Time/Depth Velocity Modeling: Cross Plot
The Cross Plot dialog box displays a graph of the data being used in the time/depth calculation for the layer currently selected in the Layers dialog box. Use the Displaymenu to determine the data being displayed. When you are using a Depth selection that doesn't require well input, this dialog box will be blank.
This Cross Plot dialog box works interactively with the Well Data Points, and Velocity Histogram dialog boxes. Selecting data points in any one of these will cause the corresponding data points to become highlighted in all of them, helping you to identify anomalies and trends. With data selected, use the shortcut menu to remove individual data points from the time/depth calculation for a single layer, or for all layers.
The Cross Plot dialog box can be turned off, minimized and moved to help you access the display and analysis tools available in the other dialog boxes.
Selection Toolbar
Display: Select the data you want to display.
- Time vs. Depth: Create
a plot of time and depth for the data points being used in the
time/depth calculation for the layer currently selected in the Layers dialog box.
- Average Velocity vs. Depth:
Create a plot of the average velocity and depth for the data points
being used in the time/depth calculation for the layer currently selected in the Layers dialog box.
- Interval Velocity vs. Thickness: Create a plot of the interval velocity and the thickness between the layer currently selected in the Layers dialog box, and the layer above. This will not be available for the first layer in the model.
- Interval Velocity vs. Mid Depth: Create a plot of the interval velocity and the depth of the mid point between the layer currently selected in the Layers dialog box, and the layer above. This will not be available for the first layer in the model.
Trend Line: Choose a method to calculate the
trend line. Choose from Linear, Quadratic, or Cubic. The equation for the trend line is displayed above the cross plot.
Right click on the Cross Plotdialog box to open the shortcut menu.
Time/Depth Properties: Open the Properties dialog box,
used to define the gridding method and bounds for the
calculations, and select the data to use.
Delete Wells From Layer: Remove selected wells from the time/depth calculations for the layers selected in the Layers dialog box.
Delete Wells From All Layers:
Remove selected wells from the time/depth calculation for all layers.
This will remove the well from the Selected
list on the Select Seismic tab
in the Properties dialog box.
Also See
— MORE INFORMATION
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