直流电提高采收率技术研究

本文初步建立了外电场作用下缝洞介质内单相渗流的数学模型, 推导了有限元方程的数值模型。利用COMSOL Multiphysics软件研究了外电场作用下缝洞介质的渗流机理，给出了外电场作用下缝洞中速度分布，结果表明电场能有效增加缝洞中流体的速度。研究结论为采用直流电场方法提高缝洞介质的采收率提供了一定的理论基础，对于应用外加直流电场方法提高采收率也具有一定的意义。

Researching of the technology of enhancing recovery by direct current

Mathematical models to described one-phase fluid flow in fractured- vuggy media under electric field are established and the finite element equations of numerical models are derived in this dissertation. Mechanism of fluid flow in fractured- vuggy media under electric fields was systematically investigated by COMSOL Multi- physics software. The distributions of velocity in the fracture and vug is studied. The results show that the fluid flow can be effectively increased under electric fields. The conclusions in this paper are the theoretical basis of enhancing oil recovery of fractured-vuggy reservoir by DC electric field methods. And it is also make sense to enhancing oil recovery of fractured-vuggy reservoir by DC electric field methods.