%~0.4%,HPAM浓度低于1500 mg/kg 时,与大庆原油可以形成超低界面张力。当发泡剂体系中HPAM浓度较大时,界面张力呈现增大趋势。DWS表面扩张模量随浓度增加而增加,在较低浓度出现极大值,且极大值处表面扩张模量值较大。发泡剂体系中加入HPAM有利于提高DWS的表面扩张模量。发泡剂体系的起泡性和稳泡性随DWS浓度增加而增强。发泡剂体系中HPAM浓度增加,泡沫稳定性增强,但其起泡性降低。

关键词: 泡沫体系, 聚合物, 超低界面张力, 表面扩张模量, 起泡性, 泡沫稳定性