单相液体在多孔介质中的电动渗流特性

Characteristics of electrodynamic seepage flow of one-phase fluid in porous media

研究了直流电场作用下的电动渗流特性 ,建立的数学模型与实验结果表明 :电动渗流速度与电场强度、地层孔隙结构及地层流体性质有关 ,电动渗流速度随着电场强度的增加而单调增加 ,注入水的矿化度越高 ,其电动渗流效应越明显 .在实验系统中 ,当注入端为负极 ,产出端为正极时 ,在直流电场作用下 。

In this paper, the characteristics of electrodynamic seepage flow have been studied by the experiments under DC electric field. Both the mathematical model established in this paper and the experimental evidences reveal that the velocity of electrodynamic seepage flow is related to the electric field intensity, pore structure of the formation and the behavior of the formation fluid. The electrodynamic seepage flow velocity increases with the electric field intensity increase, and the effect is obvious with the injection water salinity increase. In the experimental system, the injectability can improve greatly under the impressed DC electric field when injection end is cathode and production end is anode.