Well Test Interpretation

Reservoir Descriptions and Dynamics Production and Operations

Course Description

This course examines the fundamentals of well test interpretation for oil and gas wells. It covers the analysis of tests in vertical and horizontal wells: drillstem tests, wireline formation tests, flow/build-up tests, injection/fall-off tests interference/pulse test. Determination of permeability and damage, estimation of stabilized flow rates from short tests, detection of boundaries etc. The practice of well test interpretation will be emphasized along with the theory. To this end, Data Validation and the PPD (Primary Pressure Derivative) will be used to illustrate Wellbore Dynamics, and extricate these effects from the reservoir response. The concepts will be presented graphically (using a computer), thus keeping equations to a minimum. The practical aspects of the interpretation process will be highlighted.


  • What reservoir information can be derived from a well test
  • Understand a well test analysis report
  • Recognize that alternative interpretations may be possible
  • Derive long term production forecast from a short test
  • Recognize strengths and limitations of well test interpretation

Learning Level


Course Length

3 Days

Why Attend

This is a fundamental course for engineers new to well testing. This course will show how well testing gives a better understanding of the reservoir and its production performance.

Who Attends

Reservoir and production engineers.

Special Requirements

A laptop computer is needed for this course.


2.4 CEUs (Continuing Education Units) are awarded for this 3-day course.

Cancellation Policy

All cancellations must be received no later than 14 days prior to the course start date. Cancellations made after the 14 day window will not be refunded.  Refunds will not be given due to no show situations.

Training sessions attached to SPE conferences and workshops follow the cancellation policies stated on the event information page.  Please check that page for specific cancellation information.

SPE reserves the right to cancel or re-schedule courses at will.  Notification of changes will be made as quickly as possible; please keep this in mind when arranging travel, as SPE is not responsible for any fees charged for cancelling or changing travel arrangements.

We reserve the right to substitute course instructors as necessary.

Full regional cancellation policies can be found at the Cancellation Policy page within the SPE Training Course Catalog.


Louis Mattar, BSc, MSc, P. Eng., is principal reservoir advisor at IHS Markit. As an energy consultant he has been serving reservoir engineering clients since 1981. He specializes in the interpretation of well tests and pressure/production data. Mattar previously worked for Alberta’s Energy Resources Conservation Board (ERCB), where he wrote Gas Well Testing—Theory and Practice (1975). He also taught reservoir engineering at the University of Calgary and has authored some 80 technical publications. He is an SPE Distinguished Lecturer and an SPE Distinguished Member.

Additional Course Resources

This course has a supplemental book located in our SPE Bookstore entitled Applied Well Test Interpretation. Please check out this valuable resource!