油气藏评价与开发 ›› 2019, Vol. 9 ›› Issue (2): 56-59.

• 石油工程 • 上一篇    下一篇

聚驱相对渗透率曲线变化规律实验研究

程大勇,李彦来,房娜,郑华,朱志强   

  1. 中海石油(中国)有限公司天津分公司渤海石油研究院,天津 300459
  • 收稿日期:2018-08-02 出版日期:2019-04-26 发布日期:2019-05-07
  • 作者简介:程大勇(1984—),男,工程师,油田管理、开发方案设计及提高采收率研究。
  • 基金资助:
    国家科技重大专项"渤海油田高效开发示范工程"(2016ZX05058-001);国家科技重大专项"大型油气田及煤层气开发"(2011ZX05057-001)

Experimental study on variation law of relative permeability curves of polymer flooding

Cheng Dayong,Li Yanlai,Fang Na,Zheng Hua,Zhu Zhiqiang   

  1. Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China
  • Received:2018-08-02 Online:2019-04-26 Published:2019-05-07

摘要:

聚驱相对渗透率曲线是聚驱油田进行开发指标预测的重要基础。针对海上L油田因缺乏聚驱相对渗透率实测资料导致的数值模拟精度不高的现状,采用非稳态法测定了聚驱相对渗透率曲线,对比不同岩心渗透率和聚合物浓度下相对渗透率曲线的形态特征,总结聚驱相对渗透率曲线的变化规律。实验结果表明,聚驱相渗曲线随着岩心渗透率升高,相同含水饱和度时的油相相对渗透率降低,残余油饱和度降低;随着聚合物浓度升高,相同含水饱和度时的油相相对渗透率升高,残余油饱和度降低;聚驱冲刷前期,残余油饱和度迅速下降,中后期残余油饱和度下降速度明显变缓。研究成果可为海上聚合物驱油田精细油藏数值模拟、开发方案编制提供指导和依据。

关键词: 聚合物驱, 相对渗透率, 聚合物浓度, 渗透率测定

Abstract:

The relative permeability curves of polymer flooding are important bases for the development index predicting the polymer flooding oilfield. Aiming at the low numerical simulation accuracy caused by the lack of the relative permeability of the polymer flooding in the offshore L oilfield, we determined the relative permeability curves of the polymer flooding by the non-steady-state method to compare the relative permeability of different core permeability and polymer concentration. The variation law of relative permeability curve of the polymer flooding was summarized as well. The experimental results showed that the permeability curves of the polymer flooding increased with the core permeability, the relative permeability of the oil phase decreased with the same water saturation, and the residual oil saturation also decreased. With the increase of the polymer concentration, the oil relative permeability of the same water saturation increased, but the residual oil saturation decreased. In the early stage of polymer flooding, the residual oil saturation decreased rapidly, while in the middle and late stages, the residual oil saturation decreased slowly. The research results provided guidance and basis for fine numerical simulation and development planning in offshore polymer flooding fields.

Key words: polymer flooding, relative permeability, experiment, polymer concentration, permeability determination

中图分类号: 

  • TE343