负电性高效聚合物降解剂研究及矿场先导试验

doi:10.3969/j.issn.1006-6535.2024.03.022

特种油气藏 ›› 2024, Vol. 31 ›› Issue (3): 167-174.DOI: 10.3969/j.issn.1006-6535.2024.03.022

• 钻采工程 • 上一篇

负电性高效聚合物降解剂研究及矿场先导试验

闻宇晨¹, 侯吉瑞¹, 娄泽洋², 潘以诺¹, 屈鸣³

1.中国石油大学(北京)提高采收率研究院,北京 102249;
2.中国石油青海油田分公司,青海海西 816400;
3.东北石油大学三亚海洋油气研究院,海南三亚 572024

收稿日期:2023-04-26 修回日期:2024-03-20 出版日期:2024-06-25 发布日期:2024-07-26
通讯作者: 侯吉瑞(1965—),男,研究员,1983年毕业于延边大学化学专业,2007年毕业于大连理工大学应用化学专业,获博士学位,现从事油田化学、提高采收率方面的研究工作。
作者简介:闻宇晨(1994—),男,2016年毕业于西南石油大学石油工程专业,现为中国石油大学(北京)石油与天然气工程专业在读博士研究生,主要从事油田化学、提高采收率方面的研究工作。
基金资助:
国家自然科学基金“低渗/特低渗油藏片状纳米材料-微米自适应桥接颗粒协同控窜-调流-驱油理论研究”(52174046)

Study on Electronegative High-efficiency Polymer Degrading Agent and Field Pilot Test

Wen Yuchen¹, Hou Jirui¹, Lou Zeyang², Pan Yinuo¹, Qu Ming³

1. EOR Research Center (Beijing) China University of Petroleum, Beijing 102249, China;
2. PetroChina Qinghai Oilfield Company, Haixi, Qinghai 816400, China;
3. NEPU Sanya Offshore Oil & Gas Research Institute, Sanya, Hainan 572024, China

Received:2023-04-26 Revised:2024-03-20 Online:2024-06-25 Published:2024-07-26

摘要/Abstract

摘要： 针对聚合物驱过程中长期注聚合物导致的聚合物堵塞问题,研发了一种负电性高效聚合物降解剂。采用电子显微镜、Zeta电位仪和多重光散射仪等仪器,研究了降解剂的微观形貌特征、体系稳定性、降解性能和降黏性能,评价了降解剂在多孔介质中的动态降解效果。结果表明:降解剂的最佳用量为质量分数为1.0%,该用量下聚合物降黏率和降解率均能达到95%以上,对聚合物及聚合物胶团的降解能力强,解堵效果明显。该降解剂腐蚀性弱,对井筒和管道损害小。在锦州9-3油田W4-4井开展了注聚合物井解堵矿场试验,验证了负电性高效聚合物降解剂的矿场解堵效果。该聚合物降解剂能够为聚合物驱高效开发提供技术支持。

关键词: 聚合物驱, 聚合物降解剂, 堵塞, 降黏率, 降解率, 提高采收率

Abstract: An electronagtive high-efficiency polymer degradation agent is developed in this study to address the problem of polymer plugging caused by long-term polymer injection during polymer flooding. In this study, the microscopic morphology, system stability, degradation performance, and viscosity reduction performance of the degradation agent were studied by means of electron microscopy, Zeta potentiometer, and multi-angle light scattering instrument, and the dynamic degradation effect of the degradation agent in porous media was evaluated. The results show that the optimal dosage of the degradation agent is 1% by mass fraction, both the viscosity reduction rate and degradation rate of the polymer can reach over 95% at this dosage. The degradation agent exhibits strong capacity of degradation for polymers and polymer clusters, with a significant effect on removing blockage. And on the other hand, the degradation agent is featured with low corrosiveness and causes little damage to wellbore and pipelines. A field test of plugging removal by polymer injection was conducted in Well W4-4 of the JZ9-3 Oilfield, and the field plugging removal effect of electronegative high-efficiency polymer degradation agent was verified. This polymer degradation agent can provide technical support for the efficient development of polymer flooding.

Key words: polymer flooding, polymer degradation agent, plugging, viscosity reduction rate, degradation rate, enhanced oil recovery

中图分类号:

TE357.46

闻宇晨, 侯吉瑞, 娄泽洋, 潘以诺, 屈鸣. 负电性高效聚合物降解剂研究及矿场先导试验[J]. 特种油气藏, 2024, 31(3): 167-174.

Wen Yuchen, Hou Jirui, Lou Zeyang, Pan Yinuo, Qu Ming. Study on Electronegative High-efficiency Polymer Degrading Agent and Field Pilot Test[J]. Special Oil & Gas Reservoirs, 2024, 31(3): 167-174.

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负电性高效聚合物降解剂研究及矿场先导试验

Study on Electronegative High-efficiency Polymer Degrading Agent and Field Pilot Test

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