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A Total Modelling Application

Encom ModelVision Pro 10 provides a
solution for every 3D potential field problem.
Whether you work in mineral exploration,
diamond exploration, petroleum exploration,
environmental geophysics, engineering,
unexploded ordnance or underground
hazard assessment, ModelVision Pro can
provide you with a complete interpretation
environment. Designed by geophysical
interpreters for geophysical interpreters,
ModelVision Pro is the most advanced
general purpose model-based interpretation
system available.
Leading Edge Technology Encom's research team is continually responding to industry chalenges to provide new features and integration with other industry software products. You will benefit from over 25 years of continuous improvement.

More than Modelling

ModelVision Pro provides you with a
wide range of import and export formats,
utilities for gridding, filtering and numerical
manipulation. There are tools for survey
simulation so that you can plan and
predict the field specifications for gravity
and magnetic surveys. You can create an
airborne survey from a digital terrain grid
or create a set of synthetic dril holes in a
simulated geological model.

Solutions
-Mineral Exploration
The magnetic and gravity methods are used widely in exploration for base metals, gold and other precious metals, diamonds and mineral sands.
-Base Metal Exploration
ModelVision Pro is used by mineral exploration companies in most parts of the world because it has the ability to model complex geological shapes in three dimensions with a minimum of effort. The combined use of gravity and magnetic methods makes it possible to deduce many geological factors about a potential deposit prior to drilling.
-Diamond Exploration
ModelVision Pro is used by diamond explorers to model magnetic targets believed to be associated with kimberlite pipes.
Gravity data is often used with the magnetic method and simultaneous modelling of gravity and magnetic data helps geologists design optimised drilling programs.
-Hazard Assessment
Intrusions within coal mines cause major disruption to coal production and degrade coal quality. Early detection through the use of magnetic data can save millions of dollars in lost production.
ModelVision Pro is used to assess intrusive dykes, sills, plugs and diatremes. It is also used in the interpretation of landfill, buried drums and UXO investigations.
-Groundwater
Gravity is used to map the location of buried channels and the magnetic method can detect the depth of cover where the channels are sitting on a magnetic basement. Use both gravity and magnetic modelling with inversion to build a 3D model of buried river channels, deep leads and groundwater basins.
Note: The 3D examples below illustrate ModelVision Pro interpretations in Encom PA (formerly known as Profile Analyst).

Petroleum Exploration
ModelVision Pro is used to analyse depth to crystalline basement of salt diapirs, seismic controlled layered sequences and micromagnetic features caused by magnetic hydrocarbon indicators.
-Depth to Crystalline Basement
Gravity and magnetic surveys are used to help understand under-explored petroleum basins. Even in mature basins, magnetic data is being used to re-evaluate basement structural controls that may have influenced the evolution of the sedimentary section.
-Seismic Horizon Integration
You can use depth-converted images of seismic data as backdrops in your section to constrain your interpretation or import seismic horizon data as horizon grids or horizon sections.
Full section modelling using the polygroup body makes it easy to perform joint modelling of the magnetic and gravity data.

Survey Planning & Research
ModelVision Pro models gravity and magnetic data for any 3D model at any x,y,z spatial location including the ground surface, airborne surveys and drillholes. ModelVision Pro is renowned for its ability to interpret 3D potential field data and you can use it to simulate a survey for a wide range of geological models and a wide range of survey types. Instrument types include total field, fluxgate, gradiometers, full tensor magnetometers, gravity, gravity gradiometers and full tensor gravity gradiometers.
ModelVision Pro has a synthetic line and drillhole calculator that creates pre-determined sample locations for modelling. In the case of an airborne survey use a terrain model to derive the local elevation along the line and offset it vertically to create the necessary terrain clearance. You can apply a damping filter to the clearance to simulate the characteristics of the aircraft.

Around the world, geoscience organisations use ModelVision Pro to research issues from processing through to the detectability of subtle buried targets. It is used in research and teaching for introductory training in geophysics through to the solution of advanced research problems. When combined with the synthetic survey capability almost any geoscience interpretation problem can be simulated.
Airborne contractors and QC personnel use ModelVision Pro to analyse daily results and simulate the expected responses from detailed surveys with 50m line spacing to regional surveys with 1km line spacing. ModelVision Pro is packed with features designed to solve the great diversity of geological problems that are suited to magnetic and gravity investigations.

Features

-2D/3D Modelling

ModelVision Pro performs all modelling in 3D but provides the operational efficiency of 2D modelling by providing optimised cross-sections.
Build complex 3D geological models from hand drawn polygons or imported ESRI and MapInfo GIS vector files using the 3D Model Generator and Extrusion Wizard plug-in.
Use this tool to convert 2D map polygonal interpretations into a meaningful 3D model with associated properties of elevation, volume, density and susceptibility.
-Guided 3D Inversion
ModelVision Pro user-guided inversion supports your geological modelling by allowing you to select individual parameters for refinement.
ModelVision Pro supports single profile inversion for isolated cross-sections and full 3D inversion of multiple lines of data. With modern GPS surveying you can invert on data collected along multiple lines with computations made at the elevations of the sample locations.

Active Point mode allows you to select a subset region in a map or cross-section. You can model part of a large survey without having to model every property, vertex position, dip, strike, remanence vector etc.
ModelVision Pro has the ability to perform inversion on in-line filter data, allowing access to the first vertical derivative, or in the case of noisy data, an upward continuation filter.
The Quick Inversion utility can model and invert single anomalies in cross-section view for tabular bodies in a few simple steps saving time on production and precision depth interpretation projects.

Gravity & Magnetic Gradiometer Simulation
ModelVision Pro models the full gravity tensor so you can model data collected by the BHP Billiton FalconTM or Bell Geospace airborne gravity gradiometer systems.
You can simulate total field magnetic gradiometer surveys for the next generation of SQUID magnetometers that measure the full magnetic field tensor.
You can analyse the model components, the vertical gradient or full tensor. The 3D visualisation assists with understanding the relationship between the model and the tensor direction. The 3D colour modulated ribbon allows you to colour code the ribbon by another channel such as terrain clearance.

Optional Features

-Mapping & Imaging
ModelVision Pro supports a variety of mapping methods and allows you to superimpose the plan view of your model in the map view.

-Processing & Utilities
ModelVision Pro is packed with useful utilities such as minimum curvature gridding, grid filtering, line filtering and a calculator that operates on lines, points, drill holes and grids.
The utilities include a survey simulator and a drillhole simulator that can be tagged to a topographic surface and viewed in 3D.
ModelVision Pro is integrated with other products and extensions designed to optimise the benefits derived from advanced interpretation of magnetic and gravity data.

-Encom AutoMag
AutoMag is an advanced implementation of Dr Zhiqun Shi’s Naudy method for automatic location and inversion of magnetic anomalies. It is integrated with ModelVision Pro to provide confirmation of automated solutions in a way that cannot be achieved by conventional automated methods.
Any solution from AutoMag can be converted to a ModelVision Pro model body and the forward model response compared with the original data.
A suite of QC tools allow you to prioritise the responses, apply strike corrections and use inversion to refine the initial models. The tools are used to obtain rapid estimation of depth of cover for petroleum, mineral and groundwater applications.

-UBC-GIF Voxel Models
The UBC-GIF extension for ModelVision Pro makes it easy to prepare and run UBC-GIF, GRAV3D and MAG3D smooth inversions.
Use ModelVision Pro to generate the initial model for the inversion along with the associated data and constraint files. The solid models are converted to mesh models by assigning properties to each mesh cell that falls inside a body. The density and susceptibility of that body are assigned to each cell.
You can use the standad UBC tools to visualise the results of the smooth inversion integrate the inversion results with other models and data sets in Encom PA.
ModelVision Pro allows you to insert geological controls into the UBC-GIF smooth inversion. ModelVision Pro creates and populates the entire model with physical properties.

Import

ModelVision Pro supports a wide range of industry standard line, point, grid and image data formats.

-Lines
General ASCII import wizard
ASEG-GDF2
Geosoft Oasis montaj (.GDB)
Geosoft multi-line (.XYZ)
Geosoft single line (.DAT)
Oasis multi-line (.XYZ)
Simple XYZ format (.LIN)
Mutli-file single line (.DAT)
Separate header and data (.HDR + .LIN)
ER Mapper 4,5 (.ASC) (.TXT)
AMIRA (.TEM)
TOOLKIT (.TK)
External Data Link (User defined)

-Grids
ER Mapper (.ERS)
Geosoft uncompressed (.GRD)
ASEG-GXF
USGS (.USG)
Geopak (.GRD)
Encom (.GRD)
-Drillholes
Geosoft Oasis montajTM (.GDB)
Simple XYZ (.LIN)

-Points
Oasis montaj (.GDB)
Simple XYZ (.PTS)
Geosoft single Line (.DAT)
ER Mapper 4 ASCII Profile (>ASC)
Toolkit format (.TK)
AutoMag solutions

-Images
Images can be imported as Microsoft BMP files and geo-referenced for inclusion in cross-sections or map views. Depth-converted seismic sections or scanned geological sections can be used as backdrops on model sections.

-Vectors
ESRI Shape files (.SHP)
MapInfo interchange (.MIF)
AutoCad 2D (.DXF)
ER Mapper vector (.ERV)

-Models
ModelVision Pro and Toolkit
(.TKM)Autocad 3D (.DXF)
External links

Export

You have access to a wide range of export facilities for both models and data created within ModelVision Pro.

-Lines
ASEG-GDF2
Oasis montajTM (.GDB)
Geosoft multi-line (.XYZ)
Geosoft single line (.DAT)
Simple XYZ format (.LIN)
TOOLKIT format (.TK)
AMIRA format (.TEM)
External Links (User defined)

-Grids
ER Mapper (.ERS)
ASEG-GXF
Geosoft (.GRD)
USGS (.USG)
Geopak (.GRD)
Encom (.GRD)

-Drillholes
Oasis montaj (.GDB)
Simple XYZ (.LIN)

-Points
Oasis montaj (.GDB)
Simple XYZ (.PTS)
AutoMag solutions

-Models
ModelVision Pro (.TKM)
TOOLKIT (.TK), AutoCAD 3D (.DXF)
UBC mesh model
External link (user defined)
Profile Analyst geocoded sections (.EGB)
GoCAD (tsurf)

ModelVision Pro provides support for Encom Profile Analyst in a variety of methods

including:

Grid (.ERS)
Lines (.GDB)
Holes (.GDB)
Points (.GDB)
Models (.3D .DXF)
Sections (.EGB)
UBC-GIF voxel model
You can save nearly all data, grids and models in a format that is immediately available for visualisation in Profile Analyst.

-Images
Most graphic windows support the creation of high-resolution bitmaps
(BMP) as an export option. These
images are suitable for inclusion in reports.

Filters
Line Convolution
Low/high/band pass
1st/2nd horizontal derivative
1st vertical derivative
Analytic signal
Moving average
Median
Fourth difference
Upward continuation
AGC
Noise generator
Line FFT
Low/high/band pass
1st horizontal derivative
1st vertical derivative
Upward/downward continuation
Reduction to the pole
Pseudo-gravity
Band limited noise generator
Grid Convolution Filters
Average
Gaussian
Low/high/band pass
Laplace
Sharpen
Sobel
Illumination
Noise generator

-FFT Grid Filters
The research capabilities of ModelVision Pro have been extended with the introduction of a comprehensive range of 2D FFT filters that include the following:
Low/high/band pass
x, y, z component transforms
Upward/downward continuation
1st, 2nd vertical derivative
fractional derivatives
x, y horizontal derivatives
reduction to equator
reduction to pole
pseudo-gravity transform
pseudo-magnetic transform

Model Types
ModelVision Pro models are designed to provide convenient methods for creating and editing a range of simple to complex geological shapes.
Polygonal vertical cross-section
with dip
Polygonal horizontal cross-section
> dip
> azimuth
Inclined upper surface
Frustum
Dipping tabular block
Ellipsoid
Sphere
Horizontal elliptic cylinder
Combinations of these basic building blocks can reproduce almost any geological environment.

Inversion Methods
The guided inversion method allows you to free parameters from one or more
bodies at a time. Parameter ranges can also be fixed to ensure that they do not move outside reasonable bounds.

Modelling Methods
-Section (3D)
Create, select and edit models in a single section or multiple geological sections with all the advantages of 2D modelling in a 3D volume. Graphical access to body-specific spatial attributes such as polygon vertices or body location.
-Map (3D)
Create, select and edit models in a map view. Graphical access to body specific spatial attributes such as polygon vertices or body location. Use the body property to access spatial, physical property and visual attributes.
-Field Components
Gravity modelling supports the total gravitation attraction Gx, Gy, Gz and the full gravity tensor Gzz, Gxx, Gyy, Gxy, Gxz, Gyz and some derived components such as the analytic signal.
Magnetic modelling supports the total magnetic intensity Bx, By, Bz and
along-line components and the full magnetic tensor. The along-line component can be used for the axial drillhole component.
-Active Data Zones
ModelVision Pro can work with a complete survey by activating segments of the survey for modelling. This may be a single line, multiple lines or segments of one or more lines. In this way, it is possible to reduce the large computational overhead of modelling large data sets by focusing on anomalous data regions.
-Manual/Immediate/Compression
You can model using compute-on-demand or immediate (real-time) computing modes. If you are working with large data sets and complex models, you can speed up the computation process using a data compression option.
-In-line Filters
You can turn on an active filter that allows you to view your model and field data through the same filter. Use a first vertical derivative filter to improve depth precision or an upward continuation filter for noise affected data.
-Regional 1D/ 2D
Manipulate 1D and 2D regional gravity and magnetic fields depending upon the modelling mode. Auto-compute a starting regional and then use manual editing methods to adjust the shape.

3D Visualisation
Models
Flight path/profiles
Drillholes
Points
3D Grids with colour drape
AutoMag points
Vectors

Map Visualisation
Model
Stacked profiles
Contours
Grid profiles
Vector files
Drill holes
Images
Bitmaps
Points/symbols
AutoMag solutions
Profile vectors
Base lines
Flight path
Legend
North arrow
Coordinate grid

Section Visualisation
Model (colour modulation)
Gravity and magnetic data
Computed magnetic and gravity data
Regional gravity and magnetic field
In-line filters
Auxiliary curves
Vectors
Terrain
Data collection path
Drillholes
AutoMag solutions
Similarity coefficients
Bitmap sections (geocoded)
Titles and legends
Next line function

Utilities
Line and grid calculator
Line interpolation
Synthetic survey generator
Synthetic drillhole generator
Synthetic grid generator
Minimum curvature gridding
Sample grid to lines
Statistics
Data maintenance
IGRF values for anywhere in the world
IGRF grid generator

System Requirements
ModelVision Pro runs on Microsoft Windows . The amount of memory required is operating system dependent. 256MB of RAM is recommended, but ModelVision Pro will run with 128MB on most versions of the operating system.