Claritas / Overview / Features / First Break/Mutes

GLOBE Claritas First Break Picking and Mutes

The Claritas sqc application is a general seismic QC and display tool which has a variety of uses, including first-break picking, semblance picking and AVO analysis.

First Break Picking

First Break Picking

In first-break mode, sqc allows picking of one or more events, using a layered automatic picking approch that lets you chose from a range of different algorithms for the initial pick, main pick, refined pick and pick validation sequence. (But you need not be spoiled for choice - the default parameters are usually fine).

As well as the automatic picking functions, sqc then lets you override these picks with manually picked arrival times, and this process is made easier by being able to flatten the traces based on their arrival times. The text file output from sqc contains a list of arrival times ready for input to the refstat or refstat3d applications.

Mutes

Mutes

sqc's usual mode of operation is on pre-stack data, allowing the user to display shots from a SEG-Y Claritas file, move around at will within that file, and choose mute functions, reversed-polarity traces, whole-trace or polygonal trace edits and spikes. The display also features the ability to position traces according to a specified header variable (eg, offset) which is particularly useful for irregular-offset acquisition, such as sonobuoy data or wide-angle refraction spreads.

Claritas also contains processing modules for automatic despike and trace mute based on windowed amplitude considerations.

The areal application can also be used to display windowed amplitudes in a spatial sense - parts of the display can be tagged, and the resulting output is a list of tagged traces which can then be used for selective trace editing.