人工振动对多孔介质中液体流动的影响

Effect of artificial vibration on liquids flow through porous media

人工振动增产技术是一种新的提高采收率方法。人工振动模拟系统主要由函数/任意波发生器、功率放大器和激振器等组成,该系统与岩心流动实验系统配合,进行了人工振动对多孔介质中单相、两相液体流动的影响,进行了不同振动参数的影响程度研究。研究表明,人工振动可以提高单相液体通过多孔介质的流速,提高幅度与振动参数有关,振动结束后具有一定的滞后效应;人工振动能够提高水驱采收率,并降低含水率,而且人工振动增产效果与振动参数有关,同时介绍了人工振动增产技术的现场应用情况。

Artificial Vibration Oil Production(AVOP) is a new and prospective method for enhanced oil recovery.A new system for artificial vibration simulation was designed,it mainly includes a Function/Arbitrary Waveform Generator,a Power Amplifier, a Vibration Starter.Combined with a core-flooding system, the effect of artificial vibration on one-phase and two-phase fluids flow in porous media was studied.Different vibrating parameters were used to study their effects on liquid flow. Experiments show that the stimulation of artificial vibration can improve the flow rate of oil through porous cores and the increase rate is related to the vibrating parameters.After artificial vibration treatment,the hysteresis effect is found.Artificial vibration treatment can increase oil recovery,decrease the water cut at the same time.The results of oil recovery increment is related to the vibrating parameters.The field tests of artificial vibration oil production were also introduced.