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Description

3D CO-MF search engine

 

This procedure execute the calculation of 3D common offset MultiFocusing (CO MF). The calculation can be performed standalone using CPU /GPU or remotely on cluster using CPU/GPU nodes.

The input to regularization procedure must be binned data, thus additional binning after data regularization must not be applied as it may create a problem with data enhancement procedure.

Input data – seismic data and parametrization tables.

Output data – Database file with calculated optimal MF parameters and corresponding to them time-corrected events.

Input data

SEG-Y data handle

Input trace headers (of seismic data)

Input bin grid

Trace headers for MF

MF Tables Parametrization

 Link to Fresnel Zone factor table, used for calculation of data consists of few acquisitions with different        parameters (nominal fold coverage). Calculation with this table will perform unique MF nominal fold by        using spatially varying Fresnel Zone percentage

GMFPickingItem

 Link to velocity constrain picking that can be taken from another procedure

V0 Map

Parameters

File with picking

 File consists the velocity corridor. The search of the optimal MF parameters will be performed only        inside this constrain. If not specified the search will be performed for all velocities

CO Aperture

 The parameter that is responsible for selection of data for calculation

CO aperture mode

 

3D

Storage file 3D

Output Acquisition

 Output geometry for CO MF

Output bin grid

Storage Velocity analize

Each inLine

Each xLine

Calculation area

 Parameters of calculation area

First inline number(-1 no limit)

 First inline to be calculated

Default: -1

Last inline number(-1 no limit)

 Last inline to be calculated

Default: -1

First crossline number(-1 no limit)

 First xline to be calculated

Default: -1

Last crossline number(-1 no limit)

 Last xline to be calculated

Default: -1

Selection type

Min offset calculation

Merge distance for min offset calculation

Desired min distance

Calculation rule

 How calculation will be performed in case calculation steps bigger than 1. Logical AND – calculation        performed along inlines and crosslines with determined steps. Logical OR – calculation performed in        interception points with determined steps.

 Default: logical AND

Step along inLine number

 Step between calculated inlines

Default: 1

Step along xLine number

 Step between calculated xlines

Default: 1

First Time

 Start calculation time

Default: 0

Last Time

 End calculation time

Default: 6000

Recalculate selected bins

Advanced

Ignore header comparing