Well Test Interpretation

Further your knowledge of well testing

Need an enhanced drill stem test interpretation? Seeking deeper well testing comprehension?

This oil and gas training course will cover the reasons for well testing and the information that can be derived from it. The procedures and principles for analyzing vertical well tests will also be applied to horizontal wells. The course will deal with both oil and gas well test interpretation, drillstem tests, wireline formation and production tests, interference tests, detection of boundaries, estimation of stabilized flow rates from short test, etc.

The practice of well test interpretation will be emphasized over the theory. Data validation and the primary pressure derivative (PPD) will be used to illustrate wellbore dynamics and to extricate these effects from the apparent reservoir response. Throughout the course, the instructor will show that Well Test Interpretation (WTI) involves a lot more than simply Pressure Transient Analysis (PTA).

Course Information


Who Should Attend: Petroleum reservoir/production engineers and technologists interested in furthering their knowledge of well testing.

Prerequisites: None required

Tuition: This course is available through the SPE and to in-house groups on request. Please contact us to request a quote

Cancellation Policy: Delivery at IHS Markit training facility - Seats are reserved upon registration, registration constitutes an agreement to pay. Refunds will not be honored for cancellations made within 7 days of your scheduled class (notice to be communicated to Energy.Training@ihsmarkit.com IHS Markit will work with you to reschedule where this is possible. IHS Markit reserves the right to cancel training up to 2 weeks prior to scheduled paid classes, or 2 days for free classes, if minimum class size not met. WebEx Delivery - Sessions are subject to cancellation up to 2 days prior to start date if minimum class size not met.

*Class hours can be used towards APEGA professional development credits.
Topics Covered
  • Introduction: why test, course philosophy, types of tests, fluid types, reservoir types, well test interpretation approaches
  • Basic concepts: simplifying assumptions, drawdown test, typecurves, skin effect, wellbore storage
  • Gas flow considerations: turbulence, pseudo-pressure, pseudo-time
  • Flow regimes – vertical wells: segmented approach, early time (wellbore storage), transient flow (radial), late time (transition)
  • Flow regimes – horizontal wells
  • Useful concepts: radius of investigation, time to stabilization, superposition
  • Drawdown analysis (or injection): procedure, specialized analyses, horizontal wells
  • Buildup analysis: Horner plot, equivalent time, M.D.H. plot, average reservoir pressure, detection of boundaries, other buildup curves, D.S.T., horizontal wells
  • Non-reservoir effects: data validation, wellbore dynamics, primary pressure derivative (PPD)
  • Production forecasting and analysis: transient/stabilized IPR, AOF (sandface/wellhead), production data analysis
  • Test design, complex models, pitfalls, etc.

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