More and more oilfields are using acoustic technology to enhance oil recovery. In order to know the
mechanism of acoustic oil recovery technology, the sound radiator of a new downhole vibration
device is modeled and analyzed. Based on the theoretical background, this paper firstly analyzes
the acoustic mechanism for the oil reservoir and then makes a acoustic response analysis on the
sound radiator model for frequency and time-domain investigation by using professional acoustic
simulation softwareeLMS Virtual.lab Acoustics, finally calculates the acoustic transmission loss in
the downhole oil reservoir. The research reveals that firstly, acoustic waves have influences on the
oil & water fluidity in the oil reservoir, the oil pressure gradient and the interfacial tension of
capillary; secondly, the acoustic radiation power and sound pressure of field point attain a peak on
the natural frequency of the sound radiator; thirdly, with the acoustic impact, the sound pressure of
oil reservoir would fluctuate so as to improve the oil recovery ratio; the last but not the least one is
both the sound pressure of oil reservoir point and the transmission loss of rock have a positive
correlation with the vibration frequency. Therefore, it is of great importance for the research of
vibration frequency and structure optimization of sound radiator