西南石油大学学报(自然科学版)

• 油气化学工程 • 上一篇    下一篇

纳微米聚合物颗粒分散体系微孔滤膜流动特征

龙运前1 *,朱维耀2,刘启鹏3,宋付权1   

  1. 1. 浙江海洋学院创新应用研究院,浙江舟山316022
    2. 北京科技大学土木与环境工程学院,北京海淀100083
    3. 国土资源部油气资源战略研究中心,北京西城100034
  • 出版日期:2015-12-01 发布日期:2015-12-01
  • 通讯作者: 龙运前,E-mail:longyunqian@163.com
  • 基金资助:

    国家自然基金重点项目(50934003);国家重点基础研究发展计划(2013CB228002);国家自然科学基金(11372033)。

Flow Characteristics of Nano/Micron-Sized Polymer Particles Aqueous#br# Solution Through Microporous Membrane

Long Yunqian1*, Zhu Weiyao2, Liu Qipeng3, Song Fuquan1   

  1. 1. Innovation Application Institute,Zhejiang Ocean University,Zhoushan,Zhejiang 316022,China
    2. School of Civil & Environmental Engineering,University of Science and Technology Beijing,Haidian,Beijing 100083,China
    3. Strategic Research Center of Oil and Gas Resources,Ministry of Land and Resources,Xicheng,Beijing 100034,China
  • Online:2015-12-01 Published:2015-12-01

摘要:

为了评价纳微米聚合物颗粒分散体系在低渗透油藏中的流动特征,利用微孔滤膜模拟低渗透油藏的喉道,采
用激光粒度仪和微孔滤膜过滤装置,对其流动特征及其影响因素进行了研究。结果表明:水化时间小于120 h 时,聚
合物颗粒的封堵作用较强;水化时间大于120 h 后,聚合物颗粒逐级调驱能力增强;随着压力差增大,聚合物颗粒储层
深处逐级调驱的效果增强,压力差大于0.15 MPa 后,逐级调驱效果增加的速度明显加快;随着滤膜孔径减小,聚合物
颗粒过滤速度急剧降低,在0.45,0.80µm 微孔滤膜上粒径为1.68µm 聚合物颗粒具有很强的封堵能力,而在3.0 µm 微
孔滤膜上具有较强的储层深部逐级调驱效果;随着聚合物颗粒浓度增加,储层深部逐级调驱效果变弱,颗粒浓度增至
2.0 g/L 后,聚合物颗粒已经没有深部逐级调驱的效果。

关键词: 纳微米聚合物颗粒, 微孔滤膜, 流动特征, 封堵, 逐级调驱

Abstract:

To evaluate percolation ability of aqueous dispersion system of nano/micron-sized polymer particles in low permeability
reservoir,the flow characteristic and its influence factors are studied by laser particle size analyzer and filtration
device of microporous membranes which are simulated as pore throat of low permeability reservoir. The results show that the
nano/micron-sized polymer particles have stronger plugging effect in hydration time of less than 120 h. After hydration time
of more than 120 h,deep profile control effect of nano/micron-sized polymer particles gradually increases. With increasing
pressure difference,nano/micron-sized polymer particles have stronger deep profile control effect which increases faster after
larger than pressure differentials of 0.15 MPa. When pore sizes of microporous membrane decrease,the filtration rate of polymer
particles decreases rapidly. Therefore polymer particles with particle size of 1.68µm have stronger plugging effect in the
0.45,0.80µm microporous membrane,but they have stronger deep profile control effect in 3.0μ m microporous membrane.
The deep profile control effect of nano/ micron-sized polymer particles decreases with increasing particle concentration. After
particles concentration increases to 2.0 g/L,the polymer particles already have no deep profile control effect.

Key words: nano/micron-sized polymer particles, microporous membrane, flow characteristic, plugging, deep profile control

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