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聚合物溶液注入附加阻力对驱油效果的影响
张志英^1,2,姜汉桥¹
(1.中国石油大学石油天然气工程学院，北京102249 ;2.中国石油大学石油工程学院，山东青岛266555)

摘要:

利用试验方法对HPAM溶液在不同渗透率岩心上的注人能力进行研究，基于试验结果建立聚合物驱附加阻力与岩心渗透率的相关关系，并在此基础上建立考虑聚合物注人附加阻力效应的油藏数值模拟模塑。模拟结果表明: 低渗岩心中注入聚合物时稳定注人压力增大,即确实存在附加阻力效应;聚合物注入附加阻力对聚合物驱效果预测有较大影响，考虑聚合物注入附加阻力，聚合物起效时间早、含水率下降幅度咸小、聚合物有效期变长。

关键词: 聚合物驱附加阻力数值模拟提高采收率

DOI：10.3969/j.issn.1673-5005.2010.02.018

分类号:TE 357

基金项目:

Influence of additional resistance during polymer injection on oil displacement effect

ZHANG Zhi-ying^1,2,JIANG Han-qiao¹

(1. Faculty of Petroleum Engineering in China University of Petroleum, Beijing 102249，China ;2. College of Petroleum Engineering in China University of Petroleum，Qingdao 266555, China)

Abstract:

The injection properties of HPAM polymer solution on cores with different permeability were studied by experiments. And a correlation of additional resistance of polymer flow with the core permeability was established based on the experimental results. And a numerical reservoir simulation model of polymer flooding was established considering the influence of additional resistance. The results show that the injection pressure increases when the polymer is injected into low-permea-bility cores，which indicates the existence of additional resistance. The additional resistance has a great influence on performance prediction of polymer flooding. Early response, smaller decease in water cut and longer period of validity are observed when the additional resistance effect is taken into account in the simulation model.

Key words: polymer flooding additional resistance numerical simulation improved oil recovery