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              Monodon Ultracube™ 3D Reprocessing

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              The Monodon Ultracube™ 3D Reprocessing consists of ~ 14,700 km2 3D and ~2,000 km 2D reprocessed data in the prospective Northern Carnarvon Basin of the North West Shelf, Western Australia.

              The project incorporates a total of sixteen individual 3D surveys and three 2D surveys.

              The study includes the reprocessing from field tapes using a state-of-the-art flow and cutting edge algorithms that include industry leading linear noise removal and regularisation.

              The reprocessed data has been merged prior to anisotropic (TTI) pre-stack depth migration incorporating multi-iteration tomographic model building.

              Access to such a large and comprehensive data set is typically very difficult and often not possible. Large-scale 3D surveys of this size are invaluable for geological interpretation and basin modelling applications.

              The 3D contributing surveys to the fully merged dataset are Panaeus 1, Panaeus 2 South, Panaeus 2 North, Panaeus 99A, Panaeus 99B, Panaeus 99C, Panaeus 99 East, Panaeus 2000 West, Panaeus 2001 East, Wandoo, Stag, Cash, East Dampier, Demeter, Shelley OBC marine seismic surveys, located in the Carnarvon Basin, North West Shelf, Western Australia.

              The datasets were processed from SEGD field tapes by DownUnder GeoSolutions in Perth.

              For more information about the Monodon Ultracube™ 3D Reprocessing, please contact us directly.

              Contact Us
              Project parameters
              Project Size

              ~17,100 sqkm

              Processing Details

              Zero Phase Designature

              Linear Noise Removal

              Shallow Water Multiple Prediction Demultiple

              Tau-P Deconvolution

              Match Surveys

              Regularisation

              Six rounds of tomographic velocity Model Building

              Anisotropic Pre-stack Kirchhoff Depth Migration

              Depth to Time Conversion

              Frequency Enhancement

              Residual Moveout correction

              Time Varying Filtering

              Residual Scaling

              Key Processing Details

              3D Surface Related Multiple Attenuation (3D SRME)

              Shallow water multiple prediction (SWaMP)

              Five iterations of tomographic velocity updating of velocity model

              Anisotropic Kirchhoff pre-stack depth migration

              Deliverables

              Full Stack (8-35 degree)

              Near Stack (5-15 degree)

              Mid stack (15-25 degree)

              Far Stack (25-35 degree)

              Ultrafar Stack (35-45 degree)

              Migration Gathers

              Interval Velocities

              RMS Velocities

              Bin Centre UKOOA Data

              Processing Report

              Project partners

              DownUnder GeoSolutions

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