Display seismic gather from raw SEG-Y file

Theory

Quality check of the input raw field data is very crucial. Before proceeding to any further processing steps, one should check the raw gathers. Read Gather from SEG-Y modules helps in achieving this. It works fast because it works with both Read SEG-Y traces and Open SEGY modules and doesn't require Sorting of the traces. Since the data is not sorted, it works with limitations like the user can specify few number of channels etc.

Input data

SEG-Y data handle

connect/reference to the Input SEG-Y data handle of Read SEG-Y traces module.

Parameters

Traces per iteration - number of traces to read in one iteration. By default, 1 which means it will read/consider 1 trace only. Specify more number of traces per iteration to display more traces in the Output gather.

Start trace for read - number of the first trace in the bulk of traces that will be read. By default, 1 which means it will starting from trace sequence 1. If the user specifies trace 60 then it will start from trace sequence 60 onwards.

Load raw headers - loads raw trace headers if it is TRUE (Checked). By default, FALSE (Unchecked)

Settings

Skip

By default, FALSE(Unchecked). This option helps to bypass the module from the workflow.

Output data

Output gather

generates the Output gather vector which can be used as a reference/connection to any other module.

Trace headers

generates the output trace headers that are used as a connection/reference

Raw trace vector

generates the raw trace vector information

Information

There is no information available for this module so the user can ignore it.

Examples

In this example workflow, we display one raw gather with defined no of traces and start trace number.

Set the Parameters as shown below and Launch Vista items.

In the above parameters, we are displaying 40 traces starting from trace sequence 1.

In this below example, we are reading 80 traces with trace sequence starting from 28.

Actions

There are no action items available for this module so the user can ignore it.

Video lesson

YouTube video lesson, click here to open [VIDEO IN PROCESS...]

Related articles

Yilmaz. O., 1987, Seismic data processing: Society of Exploration Geophysicist

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