Apply a time depth chart that is created when working in a given area by tying logs to seismic. The time depth chart corrects the sonic log automatically created by GeoSyn by adjusting the sonic's time depth points.

Click to display the Time/Depth Quality Control curve and grid dialog boxes where you manually adjust the time depth curve to apply in order to correct the sonic.

Select the well from which to display data in the grid below.

Correct logs by applying the variation between the time depth curve vs. the actual sonic and apply this to the model using one of several methods.

For quality control, select whether to convert the time depth points to depth vs. velocity and display the results in the main window. The resulting chart can be overlaid on the sonic to detect discrepancies between the two.