石油学报 ›› 1995, Vol. 16 ›› Issue (1): 53-60.DOI: 10.7623/syxb199501008

• 油田开发 • 上一篇    下一篇

黑液体系驱油研究

赵福麟, 孙士孝, 崔桂陵, 秦积舜, 张贵才, 郭云尧, 孙铭勤   

  1. 石油大学 华东
  • 收稿日期:1993-09-06 修回日期:1993-11-17 出版日期:1995-01-25 发布日期:2013-07-08
  • 作者简介:赵福麟,1957年毕业于北京石油学院.现任石油大学教授.通讯处:山东省东营市.邮政编码:257062.

A STUDY ON OIL DISPLACEMENT kY A BLACK LIQUOR SYSTEM

Zhao Fulin, Sun Shixiao, Cui Guiling, Qin Jishun, Zhang Guicai, Guo Yunyao, Sun Mingqin   

  1. University of Petroleum, Huadong
  • Received:1993-09-06 Revised:1993-11-17 Online:1995-01-25 Published:2013-07-08

摘要: 黑液是碱法造纸时所产生的废液,具有潜在碱的性质,可作为三元复合驱的一种组分,配成黑液-表面活性剂-聚合物体系(简称黑液体系),用于驱油。本文用准三组分相图,针对新疆试验区条件,研究了这一体系的采收率增值等值图,得到优化配方。通过黑液体系各种性质等值图的研究,结合驱油产出液的分析结果和微观驱油的直接观察,证实了黑液体系主要通过低界面张力、乳化-携带、乳化-捕集、自发乳化、表面亲水性减小、刚性膜软化等机理提高原油的采收率。

关键词: 废水, 三元复合驱, 驱油机理, 提高采收率, 配方

Abstract: Black liquoris the waste water produced from alkaline papermaking mills. It behaves like a latent alkaline. Black liquor system is a combination of black liquor,surfactant polymercan be used as an oil displacement agent in a combination flooding. According to the conditions of Xinjiang pilot area,the optimum formula(formula 2-3) of black liquor system hasbeen ohtained by an analysis of the increment chorograms of recovery efficiency in the pseu-dotricomponent phase diagram. Main mechanisms in such a displacement include low interfacial tension,emulsification-entrainment, emulsification-entraprnent,spontaneous emulsification,reduction of water wettability,and softening of rigid membrane etc. Enhanced oil recovery of black liquor system have been confirmed by a combination of the study of variouschorograms of black liquor system with analysis of effluents of oil displacement and a directobservation of oil displacement in microscopic model.

Key words: waste water, ternary combination flooding, oil displacement mechanism, enhanced oil recovery, formula