This module is helpful in fixing any bad values present in the seismic data. These bad values could be generated during the acquisition (due to malfunctioning of the recording instrument or faulty geophone/hydrophone/writing/tape transcription) or while performing any data processing technique like noise attenuation etc. These bad values could be anything like higher amplitudes or NAN (Not A Number). By using this module, it will give an option to replace the bad values with user defined value.
Input DataItem
Input gather - Connect/reference to Input gather. It requires an input gather. It could be either a seismic gather (shot/receiver/bin) or a stack/volume.
Value to paste - mention the value that should be replaced in the place of bad/nan value. By default, 0.
Auto-connection - By default, TRUE(Checked).It will automatically connects to the next module. To avoid auto-connect, the user should uncheck this option.
Number of threads - One less than total no of nodes/threads to execute a job in multi-thread mode. Limit number of threads on main machine.
Skip - By default, FALSE(Unchecked). This option helps to bypass the module from the workflow.
Output DataItem
Output gather - generates output gather after fixing the bad values.
Total fixed values - provides information about total number of fixed values in the input gather
Infinite fixed values - provides number of infinite values fixed.
NAN fixed values - provides number of NAN (Not A Number) fixed values.
In this example flow, we read a synthetic seismic dataset with bad values as NAN. By using Bad values fixing module, we replace/paste a value with the NAN values.
Here, we are displaying a single synthetic seismic gather. Since the data size is small, we are loading the data to RAM.
There are no action items available for this module
YouTube video lesson, click here to open [VIDEO IN PROCESS...]
Yilmaz. O., 1987, Seismic data processing: Society of Exploration Geophysicist
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