Synthetic Seismic Record Analysis with ColchisFM

Synthetic seismic records are calculated by deriving reflection coefficients from acoustic and density logs, followed by convolving the reflection coefficients with seismic wavelets. The resulting synthetic seismic waveform represents the combined effect of multiple reflection coefficients and wavelets. However, when analyzing thin geological layers, the synthetic waveform often fails to represent clear geological interfaces distinctly.

The Reflection Coefficient Analysis Module in ColchisFM addresses this limitation. It processes continuous acoustic travel-time and density curves within the target interval using a stepwise transformation approach, constructing a corresponding impedance curve. This stepwise processing minimizes the number of reflection coefficients while enhancing the emphasis on changes caused by lithological transitions, as illustrated below:

Using the stepwise-transformed acoustic travel-time and density curves, the module calculates reflection coefficients, which are then multiplied by wavelets to generate the seismic response for each reflection coefficient. According to the convolution model and the principles of synthetic seismic record creation, the summation of these seismic responses results in the synthetic seismic trace.

By comparing discrete synthetic traces with geological profiles obtained from drilling, users can precisely analyze which geological interface — or combination of interfaces — contributes to a particular seismic reflection and quantify the contribution of each interface to the reflection.

This brief introduction highlights the functionality of ColchisFM’s Reflection Coefficient Analysis Module. For a deeper dive into its analytical capabilities, we warmly invite experts to reach out to us for further discussions.

Find out more: http://www.colchispetro.com/ColchisFM.html

Simply write us an email for a ColchisFM free trial: support@colchispetro.com

#rock physics,#synthetic,#geoscience,#ColchisFM,#seismic forward modeling software,#Equation forward modeling,#reservoir geophysics