聚合物/表面活性剂二元驱扩大波及体积性能

doi:10.11885/j.issn.1674-5086.2017.04.29.01

西南石油大学学报(自然科学版) ›› 2018, Vol. 40 ›› Issue (3): 175-184.DOI: 10.11885/j.issn.1674-5086.2017.04.29.01

• 石油机械与油田化学 • 上一篇

聚合物/表面活性剂二元驱扩大波及体积性能

魏云云^1,2,3, 刘建军^1,2,4, 罗莉涛^2,5, 刘先贵^2,3, 杨正明^2,3

1. 中国科学院大学, 北京石景山 100190;
2. 中国科学院渗流流体力学研究所, 河北廊坊 065007;
3. 中国石油勘探开发研究院, 河北廊坊 065007;
4. 西南石油大学地球科学与技术学院, 四川成都 610500;
5. 清华大学环境学院, 北京海淀 100084

收稿日期:2017-04-29 出版日期:2018-06-01 发布日期:2018-06-01
通讯作者: 罗莉涛,E-mail:mhlpphlt6184@126.com
作者简介:魏云云,1988年生,女,汉族,黑龙江牡丹江人,博士研究生,主要从事油气田开发方向研究。E-mail:wei-yunyun880823@163.com;刘建军,1972年生,男,汉族,河南襄城人,教授,博士,主要从事岩土体渗流理论及工程应用方面的研究。E-mail:liu-jj0906@163.com;罗莉涛,1987年生,男,汉族,湖北襄阳人,博士,主要从事多孔介质物理化学渗流,油气田废水及油泥污染治理方面的研究。E-mail:mhlpphlt6184@126.com;刘先贵,1963年生,男,汉族,湖南常德人,教授级高级工程师,硕士,主要从事油气田开发方面的研究。E-mail:liuxiangui69@petrochina.com.cn;杨正明,1969年生,男,汉族,江苏盐城人,研究院二级专家,博士,主要从事低渗/致密油气田物理模拟、渗流理论和三次采油方面的研究工作。E-mail:yzmhxj@263.net
基金资助:
国家科技重大专项（2011ZX05013-006）；中国石油天然气股份有限公司科技攻关项目（2014B-1203）

Performance of Polymer/Surfactant Binary Flooding in Enlarging Swept Volumes

WEI Yunyun^1,2,3, LIU Jianjun^1,2,4, LUO Litao^2,5, LIU Xiangui^2,3, YANG Zhengming^2,3

1. University of Chinese Academy of Sciences, Shijingshan, Beijing 100190, China;
2. Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Science, Langfang, Hebei 065007, China;
3. PetroChina Research Institute of Petroleum Exploration & Development, Langfang, Hebei 065007, China;
4. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
5. School of Environment, Tsinghua University, Haidian, Beijing 100084, China

Received:2017-04-29 Online:2018-06-01 Published:2018-06-01

摘要/Abstract

摘要： 利用微观刻蚀、层间非均质平板、层内非均质平板模型驱油实验研究聚合物/表面活性剂二元驱扩大波及体积性能。结果表明，残余油多以膜状、岛状、喉道、盲端、柱状、簇状等6种形式存在。微观上，二元驱转向水驱无法波及的含油孔隙区域内驱替残余油；宏观上，其对高渗透区域产生封堵，迫使其进入渗流阻力较小的低渗透区域内驱替残余油，扩大波及体积效果显著，提高采收率13.4%~14.3%。二元驱通过聚合物增加驱替液黏度，使其吸附及滞留在孔隙中，降低驱替相渗透率，驱替相流度减小；二元驱对油黏度影响很小，油聚集在驱替液前缘，增加油相渗透率，油相流度变大。由此，两相流度比减小，克服注水指进，增加吸水厚度，提高波及系数，进而提高采收率。

关键词: 聚合物/表面活性剂二元驱, 残余油, 黏度, 波及体积, 采收率

Abstract: Oil displacement experiments were carried out using microetching and slabs with interlayer and intralayer heterogeneities, in order to investigate the performance of polymer/surfactant binary floods in enlarging the swept volumes. The results indicate that the residual oils exist in the form of films, islands, throats, dead ends, columns, and clusters. On the microscopic scale, the binary flooding was found to displace residual oils from oil-containing pores that could not be swept by water flooding. On the macroscopic scale, the binary flooding generated blockages in high-permeability zones, causing the floods to enter low-permeability zones with lower levels of resistance to seepage, thus displacing residual oils in these zones. Binary flooding increased recovery rates by 13.4%~14.3% as compared to water flooding, and thus had a significant effect on enlarging the swept volumes. In binary flooding, the polymer increased the viscosity of the displacing fluid, causing the latter to become adsorbed and retained in the pores. This effectively decreased the permeability and flow rate of the displacement phase. Meanwhile, binary flooding had a very small impact on oil viscosity, and therefore the oils aggregated along the leading edge of the displacing fluid, which increased the permeability and flow rate of the oil phase. Therefore, such binary flooding reduces the mobility ratio, prevents viscous fingering, and increases water intake thickness and conformance factor, thus improving oil recovery rates.

Key words: polymer/surfactant binary flooding, residual oils, viscosity, swept volume, recovery rate

中图分类号:

TE357.46

魏云云, 刘建军, 罗莉涛, 刘先贵, 杨正明. 聚合物/表面活性剂二元驱扩大波及体积性能[J]. 西南石油大学学报(自然科学版), 2018, 40(3): 175-184.

WEI Yunyun, LIU Jianjun, LUO Litao, LIU Xiangui, YANG Zhengming. Performance of Polymer/Surfactant Binary Flooding in Enlarging Swept Volumes[J]. 西南石油大学学报(自然科学版), 2018, 40(3): 175-184.

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聚合物/表面活性剂二元驱扩大波及体积性能

Performance of Polymer/Surfactant Binary Flooding in Enlarging Swept Volumes

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