Quantifying the Transport of Superparamagnetic Nanoparticles in Porous Media Using an Acrylic Flow Cell and Integrated Magnetic Susceptibility Sensor Technique
Quantifying the Transport of Superparamagnetic Nanoparticles in Porous Media Using an Acrylic Flow Cell and Integrated Magnetic Susceptibility Sensor Technique
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DOI：
10.1007/s11242-014-0420-6
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发表时间：
2015-02
影响因子：
2.7
通讯作者：
Shahjahan Khan;D. Potter;E. Kuru
中科院分区：
文献类型：
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作者：
Shahjahan Khan;D. Potter;E. Kuru
纳米颗粒技术正开始被世界各地的石油行业的几个组织探索，磁性纳米颗粒注入的潜在应用范围从监测水力压裂作业的进展到提高石油采收率。然而，目前关于分散的磁性纳米颗粒通过存储材料传输的最佳条件的出版信息很少。磁性纳米颗粒有聚集在一起的趋势，可能会堵塞孔道连接并降低储集层质量。我们报告了初步实验的结果，这些实验旨在确定通过模拟的松散核心材料传输超顺磁性纳米颗粒悬浮液的理想条件。我们使用非金属流动池和集成磁化率传感器技术来量化纳米颗粒悬浮液的传输。流动池是由丙烯酸材料制成的，在流动实验进行时，允许同时在池的不同位置进行磁化率监测。这种在流体流动实验期间对纳米颗粒悬浮液的磁化率进行“在线”定量监测代表着表征技术向前迈出了重要的一步。使用传统的不锈钢流动池不可能同时进行磁化率监测。新的流动池也是透明的，可以直观地观察纳米颗粒悬浮的进展。我们描述了不同的分散剂、超声波、注入速率、多孔介质的渗透性和纳米颗粒类型对纳米颗粒悬浮液传输的影响。流动池和磁性监测系统还有其他几个潜在的应用，包括在各种流体流动实验期间同时监测细小颗粒沿岩心塞长度的迁移。
Nanoparticle technology is starting to be explored by several groups worldwide in the petroleum industry, with potential applications of magnetic nanoparticle injection ranging from monitoring the progress of hydraulic fracturing jobs to enhancing oil recovery. However, there is currently a little published information regarding the optimum conditions for the transport of dispersed magnetic nanoparticles through reservoir material. Magnetic nanoparticles have a tendency to aggregate together, potentially blocking pore connections and degrading reservoir quality. We report results of initial experiments designed to determine the ideal conditions to transport superparamagnetic nanoparticle suspensions through simulated unconsolidated core material. We used a non-metallic flow cell and integrated magnetic susceptibility sensor technique to quantify the transport of the nanoparticle suspensions. The flow cell was made of an acrylic material and allowed simultaneous magnetic susceptibility monitoring at various positions along the cell whilst the flow experiments were taking place. Such “in-line” quantitative magnetic susceptibility monitoring of the nanoparticle suspensions during a fluid flow experiment represents a significant step forward in characterization techniques. Simultaneous magnetic susceptibility monitoring is not possible using traditional stainless steel flow cells. The new flow cell is also transparent, allowing visual observation of the progress of the nanoparticle suspensions. We describe the effect of different dispersants, sonications, injection rates, permeability of the porous media and nanoparticle types on the transport of the nanoparticle suspensions. The flow cell and magnetic monitoring system have several other potential applications, including simultaneous monitoring of fines migration along the length of a core plug during various fluid flow experiments.