清洁压裂液返排液再利用驱油体系研究

doi:10.3969/j.issn.1673-8926.2017.02.020

岩性油气藏 ›› 2017, Vol. 29 ›› Issue (2): 160–166.doi: 10.3969/j.issn.1673-8926.2017.02.020

• 石油工程 • 上一篇

清洁压裂液返排液再利用驱油体系研究

周文胜^1,2, 王凯^1,2, 刘晨^1,2, 潘岳^1,2, 申健^1,2, 刘逸飞³

1. 中海油研究总院, 北京 100028;
2. 海洋石油高效开发国家重点实验室, 北京 100028;
3. 中国石油大学(华东)石油工程学院, 山东青岛 257061

收稿日期:2016-07-09 修回日期:2016-09-07 出版日期:2017-03-21 发布日期:2017-03-21
第一作者:周文胜(1972-),男,高级工程师,主要从事海上油气田开发方面的研究工作。地址:(100028)北京市朝阳区太宫南街6号。Email:zhouwsh@cnooc.com.cn。
基金资助:
“十二五”国家重大科技专项“海上稠油高效开发新技术”（编号：2011ZX05024）资助

Laboratory study on surfactant flooding system based on clean fracturing flowback fluid

ZHOU Wensheng^1,2, WANG Kai^1,2, LIU Chen^1,2, PAN Yue^1,2, SHEN Jian^1,2, LIU Yifei³

1. CNOOC Research Insitute, Beijing 100028, China;
2. State Key Laboratory of Offshore Oil Exploitation, Beijing 100028, China;
3. College of Petroleum Engineering, China University of Petroleum, Qingdao 257061, Shandong, China

Received:2016-07-09 Revised:2016-09-07 Online:2017-03-21 Published:2017-03-21

摘要/Abstract

摘要： 压裂液返排液具有液量大、处理难度大、处理费用高及环境污染等问题，为实现清洁压裂液返排液的再利用，通过对压裂液返排液体系中表面活性剂的有效质量分数、吸附性能、降低界面张力性能、改变岩石润湿性性能及提高采收率性能的室内实验评价，构建了基于清洁压裂液返排液的表面活性剂驱油体系。实验结果表明：清洁压裂液返排液体系中表面活性剂的有效质量分数为0.3%，用于目标区块脱水原油时，当其有效质量分数为0.05%～0.30% 时，油水界面张力均可达到10^-4～10^-3 mN/m 的超低数量级；该体系改变岩石润湿性性能优良，可使油湿石英片表面向弱水湿方向转变；同时，该体系动态饱和吸附量为9.53 mg/g，且水驱后动态滞留量仅相当于动态饱和吸附量的25%～33%。室内岩心模拟驱油实验反映出，在最优注入方案条件下实现采收率增值12.5%，表明该体系能够满足目标区块压裂后进一步提高采收率的要求。

Abstract: Aiming at the large volumes,great treatment difficulties,high treatment cost of fracturing flowback fluid,and its harmfulness for environmental safety,the effective mass fraction,adsorption behavior,interfacial tension behavior,wettability alteration,incremental oil recovery ability and the mechanism of surfactant flooding were studied in laboratory,and a method was established to realize the reutilization of clean fracturing flowback fluid in surfactant flooding. The results show that the effective mass fraction of clean fracturing flowback fluid is 0.3%. The oi/water interfacial tension could be lowered to 10^-4 mN/m to 10^-3 mN/m with the effective mass fraction ranging from 0.05% to 0.30%. The clean fracturing flowback fluid system has excellent wettability performance and could easily change oil-wet quartz to water-wet. Meanwhile,the dynamic adsorption is about 9.53 mg/g and the dynamic retention amount is about 25%-33% of the dynamic adsorption. The physical model experiments show that the oil recovery value can be enhanced 12.5% under optimal injection project,which confirms its excellent performances on further enhanced oil recovery for the target area after fracturing treatment.

中图分类号:

TE34

周文胜, 王凯, 刘晨, 潘岳, 申健, 刘逸飞. 清洁压裂液返排液再利用驱油体系研究[J]. 岩性油气藏, 2017, 29(2): 160–166.

ZHOU Wensheng, WANG Kai, LIU Chen, PAN Yue, SHEN Jian, LIU Yifei. Laboratory study on surfactant flooding system based on clean fracturing flowback fluid[J]. Lithologic Reservoirs, 2017, 29(2): 160–166.

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清洁压裂液返排液再利用驱油体系研究

Laboratory study on surfactant flooding system based on clean fracturing flowback fluid

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