声场提高原油采收率研究

Research on EOR by sonic wave.OGRT,1998, 5(3):13～16

该文用实验方法研究了声场提高原油采收率的机理。研究表明：声场对解除油层伤害造成的固体堵塞、消除贾敏效应及改善孔隙附面层均有一定作用。由于油层解堵，提高了水驱油波及系数及原油采收率。在所给实验条件下，经声场处理的含油岩心，水驱油采收率可提高６％～１７％。现场应用例子也取得了良好效果。

This paper studies the mechanism of sonic wave enhanced oil recovery. It shows that sonic wavecan remove the solid blocking caused by formation damage, relieve Jamin effect and improve porous boundary layer. Consequently,it can improve waterflood sweep efficiency and enhance oil recovery. Under experimental conditions,the waterflood oil recovery increases by 6% ～ 17% in an oil bearing core after treated by sonic wave. A good result is obtained in field applications.