Page 116 - Well Logging and Formation Evaluation
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106               Well Logging and Formation Evaluation


             0  GR   150  Time  1.95 density  2.95 200 DT 0 4 AI  18  AI FILT
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                        Figure 6.1.2 Example of Synthetic Seismogram




          acter of the synthetic seismograms matches that of the seismic. Depend-
          ing on what kind of normalization has been applied to the seismic traces,
          a similar normalization can be applied to the filtered AI(t) and R(t) traces
          to make them look similar. Note that since the AI(t) trace is now some-
          thing like a sine wave, and the R(t) trace is based on the differential of
          AI(t) (i.e., a cosine wave), the AI(t) trace, if moved up or down by a
          quarter of a wavelength, will look very similar to the R(t) trace.
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