Licence: Creative Commons Attribution-NonCommercial 4.0 International. Please contact us if you would like to use this software commercially.
Depth conversion can take a substantial amount of an analyst’s time, often taking several weeks, or more, and still leave concerns about the accuracy and the ‘what ifs?’ VelocityManager has been designed with these concerns in mind, and offers very substantial improvements in effectiveness. This is achieved through remarkable, new interactive processes based on well proven techniques, developed in conjunction with leading edge mathematical modelling technology. The package is presented in a user friendly and intuitive environment…… “Bringing the power of advanced depth conversion technology to the user of industry standard mapping systems”.
VelocityManager characterises a new generation of computer software for geophysicists which supports interactive modelling techniques, and flexible management of multi data formats. It is designed to suit both the infrequent user, and the specialist alike. The graphical user interface provides the foundation for implementing the interactive velocity modelling concept. VelocityManager uses the OSF/Motif interface style with X-Windows for Solaris platforms, and Win32 for PC users.
VelocityManager supports a variety of analysis and modelling techniques for the prediction of velocity models. These are based on well established ‘layer cake’ approaches, incorporating well data and optional seismic stacking velocities. Support is also offered for modelling data from deviated wells, offering accurate solutions. The modelling features a number of novel approaches for rapid solutions, and most importantly, solutions to the full potential of the data available.
VelocityManager offers the user the ability to integrate all velocity information with a seismic interpretation, and will allow the geophysicist to make judgements interactively on the basis of a fully informed analysis of all data available. Sophisticated features have been developed in order to allow the user to optimise both accuracy and speed of use in velocity modelling and depth conversion.
VM will process and manage data types required for velocity and depth conversion.
• Verification on import • Discreet project databases • Industry standard and custom formats • Stacking velocities • Well data, time and depth • Well survey, for deviated wells • Grid data, interpreted time horizons
VM is designed to manage industry formats in a user friendly manner.
• Stacking velocities in an extensive library of format types in VelmanFDL • Custom formats can be readily added to the format interpretation library • Grid files are seamlessly linked to CPS, Z-MAP, Kingdom, Petrel and EarthVision • Well survey data
Interactive modelling allows rapid building of sophisticated velocity models, designed to offer effective depth prediction by accurate extrapolation in 3-D space. The software takes advantage of recent developments in surface modelling by SurfaSe.
• 3-d layered modelling • Interactive model building • Multiple model comparison • Complete solution to deviated well data • Functions, based on over twelve relationships • Weighting for wells; individually or by area • Real time optimisation of both linear and non linear velocity functions • Optimised regression options include least squares and linear fitting • Extensive range of interactive quality control tools for model characteristics
Stacking (NMO) velocities are ‘keyed’ automatically to the user’s interpreted time horizon grids and output interval velocities between the interpreted horizons.
• Keying to time grid data • Processing of noisy interval velocity fields • Tie velocity fields to well control • Interval velocity QC display
Designed to offer the user sophisticated utilities for the rapid processing of velocity fields developed from seismic stacking velocities.
• Band limit to eliminate implausible values • Spatial Filtering of grids by Fast Fourier transform • Formula processor
Very rapid and novel interactive tools for the visualisation and editing of velocity parameters during the modelling process.
• QuiCplot, very rapid contour display of velocity spatial component • Multi- velocity function • Velocity histogram • Velocity ‘slice’ display
Allows the tying of grids to well control data. Exploiting SurfaSe routines, it delivers a very high performance solution.
• Time grids to well times • Interval velocities from stacking velocities, tied to well interval velocity control points
Very rapid and automated depth conversion of time grids, following the building of velocity models within in VM.
• Wells by function • Stacking velocities • Combined wells and stacking velocities
Results are output in industry formats.
• Host grid files format (Z-MAP, CPS-3, CPS-1, Kingdom, Z-MAP, EarthVision, Petrel, Geographix, and others) • Report Log in ASCII format. • Model parameter summary