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ISATIS v4.0 (c)geovariances

satis is the Reference geostatistical software solution which offers, in a single integrated package, an exclusive range of proven geostatistical techniques for in-depth data analysis, estimation and simulations.

Using ISATIS, you can be sure of the reliability of your results: robust geostatistics techniques, well researched algorithms, exclusive agreement with Mines ParisTech Geostatistics Group, professional expertise confirmed by 25 years of experience in geostatistics.

ISATIS numerous interfaces with professional standard software packages allows to load a wide variety of data and output the results in a format best suited to your needs.

ISATIS batch functionalities enable automatic procedures for updating and easy reproduction of workflows.

Additional plug-ins are available from Geovariances: Import and Export interfaces with Schlumberger PETREL® and Roxar RMS® – Gemcom GEMS®, Paradigm GOCAD® and Beicip RML® also provide direct links with Isatis.


* Data Integration

o Import: ASCII, Binary, Arcview Shapefile and grids, Boreholes with Deviation Survey Data, Datamine, DXF (Autocad), Excel, Gslib, Image files (PNG, GIF and BMP), Irap Classic, LAS, ODBC, RML – Heresim 3D, SEG-Y, Vulcan, Z-Map Plus.
o Export: ASCII, Binary, Arcview, CMG, Datamine, Eclipse, Geocap, Gslib, Irap Classic, RML – Heresim 3D, SEG-Y, TIFF, Vulcan, VIP, Whittle Four-D, Z-Map Plus.
o Direct link to ISATIS in Gocad® (from Paragdim), Petrel® (from Schlumberger) the RML® (from Beicip Franlab) and Gems® (from Gemcom).
o Direct link to RMS® (Roxar) in Isatis.
* Data Management

o File Manager. Variable Editor.
o Several selection utilities to build masks on samples (i.e. interactive selection of samples from a graphical basemap, intervals on numerical variables, patterns on alphanumerical variables, polygons, wireframes and convex hull, macro-selections to handle domaining).
o Various tools for data manipulation between files.
o Management of polygons (2D/3D) and wireframes.
* Data Manipulation

o Advanced scientific calculator to modify or create new variables (includes mathematical, Boolean and interval operators, mathematical, trigonometric, date and statistical functions).
o Alphanumerical encoding/decoding.
o Variable transformation (normation, truncation)
o Cross-files statistics.
o Compositing of drillholes (by benches, by length, by domains).
o Declustering (weighted variable).
o Service variables (estimation of recoverable resources).
o Discretization and flattening of wells to work in homogeneous geological units.
o Unfolding and folding of geological units (3D lines and grids).
* Exploratory Data Analysis

o Classical statistics computation (univariate, multivariate).
o Computation and display of different statistics (possibly weighted): basemap, histograms, cross-plots, grade-tonnage curves, standard QQ-plots and PP-plots, experimental variograms and related functions (covariances, 1st order variograms, variogram cloud) in any direction of the space (3D, 2D or 1D), variogram maps (2D and 3D), H-scatter Plots.
o Average experimental variogram. Refined experimental variogram lags at small distances.
o Unique ability of picking data in the linked graphic windows for identifying spatial variability and masking possible outliers or anomalous data as well as for evaluating the impact of the choice of the distance of the lags.
* Statistics

o Principal Component Analysis.
o Minimum/ Maximum Autocorrelation Factors.
o Cloud transform simulation.
o Gibbs Sampler to compute new gaussian variables from variables affected by a strong Zero Effect.
* Domaining

o Border effect to characterize the relationships between domains and grades.
o Contact analysis to illustrate the grade behavior at the contact between two domains.


* Stationary variables:

o 2D-3D variogram modeling with geometrical and/or zonal anisotropies.
o 2D/3D isotropic and directional variogram, identification of directions and scales of continuity through unique 3D interactive variogram map
o Multi-directional display of experimental variograms.
o Exhaustive set of variogram models.
o Interactive graphical fitting of variograms.
o Automatic sill fitting of simple and cross variograms.
o Automatic variogram modeling: automatic model initialization from a given combination of basic structures in each direction and for each variable.
o Truncated gaussian variogram modelling: fit the underlying Gaussian random functions of zero-effect variables or indicators.
o Fitting of a punctual model using an experimental regularized variogram.
o Average model.
o Variograms on large simulated grids. Algorithm based upon FFT.
* Non-stationary variables:

o Automatic drift identification (IRF-k, external drift functions, automatic covariance recognition).
o Global trend modeling.
Product:ISATIS v4.0 (c)geovariances