聚驱后油层提高采收率驱油方法

doi:10.12108/yxyqc.20190216

岩性油气藏 ›› 2019, Vol. 31 ›› Issue (2): 143–150.doi: 10.12108/yxyqc.20190216

聚驱后油层提高采收率驱油方法

韩培慧^1,2, 闫坤¹, 曹瑞波², 高淑玲², 佟卉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勘探开发研究院, 黑龙江大庆 163712

收稿日期:2018-11-15 修回日期:2018-12-29 出版日期:2019-03-21 发布日期:2019-03-21
第一作者:韩培慧(1963-),男,博士,教授级高级工程师,博士生导师,主要从事聚驱后提高采收率的教学与研究工作。地址:(163318)黑龙江省大庆市高新技术开发区发展路199号东北石油大学石油工程学院。Email:hanph@petrochina.com.cn。
基金资助:
中国石油天然气股份有限公司重大科技专项“化学驱后提高采收率技术研究与试验”（编号：2016E-0207）资助

Oil displacement methods for enhanced oil recovery after polymer flooding

HAN Peihui^1,2, YAN Kun¹, CAO Ruibo², GAO Shuling², TONG Hui¹

1. School of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;
2. Research Institute of Exploration and Development, PetroChina Daqing Oilfield Company Ltd., Daqing 163318, Heilongjiang, China

Received:2018-11-15 Revised:2018-12-29 Online:2019-03-21 Published:2019-03-21

摘要/Abstract

摘要： 大庆油田已开展了聚驱后高浓度聚驱和三元复合驱现场试验，这2种驱油方法虽可取得一定的技术效果，但聚合物用量大、经济效益低。为实现低成本高效开采，在深刻认识聚驱后油层特点的基础上，依据堵调驱相结合的技术路线，应用物理模拟实验和配方优化技术，进一步研究了3种新型驱油方法：①"调堵剂+驱油体系"组合注入驱油方法，该方法通过低初黏凝胶调剖后再注入三元体系，特点是可大幅降低聚合物用量，较单纯三元复合驱可提高采收率2.1%，节省聚合物用量25%；②研发了非均相复合驱油体系，该体系由连续相三元溶液和非连续相PPG颗粒组成，可实现动态调整、动态驱替，聚驱后非均相复合驱可提高采收率13.6%，较三元复合驱可提高采收率3.4%；③研发了聚驱后插层聚合物复合驱驱油方法，插层聚合物具有残余阻力系数大于阻力系数的特点，调堵能力强于普通聚合物，聚驱后可提高采收率15.9%。鉴于上述3种新型驱油方法室内实验取得的较好效果，且较普通三元复合驱大幅降低化学剂用量，拟开展现场试验以提高油田采收率。

关键词: 聚驱后, 现场试验, 新型驱油方法, 提高采收率

Abstract: Field tests of high concentration polymer flooding and ASP flooding after polymer flooding have been carried out in Daqing Oilfield. Although the above two methods can achieve technical effects, the amount of polymer used is large and the economic benefit is low. In order to realize low-cost and high-efficiency production,on the basis of deep understanding of reservoir characteristics after polymer flooding,according to the combination of plugging, profile control and flooding technology,three new oil displacement methods were further studied by physical simulation experiment and formula optimization technology. (1) The combined injection and oil displacement method of "plugging agent+oil displacement system",which was injected into ASP system through low initial gel particles and then injected into the system of ASP. The polymer can be greatly reduced,and the recovery factor is increased by 2.1% and the polymer consumption is 25% compared with the ASP flooding. (2) Heterogeneous composite flooding system composed by continuous phase ternary solution and discontinuous phase PPG, which can realize dynamic adjustment and displacement. After polymer flooding, heterogeneous composite flooding can improve oil recovery by 13.6%, which is 3.4% more than that of ASP flooding. (3) Composite flooding with intercalated polymer flooding after polymer flooding was developed. The residual resistance coefficient of intercalated polymer is greater than resistance coefficient,and the plugging control ability is stronger than that of common polymer. After polymer flooding,the oil recovery can be increased by 15.9%. In view of the good results obtained in laboratory experiments of the three new oil displacement methods mentioned above and the significant reduction of chemical agent dosage compared with conventional ASP flooding,it is proposed to carry out field tests to verify the technical and economic results.

Key words: after polymer flooding, field test, new oil displacement methods, enhanced oil recovery

中图分类号:

TE357

韩培慧, 闫坤, 曹瑞波, 高淑玲, 佟卉. 聚驱后油层提高采收率驱油方法[J]. 岩性油气藏, 2019, 31(2): 143–150.

HAN Peihui, YAN Kun, CAO Ruibo, GAO Shuling, TONG Hui. Oil displacement methods for enhanced oil recovery after polymer flooding[J]. Lithologic Reservoirs, 2019, 31(2): 143–150.

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聚驱后油层提高采收率驱油方法

Oil displacement methods for enhanced oil recovery after polymer flooding

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