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电化学采油方法是依据直流电场和电化学助剂在地层孔隙中引起的电化学、电动力学作用而提高采收率的新方法，在低渗油藏及注水后期的中、高渗油藏的开采中具有广阔的应用前景。论述了电化学采油的４种作用机理，即电渗效应、地层细组分的电化学聚结及粘土矿物的变化作用、电解及其产物的作用、润湿性的改善作用。在外电场作用下，油水的电渗效应使油水流动状态得到调整；地层细组分由细变粗，渗透率提高，油流阻力减小；电解碱液和气体进入油层，降低了油水界面张力，阻滞了水流；岩石润湿性受电场及电解产物影响而发生变化。这些过程的综合效应促使含水率下降，油产量增大，采收率提高。参１３（陈志宏摘
Electrochemical oil recovery method is based on the DC electric field and electrochemical additives in the formation of pores caused by electrochemical, electrodynamics and enhanced oil recovery of the new method, in the low permeability reservoirs and water injection late, high permeability reservoir Mining has broad application prospects. The four mechanisms of electro-chemical recovery are discussed, namely, electroosmotic effect, electrochemical coalescence of fine sub-components and the change of clay minerals, the role of electrolysis and its products, and the improvement of wettability. Under the action of the external electric field, the electroosmotic effect of oil and water can adjust the flowing state of oil and water. The fine components of the strata change from coarse to coarse, the permeability increases, and the oil flow resistance decreases. Electrolytic lye and gas enter the oil layer to reduce the oil- Blocking the flow of water; rock wettability by the electric field and the impact of electrolytic products change. The combined effects of these processes result in a decrease in water cut, an increase in oil production and an increase in recovery. Participation 13 (Chen Zhihong pick