Prestack Migration

g-Platform processing suite is capable of performing isotropic and anisotropic migrations in much faster and efficient manner. The user can submit the migration jobs in a cluster (for large projects) and also execute in a stand alone mode like a small notebook/PC (for few lkms of line length). g-Platform migration algorithm runs on both CPU and GPU clusters.  

Prior to the migration, the data should be regularized. Any gaps in the data can create migration artifacts.  For regularization, user can use any one of the regularization methods available under Regularization section of g-Platform module list. Also the input velocity model to perform the migration should be smooth.

Before running the migration, we need to create Velocity PreSTM engine wherein we generate the velocity storage file with the user defined velocity ranges. The objective of this step is to use this velocity storage file to scan through the correct velocities going into the migration.

•Velocity selector - Kirchhoff PreSTM Engine

•PSTM Imaging selector 2D - Velocity/angle/offset.

•Kirchhoff PreSTM file in/out - migration

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The output (storage file) from the Velocity selector - Kirchhoff PreSTM Engine will be the input for PSTM Imaging Selector 2D - Velocity/angle/offset module.