Basic Concepts of Geostatistics for the Oil & Gas industry – Data Analysis and Variography | Training course

Learn how to perform insightful data analysis and variography for reservoir modeling.


Session 1

  • General overview of geostatistics for Oil & Gas applications:
    – Basic probability and statistics (univariate and bivariate)
    – Reminders about basic probability and statistics: distributions, mean, variance, correlation coefficient, linear regression…
  • Importance of data sampling, model resolution, scales
  • PCA
  • Demonstration with Isatis: Use of linked windows and statistics for experimental data analysis

Session 2

Experimental Variogram:

  • The basic tool of geostatistics: quantifying spatial correlation with the variogram. Computation of the experimental variogram, recommendations about variogram calculation parameters: homogeneity of the population, high values…
  • Demonstration with Isatis: experimental variogram computation
  • Variogram maps and anisotropies

Session 3

  • Univariate variogram fitting:
    – General principles
    – Classical variogram models
    – Demonstration with Isatis: the choice of the variogram model
  • Automatic variogram fitting

Session 4

  • Multivariate variogram fitting principles:
    – General principles
    – The linear model of coregionalization
    – Automatic variogram fitting (multivariate case)
  • Nested variogram models
  • Demonstration with Isatis: multivariate variogram fitting examples




The course is delivered in one-to-one 4×2-hour online training sessions over 4 consecutive days by our experienced instructors.

You only need an internet connection and headphones with a microphone.

Although examples are given with Isatis software, the concepts and methodologies that will be addressed can easily be applied using your usual geomodeling software package.

This course is part of a live online training program to quickly get acquainted with the essential concepts and methodologies of geostatistics applied to reservoir characterization and modeling​.

Courses are given as one-to-one sessions for quality content, better suited to your needs and issues, and facilitated exchange between trainee and trainer.

Note that if the provided scheduled dates are not compatible with your agenda, we invite you to contact us to arrange your own schedule. Course content may also be adapted to your needs on demand.

To learn the fundamentals of geostatistics:

To go further with geostatistics: