大孔隙介质和储层岩石固液界面水、油动力学

Sophie Godefroy , Jean-Pierre Korb , Marc Fleury
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引用次数: 3

摘要

报道了用磁场循环法在不同温度下进行的核磁弛豫色散实验。这些实验可以获得多孔介质(如颗粒堆积或储层岩石)固液界面水或油分子动力学的原始信息。这些孔隙表面分子动力学的结果对石油开采具有重要意义。将水的表面扩散系数与用PGSE法测得的孔隙中水的体积自扩散系数进行了比较,后者的数值比表面的数值高出一个数量级以上。
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Dynamics of water and oil at the solid–liquid interface in macroporous media and reservoir rocks

Nuclear magnetic relaxation dispersion experiments at different temperatures, using the magnetic field-cycling method, are reported. These experiments allow the obtaining of original information about water or oil molecular dynamics at solid–liquid interface in porous media, such as grain packing or reservoir rocks. These results on molecular dynamics at the pore surface are of real interest for oil-recovery. The water surface diffusion coefficients are compared to the volume self-diffusion coefficients of water in pores, measured by PGSE method, the latter values being more than an order of magnitude higher than the surface ones.

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