4 Application of Wavelet Transform to Analysis of Noise Elimination on Porosity Profile

Wavelet transform method was used in view of that there exist noise originated from non-geological factors on porosity profiles. This method, which takes 1-D wavelet noise elimination and wavelet packet noise e-limination as its principle elements, can reduce the part value of noise signal φs. Processing results indicated that porosity profiles had less noise after wavelet transform and could be more effectively used in comprehensive interpretation when combining with other logs.