高浓度聚驱采出液乳化行为及电化学脱水方法

doi:10.11885/j.issn.1674-5086.2015.05.06.04

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (1): 177-184.DOI: 10.11885/j.issn.1674-5086.2015.05.06.04

• 石油机械与油田化学 • 上一篇

高浓度聚驱采出液乳化行为及电化学脱水方法

张宏奇^1,2, 刘扬¹, 王志华^1,3, 徐萌萌¹

1. 东北石油大学石油工程学院, 黑龙江大庆 163318;
2. 中国石油大庆油田有限责任公司第三采油厂, 黑龙江大庆 163113;
3. 中国石油大庆油田博士后科研工作站, 黑龙江大庆 163458

收稿日期:2015-05-06 出版日期:2017-02-01 发布日期:2017-02-01
通讯作者: 王志华,E-mail:zhihua_wang@nepu.edu.cn
作者简介:张宏奇,1973年生,男,汉族,黑龙江大庆人,高级工程师,硕士,主要从事油田地面工程建设的规划设计与管理工作。E-mail:zhanghongqi@petrochina.com.cn;刘扬,1957年生,男,汉族,河北秦皇岛人,教授,博士生导师,主要从事石油工程领域的优化、节能及安全评估等方面的研究。E-mail:ly001@nepu.edu.cn;王志华,1981年生,男,汉族,甘肃会宁人,副教授,博士,主要从事油气集输工艺理论与技术及采出液处理方面的研究。E-mail:zhihua_wang@nepu.edu.cn;徐萌萌,1994年生,女,汉族,吉林松原人,主要从事油气储运工程方面的研究。E-mail:xumengmengdawn@126.com
基金资助:
国家自然科学基金优秀青年科学基金（51404068）；黑龙江省普通本科高等学校青年创新人才培养计划（UNPYSCT-2015074）；国家自然科学基金重点项目（51534004）。

Emulsification Behavior and Electro-chemical Dehydration Method of Produced Liquid in High Concentration Polymer Flooding Wells

ZHANG Hongqi^1,2, LIU Yang¹, WANG Zhihua^1,3, XU Mengmeng¹

1. School of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
2. Oil Recovery Plant No. 3, Daqing Oilfield Company Limited, PetroChina, Daqing, Heilongjiang 163113, China;
3. Post-doctoral Research Station of Daqing Oilfield, PetroChina, Daqing, Heilongjiang 163458, China

Received:2015-05-06 Online:2017-02-01 Published:2017-02-01

摘要/Abstract

摘要： 针对高浓度聚驱采出液油水分离效率及其给常规交-直流电场带来的冲击，开展了该类采出液的乳化行为及脱水方法研究，研究中综合了集输工况条件下的采出液转相特征、电负性、乳化油珠粒径分布、界面性质、乳化体系的微观形态及瓶试法油水分离实验，并基于所建立模拟装置评价了脉冲供电脱水对高浓度聚驱采出液破乳脱水的适应性。结果表明，高浓度聚驱采出液复杂的乳化行为与含聚浓度直接相关，含聚浓度上升使其电负性增强，转相点呈不同程度降低，且由于促进了黏弹性界面膜的形成，乳化粒子聚并和相分离的难度增大；辅以化学破乳的脉冲供电电场脱水工艺能有效改善分离效果，提高脱水操作的稳定性。

关键词: 高浓度聚合物驱, 乳化特性, 破乳脱水, 采出液, 大庆油田

Abstract: Owing to the oil-water separation efficiency of produced liquid with high concentration polymer flooding and its impact on conventional AC-DC electric fields, the emulsification behavior and dehydration method of these types of emulsions were studied. Many evaluation methods were used for the gathering conditions, such as phase-inversion characteristics, electronegativity, distribution of emulsified oil-particle diameters, interface properties, micro-morphology of emulsions, and oil-water separation bottle tests. A dehydration experimental device with a pulsed power supply was established, and the adaptability of high concentration polymer flooding produced liquid was assessed. The results indicate that the emulsified behavior of produced liquid in high concentration polymer flooding wells was closely related to an increase in polymer concentration. Increasing the polymer concentration enhanced the electronegativity and decreased the phase inversion points of emulsions to different degrees. Furthermore, difficulties of coalescence and phase separation increased because the high polymer concentration promoted the formation of a viscoelastic interfacial film. The oil-water separation effect can be improved in the dehydration process of a pulse power supply electric field with demulsifiers, and the dehydration operational stability can be perfected.

Key words: high concentration polymer flooding, emulsification property, dehydration, produced liquid, Daqing Oilfield

中图分类号:

TE863

张宏奇, 刘扬, 王志华, 徐萌萌. 高浓度聚驱采出液乳化行为及电化学脱水方法[J]. 西南石油大学学报(自然科学版), 2017, 39(1): 177-184.

ZHANG Hongqi, LIU Yang, WANG Zhihua, XU Mengmeng. Emulsification Behavior and Electro-chemical Dehydration Method of Produced Liquid in High Concentration Polymer Flooding Wells[J]. 西南石油大学学报(自然科学版), 2017, 39(1): 177-184.

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高浓度聚驱采出液乳化行为及电化学脱水方法

Emulsification Behavior and Electro-chemical Dehydration Method of Produced Liquid in High Concentration Polymer Flooding Wells

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