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对模型井中收发探头在同一井眼和收发探头在不同井眼情况下产生的声场进行了理论和实验研究。理论结果表明，滑行纵波、滑行横波与纵、横波体波行为不同；源距变化对声波测井探测深度无大影响，探测深度主要受声源频率特性及其在地层中激发的波型模式的影响。实验用的模型井是由水泥、砂和水混合浇铸而成，井液为变压器油。不同源距（７种）、不同声源主频（３种）、不同井径（２种）条件下的实验结果与理论计算结果一致，即圆柱状井眼模型中激发的声波的大部分能量在井壁附近的１倍波长范围内，声波测井的探测深度可定义为１倍波长，探测深度与源距无关，而与声源主频有关，但并非单调关系。
The theoretical and experimental research on the sound field generated by the receiving and sending probes in the same well and the receiving and sending probes in different boreholes has been carried out. The theoretical results show that the behavior of longitudinal waves and longitudinal waves is different from that of longitudinal waves and transverse waves. The variation of source distance has no significant effect on the acoustic logging depth. The depth of detection is mainly affected by the frequency characteristics of the sound source and the wave pattern excited in the formation influences. Experimental model wells are made of cement, sand and water mixed casting, well fluid transformer oil. The experimental results under different source distances (7 kinds), different sound source frequency (3 kinds) and different well diameters (2 kinds) are consistent with the theoretical results, that is, most of the energy of the excited acoustic wave in the cylindrical wellbore model In the 1 × wavelength range near the borehole wall, the sounding depth can be defined as 1 × wavelength. The detection depth has nothing to do with the source distance but with the sound source frequency, but it is not monotonic.