石油学报 ›› 2009, Vol. 30 ›› Issue (6): 894-897.DOI: 10.7623/syxb200906017

• 油田开发 • 上一篇    下一篇

纳微米聚合物驱油室内实验及数值模拟研究

赵玉武1,2, 王国锋2, 朱维耀3   

  1. 1. 中国科学院渗流流体力学研究所, 河北廊坊, 065007;
    2. 中国石油大庆油田有限责任公司第九采油厂, 黑龙江大庆, 163853;
    3. 北京科技大学土木与环境学院, 北京, 100083
  • 收稿日期:2009-03-21 修回日期:2009-06-08 出版日期:2009-11-25 发布日期:2009-05-25
  • 作者简介:赵玉武,男,1970年12月生,1992年毕业于大庆石油学院油气田开发专业,现为大庆油田第九采油厂副总地质师,主要从事油气田开发研究及管理工作.E-mail:zhaoyuwu@petrochina.com.cn
  • 基金资助:

    国家自然科学基金重点项目“低渗透油层提高驱油效率的机理研究”(No.50634020)资助

Laboratory experiment and numerical simulation of nano-micron polymer flooding

ZHAO Yuwu1,2, WANG Guofeng2, ZHU Weiyao3   

  1. 1. Institute of Porous Flow & Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007, China;
    2. No. 9 Oil Recovery Plant, PetroChina Daqing Oilfield Company, Ltd., Daqing 163853, China;
    3. School of Civil and Environment Engineering, Beijing University of Science and Technology, Beijing 100083, China
  • Received:2009-03-21 Revised:2009-06-08 Online:2009-11-25 Published:2009-05-25

摘要:

用模拟污水配制了纳微米聚合物溶液,在未膨胀和预膨胀条件下,进行了室内封堵实验。结果表明,纳微米聚合物可顺利注入储层,膨胀后可以有效地封堵高渗透层,在一定压力下发生突破和运移,可实现逐级封堵。根据纳微米聚合物驱油渗流特点,建立了三维三相三组分纳微米聚合物调驱数学模型。考虑到对流扩散和调驱渗流特性,采用隐压、显饱、隐浓的差分方法求解该数学模型,并编制了相应的数值模拟软件。在大庆龙虎泡油田纳微米聚合物驱油矿场试验区进行了数值模拟研究,优化了注入参数,实施后达到了增油降水和提高采收率的目的,与数值模拟预测指标基本符合。

关键词: 纳微米聚合物, 室内封堵实验, 深部调剖, 逐级封堵, 渗流模型, 数值模拟

Abstract:

The laboratory experiment on formation plugging was carried out by using nano-micron polymer solution confected with modeled sewage under the conditions of no expansion or expansion. The results showed that the nano-micron polymer solution could be injected into reservoirs successfully, and the high-permeability layer could be effectively plugged with the expanded polymer, which could break down and migrate at a certain pressure. So, the progressive plugging could be achieved. According to the seepage features of nano-micron polymer flooding, a 3D-3P(phase)-3C(component) mathematical model of nano-micron polymer for oil displacement was built. Considering convection diffusion and seepage characteristic of deep profile control, the difference method of IMPES and implicit concentration was used to solve the mathematical model. The corresponding numerical simulation software was compiled. The practical application of the nano-micron polymer flooding implemented in the pilot site of Daqing Longhupao Oilfield showed that the injecting parameters was optimized. The oil production rate was raised, while the water production rate decreased and the oil recovery was improved after the implementation of the plan in pilot site. The application result in this oilfield is consistent with the numerical simulation result.

Key words: nano-micron polymer, laboratory plugging experiment, deep profile control, progressive plugging, porous flow model, numerical simulation

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