数控测井中的声波时差计算

Acoustic slowness-time computation of the digital control logging system.

根据补偿声波的工作原理,在计算声波首波到达时间,利用相似三角形原理,准确计算首波到达时间,并采用自动基线开门和自动门槛幅度的方法提高首波到达时间计算的抗干扰能力,保证了声波时差的测量精度。

According to the working principle of compensation acoustic wave,the similar triangle principle is used to accurately calculate the arrival time of first wave of acoustic wave,the automatic baseline open door and the automatic threshold scope methods are used to enhance the antijamming ability to calculate first wave arrival time,thus guaranteeing slowness-time measuring accuracy of the compensation acoustic wave.