特种油气藏 ›› 2023, Vol. 30 ›› Issue (1): 87-92.DOI: 10.3969/j.issn.1006-6535.2023.01.012

• 油藏工程 • 上一篇    下一篇

微生物+化学复合驱提高高凝油油藏采收率室内实验

温静, 肖传敏, 郭斐, 杨灿, 马静, 李晓风, 易文博   

  1. 中国石油辽河油田分公司,辽宁 盘锦 124010
  • 收稿日期:2022-03-03 修回日期:2022-10-28 出版日期:2023-02-25 发布日期:2023-03-24
  • 通讯作者: 肖传敏(1978—),男,高级工程师,2001年毕业于江汉石油学院石油工程专业,2004年毕业于长江大学油气田开发工程专业,获硕士学位,现从事油田提高采收率研究工作。
  • 作者简介:温静(1971—),女,企业首席专家,教授级高级工程师,1992年毕业于大庆石油学院油藏工程专业,现从事油田开发研究工作。
  • 基金资助:
    中国石油科技重大专项“稀油高凝油大幅度提高采收率关键技术研究与应用”(2017E-1603)

Laboratory Test of Microbial Chemical Compound Flooding to Enhance Recovery Efficiency of High Condensate Oil Reservoirs

Wen Jing, Xiao Chuanmin, Guo Fei, Yang Can, Ma Jing, Li Xiaofeng, Yi Wenbo   

  1. PetroChina Liaohe Oilfield Company, Panjin, Liaoning 124010, China
  • Received:2022-03-03 Revised:2022-10-28 Online:2023-02-25 Published:2023-03-24

摘要: 针对高凝油油藏析蜡冷伤害、水驱采收率低的问题,运用微生物高通量测序分析、化学驱实验评价方法,利用岩心物理模拟与CT扫描等手段,提出了微生物+化学复合驱组合提高高凝油采收率技术,研制了微生物化学复合驱配方,该体系兼有化学驱大幅度提高驱油效率及微生物降低原油蜡质组分双重优点,最后通过物模实验优化了微生物与化学驱配方段塞组合。实验结果表明:微生物+化学复合驱较水驱提高驱油效率35.19个百分点,较单一化学复合驱可提高驱油效率7.27个百分点,单位质量聚合物增油量提高了1.16 t/t。该研究为高凝油油藏开发后期方式转换、提高采收率提供有效接替技术。

关键词: 微生物, 化学复合驱, 提高采收率, 高凝油, 沈84-安12块

Abstract: In view of the problems of high condensate oil reservoir, cold damage caused by wax precipitation and low recovery efficiency by water flooding, were the microbial high throughput sequencing analysis and experimental evaluation method for chemical flooding and used the core physical simulation and CT scanning and other means to propose the enhanced high pour-point oil recovery technology through microbial + chemical compound flooding combination and research the microbial-chemical compound flooding formula. The system has the advantages of chemical flooding greatly improving the oil displacement efficiency and microbe reducing the waxy composition of crude oil. Finally, the slug combination of microbial and chemical flooding formula is optimized by physical model experiment. The experimental result shows that: The microbial + chemical compound flooding can improve the oil displacement efficiency by 35.19% than the water flooding, and if compared with the single chemical compound flooding, it can improve the oil displacement efficiency by 7.27%, and the oil increment increases by1.16 t/t. This research provides an effective replacement technology for the mode conversion and enhanced oil recovery in the late development stage of high condensate oil reservoir.

Key words: Microbial, chemical compound flooding, enhanced oil recovery, high condensate oil, Block S84-A12

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