油气藏评价与开发 ›› 2018, Vol. 8 ›› Issue (1): 44-48.

• 石油工程 • 上一篇    下一篇

低渗透裂缝型油藏多轮次调驱物理模拟实验研究

赵阳1,吴景春1,石芳1,杨明2   

  1. 1. 东北石油大学提高采收率教育部重点实验室,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 163318
  • 收稿日期:2017-06-05 发布日期:2018-12-05 出版日期:2018-02-26
  • 作者简介:赵阳(1987—),男,在读博士研究生,提高采收率原理与技术研究。
  • 基金资助:
    国家自然科学基金项目“凝胶与化学剂段塞式多轮次交替注入调驱技术应用研究”(51274070);东北石油大学研究生创新科研项目“微生物体系在多孔介质中滞留迁移规律研究”(YJSCX2016-008NEPU)

Physical simulation flooding test of multi-turn profile control in low permeability reservoir

Zhao Yang1,Wu Jingchun1,Shi Fang1,Yang Ming2   

  1. 1. Key laboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing, Heilongjiang 163318, China
    2. NO.3 Production Plant of PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163318, China
  • Received:2017-06-05 Online:2018-12-05 Published:2018-02-26

摘要:

针对某典型低渗透率多裂缝型区块注水开发效果较差的现状,在非常规储层动态模拟系统和低渗透裂缝型三维平板岩心制作技术的基础上,开展了九组大型室内物理模拟驱油实验,研究了不同体系、不同轮次对低渗透裂缝型储层的调驱效果。实验结果表明,弱凝胶体系可以更好的适用低渗透裂缝型油藏环境,对储层中的微裂缝进行有效封堵,优选出“0.1 %浓度的800万分子量聚合物+0.1 %浓度的交联剂调剖体系溶液+保护段塞”调驱体系。该体系三轮次注入采收率可提高31.35 %,同时多轮次调驱效果呈逐次递减的现象,需要结合国际油价和现场实际情况,合理地选取注入轮次。

关键词: 低渗透, 裂缝油藏, 注入轮次, 调驱, 室内驱油实验

Abstract:

According to the poor water flood development effects of a typical low permeability multi-fractured block, and based on the dynamic simulation experiment system and the production technology of the fractured 3D flat cores with low permeability of the unconventional reservoir, we carried out 9 groups of physical simulation flooding experiments to research the profile control effects of the fractured reservoir with low permeability in the different injection systems and injection rounds. The result showed that the weak gel system better fitted the fractured reservoir with low permeability, and plugged the micro fractures effectively. In addition, the optimized profile control system is composed of 0.1 % concentration of 8 million molecular weight polymer, 0.1 % concentration of the profile system solution of cross linking agent, and the protection slug. It improved 31.35 % of the oil recovery by three injection rounds. Furthermore, the effects of the multi-round profile control decreased. The injected rounds should be selected reasonably according to the international oil price and the actual situation on site.

Key words: low permeability, fractured reservoir, injection round, profile control, indoor displacement experiment

中图分类号: 

  • TE357