On-Demand Webinars

MODULE THREE starts with understanding the Theis Model: the foundation of pumping test interpretation. The underlying assumptions of the Theis model are reviewed.

The discussion is followed by the development and application of the analyses based upon it. Although the assumptions underlying the Theis model may be violated to varying degrees during actual tests, the model has enduring value as a benchmark against which the observed responses to pumping can be assessed, supporting the diagnosis of site conditions.

Emphasis will be placed on applying the Theis model appropriately to yields representative estimates of the bulk average transmissivity of a formation.

Outline:

1. The Theis (1935) conceptual model
2. The mathematics of the Theis solution
3. Example Theis analysis
4. The Cooper and Jacob (1945) approximation
5. Overview of the Cooper-Jacob analyses
6. Cooper Jacob time drawdown analysis
7. Motivation for using Cooper-Jacob time drawdown analysis
8. Choosing between the Theis and Cooper-Jacob analyses
9. Introduction to Derivative Analysis
10. Cooper Jacob distance drawdown analysis
11. Composite analyses
12. Case study: Application of the Cooper Jacob composite analysis
13. Summary of key points
14. References

Proficiency Test:
Confirm your knowledge after the course module with a self-test.

Instructors Bio

Christopher J. Neville, M.Sc., P.Eng.

Mr. Neville is Chief Hydrogeologist with S.S. Papadopulos & Associates, Inc. He has over thirty years of experience in solving groundwater problems. His specialization is in the interpretation of hydrogeologic data, and the development and application of analytical and numerical techniques to analyze groundwater problems in complex granular and fractured porous media. Mr. Neville received his Bachelor of Engineering degree (Civil) in 1985 from McGill University and his Master of Science degree (Earth Sciences) from the University of Waterloo in 1992.