Display/get gather from seismic data
Get gather module is used individually or in combination with Seismic loop & Loop module. It allows to group seismic data by gathers and work with it gather by gather or with group of gathers.. It is used to display a single or multiple (consecutive) sequence gathers from the internal seismic data or external seismic data format like SEGY.
GReadWriteGFileItem - connect/reference to the Output SEG-Y data handle of Read seismic traces/Read SEG-Y traces module.
GGatherIndexVectorItem - sorting is helpful in displaying the gathers (CSP/CRP/CDP) quickly. Connect/reference the Output trace headers to Sort headers module to sort the data.
Seq. gather increment - number of gathers to be read per iteration. specify how many sequential(consecutive) gathers to be displayed.
Sequential gather number - define the current sequential gather number.
Skip - By default, FALSE(Unchecked). This option helps to bypass the module from the workflow.
GGatherItem - generates the output gather as an item and also it can be used for connection/references.
Trace headers - generates the output trace headers
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In this example workflow, we are getting a gather using Get gather module. For this, we are using internally saved seismic data set and reading this file by Read seismic traces module. We sorted the data in common shot point order.
When Sequence gather number is Zero (0) by default and the user executes the module then it will throw an error message
To fix this error, change the Sequence gather number to anything but not 0.
In case the user wants to display consecutive gathers, it is possible by specifying the number of sequence gathers at "Sequence gather increment" parameter. Let's get 4 sequence gathers.
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YouTube video lesson, click here to open [VIDEO IN PROCESS...]
Yilmaz. O., 1987, Seismic data processing: Society of Exploration Geophysicist
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