西南石油大学学报(自然科学版)

• 油气化学工程 • 上一篇    下一篇

二元驱油水界面Marangoni 对流启动残余油机理

罗莉涛1,2,3 *,刘先贵3,廖广志4,刘卫东3,崔彬5   

  1. 1. 中国科学院渗流流体力学研究所,河北廊坊065007;2. 中国科学院大学,北京石景山100190;
    3. 中国石油勘探开发研究院廊坊分院,河北廊坊065007;4. 中国石油勘探与生产分公司,北京东城100011;
    5. 中国石化华东分公司,江苏南京210019
  • 出版日期:2015-08-01 发布日期:2015-08-01
  • 通讯作者: 罗莉涛,E-mail:mhlpphlt6184@126.com
  • 基金资助:

    国家科技重大专项(2011ZX05031);国家高技术研究发展计划(2013AA064402)。

The Mobilization Mechanism of Residual Oil by Marangoni Convection Caused by Binary Flooding

Luo Litao1,2,3*, Liu Xiangui3, Liao Guangzhi4, Liu Weidong3, Cui Bin5   

  1. 1. Institute of Porous Flow and Fluid Mechanics,Chinese Academy of Sciences,Langfang,Hebei 065007,China
    2. University of Chinese Academy of Sciences,Shijingshan,Beijing 100190,China
    3. Langfang Branch of Research Institute of Petroleum Exploration and Development,CNPC,Langfang,Hebei 065007,China
    4. PetroChina Exploration & Production Company China,Dongcheng,Beijing 100011,China
    5. East China Company,SINOPEC,Nanjing,Jiangsu 210019,China
  • Online:2015-08-01 Published:2015-08-01

摘要:

二元驱的Marangoni 对流在启动油藏残余油方面有重要作用,研究其微观机理对更好地应用二元驱技术提高
采收率具有重大意义。设计了验证Na2CO3 溶液、KPS 表活剂溶液及二者的二元驱溶液与原油接触后产生Marangoni
对流效果的实验和利用能产生强Marangoni 对流的二元驱进行微观仿真模型驱油的实验,分析了二元驱中油水界面
Marangoni 对流启动残余油微观机理。结果表明:Na2CO3 溶液、KPS 表活剂溶液及二元混合溶液与原油接触后都能产
生Marangoni 对流效果,且浓度越大,Marangoni 对流效果越好;Na2CO3 和KPS 对于产生Marangoni 对流有协同作用;
1.2%Na2CO3 和0.3%KPS 二元驱产生的强Marangoni 对流引起了界面扰动和自发乳化作用,对启动膜状、岛状和盲端
等残余油均有显著效果。建议油田采用能够产生强Marangoni 对流的二元驱。

关键词: 二元驱, Marangoni 对流, 残余油, 界面扰动, 自发乳化

Abstract:

Marangoni convection of the binary flooding plays an important role in mobilizing residual oil in reservoir. Researches
on the microscopic mechanism will contribute to the application of binary flooding to enhanced oil recovery. In this paper,
the authors used Na2CO3 solution,KPS surface active agent solution and mixed solution to contact with crude oil respectively.
The experiments verified their marangoni convection effect. Microscopic simulation model of oil displacement experiment was
made with Na2CO3 and KPS binary flooding that result in strong Marangoni convection. The results show Na2CO3 solution,
KPS surface active agent solution and mixed solution could all have marangoni convection effect. The greater the concentration
is,the better the effect of marangoni convection is. Na2CO3 and KPS have synergy for marangoni convection.The binary
flooding mixed with 1.2% Na2CO3 and 0.3% KPS can cause the interfacial turbulence and spontaneous emulsification. It has a
significant effect on mobilizing residual oil in membrane,island and blind side. The binary flooding which can produce strong
marangoni convection should be used in the oil field.

Key words: binary flooding, Marangoni convection, residual oil, interfacial turbulence, spontaneous emulsification