国产单发双收声速测井仪是靠两道幅度鉴别级来触发记录门,以记录声波时差。鉴别门坎的高低,直接影响着触发相位。当两道触发相位不同时,就会出现误差。事实上,由于门坎调整中的人为因素,以及由于地层介质的不同而引起声波信号衰减程度的变化,使得两道触发相位不可能较好地配合。 Domestic single double-speed sound logging tool is based on two amplitude discrimination level to trigger the record gate to record the sound wave time difference. Identify the level of the threshold, a direct impact on the trigger phase. When the two trigger phase is different, there will be errors. In fact, due to the human factors in the threshold adjustment, as well as the variation of acoustic signal attenuation caused by the formation medium, it is impossible for the two triggering phases to cooperate well.