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SEISBASE III Copyright © 1996, Karl Thompson & Associates, Inc.
~ Complex Velocity Modeling Software for Energy Exploration since 1976 ~

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Karl Thompson & Associates, Inc.
www.seisbase.com

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Seisbase III offers the most complete depth conversion and velocity modeling package on the market today. Here's why:

Input Data

Seisbase III can use the following data types:
• Stacking Velocities
• Navigation
• Checkshots
• Well Tops
• Sonics
• Time Interpretations
• Fault Polygons and Planes
• Culture

Interactive Quality Control capabilities include:

• Maps of Interval/RMS/Average velocity at constant times or depths
  • View sample Interval Velocity Map (42 kb)
• In-Line velocity displays along seismic lines with interactive editing
  • View sample In-Line velocity display (43 kb)
• Various crossplot displays with edit capabilities
  • View sample RMS Velocity vs Time display (16 kb)
  • View sample Interval Velocity vs Time display (14 kb)
  • View sample Residual Depth vs Time display (17 kb)
• Compaction curve displays
• Editing and gridding of input horizons and fault planes

Velocity Volumes

Seisbase III allows the user to:
• Build true 3-D velocity volumes for depth conversion or migration
• Incorporate checkshot and well top data in calibrating the velocity volume
• Incorporate fault planes in limiting velocity extrapolation across fault blocks
• Perform true 3-D replacement of anomalous velocity bodies (i.e. salt)
• Use sonics for additional velocity control
• Use velocity volumes for extracting pseudo checkshots using directional surveys

Layercaking

Seisbase III offers a fully interactive layercaking system, including:
• Intelligent interval determination
• A choice of layercaking equations
• Spatially varying layercaking coefficients
• Handling of reverse fault and fault shadow problems
• A full set of analysis tools
• A cross-sectional display for quality control

Horizon Operations

Seisbase III offers a full set of horizon operations, including:
• Time to depth conversion
• Depth to time conversion
• Calibration of depth maps to well tops
• Average velocity map generation
• Interval velocity map generation
• Isochron/Isopach map generation
• Normalized interval velocity map generation

Additional Features

• Hard copy generation (CGM)
• Motif/X-windows user interface
• Online documentation
• Interfaces closely with Landmark and other popular packages
• Phone support
• Timely updates

Versatility

• Projects can range from prospect to regional in size
• System keeps track of all files, user does not have to remember file names
• Editing of all data types allows Seisbase III to serve as a database (e.g. for checkshots)