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Depth conversion and velocity modeling can be a time- and labor-intensive process that often leaves nagging questions about accuracy and the ever-present "what ifs?" Unless, of course, you have the right software. Developed in partnership with Equipoise Software, Ltd., TKS - VelPAK is designed for all levels of depth conversion— from simple to the most complex. The result is an incredibly accurate model that speaks volumes—faster and easier than ever before.
The VelPAK software package allows geoscientists to construct velocity models to predict depth from seismic time. Its user-friendly, intuitive design makes any degree of detail possible, from simple depth conversions through complex multilayer velocity volumes using acoustic logs, processing velocities and mapping using geo-statistics. And the best part is you don’t have to be a software expert to reap the benefits.
Predefined workflows can be used to run a number of standard and expert depth conversion techniques successfully, with minimal learning curve. These depth conversions use either classic formulae or user-defined methods.
Time-depth conversion can be achieved through the creation of a 3D velocity model of average or interval velocities. In the simplest case, VelPAK provides a quick-look depth conversion requiring very little user interaction.
VelPAK provides two work modes; surface depth conversion mode for regional modeling and profile mode for single 2d lines, arbitrary lines, in-line or cross-lines using a sealed earth model. The profile mode is ideal for salt diapirs, over-thrusts and complex geology including lenses and reefs.
VelPAK also features full support for model building using geological surfaces, formation tops, well acoustic logs, check shot data, seismic processing velocities and geo-statistics. Intelligent layer definition enables surface assignments from many formation tops.
Comprehensive graphing techniques are available for scatter data, curves, surfaces and stack data in virtually any combination as well as interactive editing, robust fitting and custom graphs.
Benefits
- Improved workflow and productivity
- Simplified analysis and expert knowledge encapsulation
- Definitive audit trail and easy sharing of expertise
- Highly customizable advanced user interface is perfect for multi-screen environments
Key Features
- VelPAK is part of SMT’s integrated KINGDOM® family of products
- Surface or Profile Depth Conversion
- Grid-to-Grid depth conversions using KINGDOM-generated grids or grids
generated within VelPAK
- Full range of error correction methods including parameter gridding and geostatistics
Graphing and Optimization
- A comprehensive set of graphing techniques for scatter data, curves,
surfaces and stack data in virtually any combination. Interactive editing,
robust fitting and custom graphs provide analysis of curve fit parameters to
give global solutions
- Analyze any time-depth information from logs and derive functions producing
stable results for deeper prospects.
- Derivation of parameters for VZ=V0+KZ and many others. Optimize one parameter and
contour the other.
Processing velocities
- Interval velocities can be extracted and smoothed
- Stack data can be used as a trend surface for mapping and creating
pseudo wells to calibrate with log data
Volumes
- VelPAK can produce a velocity volume and write it to SEGY or TDQ formats.
VelPAK supports average, interval and instantaneous velocities in the time or
depth domain
Sample Workflows Available:
- Interval Velocity v Depth to Middle of Layer: a popular, simple graphing
method to derive V0K.
- Interval Velocity v Isochron: defines the relationship between Interval
Velocity and Isochron for the specified layer. A typical application would
be where a salt layer interval velocity increases as the salt thins.
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