论文部分内容阅读
将界面化学理论和渗流物理理论相结合，在毛细管模型与单分子层作用模型的基础上，推导出了固液界面分子力作用与多孔介质的渗透率或孔隙半径的近似关系式，并设计和进行了岩心流动对比实验。结果表明：在低渗透多孔介质中，液体渗流为非达西类型，渗流曲线特征为凹形曲线至直线，存在（拟）启动压力梯度；非达西特征取决于多孔介质的渗透率和流体性质；固液界面分子力作用随多孔介质的渗透率或孔隙半径增大而单调递减。在低渗透多孔介质中，固液界面分子力对液体渗流的影响较大，且为渗流具有非达西特征的主要原因；而在较高渗透率多孔介质中，它对渗流的影响可以忽略，液体渗流为达西类型。综述了非达西渗流应用研究现状。图２表１参１１（陈志宏摘）
Based on the theory of interface chemistry and seepage physics, based on the model of capillary tube and monolayer, the approximate relationship between the molecular force of solid-liquid interface and the permeability or pore radius of porous media is deduced. A core flow experiment was carried out. The results show that the fluid seepage is non-Darcy type in low permeability porous media, and the curve of seepage is concave curve to straight line with (quasi) start pressure gradient. Non-Darcy characteristics depend on the permeability and fluid properties of porous media The molecular force at solid-liquid interface decreases monotonously with the increase of permeability or pore radius of porous media. In porous media with low permeability, the molecular force at solid-liquid interface greatly affects liquid seepage, and is the main reason for non-Darcy characteristics of seepage. However, in porous media with higher permeability, the influence of molecular force on seepage can be neglected, Fluid seepage is Darcy type. The current research status of non-Darcy flow applications is reviewed. Figure 2 Table 1 参 参 11 (陈志宏 摘)