压力波动条件下微粒运移规律的实验研究

利用准三维真实岩心微观模型和自行研制的宽频带电伺服波动压力发生系统,通过微观模型可见技术研究了固相颗粒在波动压力作用下侵入地层孔喉的各种过程。通过观测不同振动频率和振幅下,不同浓度及粒径的颗粒悬浮体系在储层孔隙中的运移情况,分析了在波动压力作用下颗粒运移的规律,特别是在一定的波动频率下,实验中可清楚观察到“空化效应”,这种“空化效应”能非常有效地起到解堵与除垢作用。

Experimental Study on Particle Motion Law under the Condition of Pressure Wave

core microscopic model and wideband electrical servo wave (?)motion pressure generating system which developed by ourselves, all courses about wave motion pressure forcing solid particles intrude into stratum hole are researched by microscopic model visible technique. Under different vibration frequency and amplitude, observing the motion of the suspension system in the holes of reservoir bed, which consisted by particles of different density and diameter, the regularity of particles motion under the wave motion pressure is analyzed. Particularly, under certain wave motion frequency, "cavity Effect" can be observed clearly in the experiments, which play a very important role in disposing block and removing scale.