![]() Run the inversion on the volume over a limited time window around the zone of interest to QC the results, then run the entire volume. Note that the advanced parameters are filled in with the corresponding values from the analysis menu. Select Pre-stack Inversion from the Process menu and fill in the parameters as needed. Pre-stack Inversion When the Pre-Stack Inversion Analysis is completed, run the inversion on the entire volume. You can see the response in the inversion analysis. Pre-stack Inversion The resulting Analysis display appears, and we can see there is a sharp drop in the Vp/Vs ratio. Be sure all the settings are correct and click OK then click Apply. The well cross plot menu allows the user to control the log relationships that will be included in the inversion. Pre-stack Inversion The analysis window will appear as shown. Select Pre-Stack Inversion Analysis from the Process menu above, then fill in the analysis parameters on the right as shown. This tool is used to test inversion parameters before running the process. Pre-stack Inversion After the model is built, turn off the trace data (this option can be found under the eyeball icon) to see the P-Impedance model.īefore inverting the entire volume use the Pre-Stack Inversion Analysis tool. Choose, Build Pre-Stack Model, fill in the needed parameters, and Click OK 8 The Model building tool is found under, Strata Model, in the Processes Tab. Once the correct data is available, start the model building process. The logs should be correlated and wavelets should have been carefully selected before starting the inversion process. The seismic should be in the angle domain with as much noise removed as possible and the event of interest flattened. Pre-stack Inversion The Angle Gather should appear as shown It is important to note that the pre-stack inversion process requires properly conditioned angle gathers and well logs. To create angle gathers, select Angle Gather from the Gather portion of the Processes menu.Įdit the needed parameters shown in the image to the right and click Specify Velocity… Note we are creating an angle range from 0 to 45 degrees. Pre-stack Inversion The Pre-stack inversion process runs on angle gathers. Opening a Project Once HRS9 launches, select an existing project or create a new one.
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