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近几年来,井眼声波激发(AWS)已经被广泛接受。该技术是在井眼附近用强度达10kWm~(-2)的波激发而形成声波场。井眼附近岩层中的声波能量密度大约10~(-1)Jm~(-3)(10~(-7)Jcm~(-3))。操作频率范围约20～30kHz,所以,这种方法是典型的超声波的例子。与作压裂酸化比较,AWS更廉价,更有价值,且不污染环境。人们认为AWS用于水平井是无可非议的,更为重要的一点是没有一种更为符合实际的方法能够代替AWS而对井附近不造成损害。
In recent years, wellbore acoustic wave excitation (AWS) has been widely accepted. The technology is in the vicinity of the hole with the intensity of 10kWm ~ (-2) of the wave excitation and the formation of acoustic wave field. The acoustic energy density in the rock formation near the borehole is about 10 ~ (-1) Jm ~ (-3) (10 ~ (-7) Jcm ~ (-3)). Operating frequency range of about 20 ~ 30kHz, so this method is a typical example of ultrasound. Compared with fracturing and acidizing, AWS is cheaper, more valuable and does not pollute the environment. It is arguable that AWS is used for horizontal wells and, more importantly, there is no more realistic way to replace AWS without causing damage near the well.