Horizontal well logging while drilling and ranging radar echo signal processing method
2016
The invention discloses a horizontal well logging while drilling and ranging radar echo signal processing method. The method includes the following steps that: 1, moving average filtering is performed on radar echo signals, wherein the radar echo signals include a direct wave signal component and a reflected wave signal component; step 2, Fourier transformation is performed on the signals obtained in the step 1, so that the signals can be transformed to the frequency domain from the time domain; step 3, band-pass filtering is performed on the signals; step 4, inverse Fourier transformation is performed on the signals obtained in the step 3, so that the signals can be transformed to the time domain from the frequency domain; step 5, the reflected wave signal component obtained in the step 4 is amplified; and 6, the peak time difference of the direct wave signal component and the reflection wave signal component in the signals obtained the step 5 is obtained, and the peak time difference can be applied to logging and ranging.
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