调剖剂/调驱剂组合方式与油藏适应性研究
DOI:
作者:
作者单位:

1.东北石油大学 提高油气采收率教育部重点实验室 黑龙江 大庆;2.中海石油中国有限公司 天津分公司研究院 天津 塘沽

作者简介:

通讯作者:

中图分类号:

TE357.46

基金项目:

中海石油(中国)有限公司天津分公司重点攻关课题(CCL2019TJT0NST2286)经费资助。


Profile control agent/displacement control agent combination method and reservoir adaptability research—Taking the reservoir geology and fluid conditions of Bohai Oilfield as an example
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为明确调剖剂与调驱剂组合方式注入目标储层的可行性,通过室内实验计算调剖剂与调驱剂在岩心中的阻力系数、残余阻力系数以及封堵率,分析其压力特征和分流率特征,确定调剖与调驱组合方式与目标储层适应性的优劣。结果表明:在70℃、0.9 mL/min的注入速度下,初低粘延缓交联型调剖剂可进入岩心最低渗透率的范围应在1000′10-3mm2~3000′10-3mm2之间,且封堵率大于95%,封堵性能和液流转向效果均较好;“纳米型”和“超分子型A”聚合物微球非连续性调驱剂可进入岩心最低渗透率的范围均应在500′10-3mm2~1000′10-3mm2之间,且“超分子型A”调驱剂在岩心中的水化膨胀性能、深部调驱能力要优于“纳米型”调驱剂。调剖/调驱组合方式提高低渗层的动用程度随着储层非均质性的增强而降低,级差大于8后,调剖/调驱组合方式的液流转向效果有所减弱。

    Abstract:

    In order to clarify the feasibility of injection of profile control agent and profile control agent into target reservoir. The resistance coefficient, residual resistance coefficient and plugging rate of profile control agent and profile control agent in rock core are calculated through laboratory experiment, and the characteristics of pressure and diversion rate are analyzed, and the advantages and disadvantages of combination mode of profile control and displacement and target reservoir are determined. The results showed that: at 70 ℃, at the injection rate of 0.9 ml/min, the minimum permeability range of the initial low viscosity delayed crosslinking profile control agent should be between 1000′10-3mm2 ~ 3000′10-3mm2, and the plugging rate is more than 95%. The plugging performance and fluid diversion effect are good. The minimum permeability range of "Nami type and "Supermolecule type A between 500′10-3mm2 ~ 1000′10-3mm2. In addition, the upermolecule type A profile control and displacement agent has better hydration expansion performance and deep profile control and displacement ability than profile control and displacement agent. With the increase of reservoir heterogeneity, the production degree of low-permeability reservoir increases with the increase of reservoir heterogeneity. When the stage difference is greater than 8, the fluid diversion effect of profile control / profile control flooding combination mode is weakened.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-11-21
  • 最后修改日期:2021-03-20
  • 录用日期:2021-03-29
  • 在线发布日期:
  • 出版日期:
点击这里给我发消息

点击这里给我发消息