QC Calculated Surface Consistent amplitude correction values

Theory

SC Amplitude correction advanced - QC module is helpful in QCíng the calculated amplitude correction values using SC Amplitude correction advanced - Calculate module. This module is very helpful in identifying the weakest amplitude components, strongest amplitude components, any erratic/spiky amplitudes. Amplitude attributes like Average, Mean, Minimum & Maximum are calculated from the Amplitude recovery item.

Input data

Input DataItem

Input trace headers

connect/reference to Output trace headers. These trace headers information is used to display the calculated SC amplitude corrections.

AmplitudeAdvancedRecoveryDataItem

connect/reference to the Amplitude Recovery data item calculated by SC amplitude correction advanced - Calculate module.

Parameters

Attribute to calculate { Average, Median, Minimum, Maximum }

from the amplitude recovery data item, it extracts different types of amplitude attributes.

Average - for a given component (source/receiver/cmp/offset), it represents the mean/average amplitude level which acts as a baseline

Median - all the calculated amplitudes are sorted and the middle value is considered. This way, it avoids any spiky/erratic amplitudes values.

Minimum - this helps in identifying the weakest amplitude components like sources/receivers (geophones). These weak amplitudes are due to dead traces or signal attenuation.

Maximum - this helps in identifying the strongest amplitude components like sources. Higher source energy. This value helps in avoiding increasing of the already higher amplitude components.

Settings

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 data

There is no output data vectors available for this module so the user can ignore it.

Information

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

Examples

In this example workflow, add SC Amplitude correction advanced - QC module to the existing workflow and connect/reference the AmplitudeRecoveryAdvancedDataItem from SC Amplitude correction advanced - Calculate module.

Inside the parameters, choose different attributes to calculate from the drop down menu.

Average

Median

Minimum

Maximum

Launch Vista items. It will displays Sources amplitude correction map & Receivers amplitude correction map.

The user should check amplitude corrections for different components by unchecking the Vista items in the View properties of both Sources and Receiver amplitude correction map.

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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