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Rate Transient Analysis and Production Decline Interpretation (RES78)


    Rate Transient Analysis (RTA) went through a long journey from Arnold and Arps plots in the first half of 20th century through Fetkovitch in 80-thies and Blasingname into a modern software aided RTA. The broader use of permanent pressure gauges in wells enabled the introduction of comprehensive interpretation of production decline. This course provides structured information about the interpretation methods starting with type curves through the contemporary state of art software-based analysis. It demonstrates how Pressure Transient Analysis (PTA) interacts with RTA. A dedicated module presents examples of RTA and PTA analysis and interpretation. Further it demonstrates how the results of RTA can enable production predictions including sensitivities. RTA of gas reservoirs is handled in a separate module.

    Course Level: Skill
    Duration: 3 days
    Instructor: Lukasz Ostrowski

    Designed for you, if you are...

    • A geologist, petrophysicist, reservoir engineer, supervisor or manager involved in formation evaluation, reserve estimation and general reservoir engineering
    • Directly reservoir management and production enhancement or prediction
    • A professional with basic reservoir engineering knowledge

    Previous experience in well testing is not required.

    How we build your confidence

    • A comprehensive overview of RTA methodology
    • The course provides the theoretical background including reservoir models and boundary conditions
    • Step-by-step introduction in rate transient analysis and methodology helps understand the functionality of specialised interpretation software
    • Demonstration of commercial software for well test interpretation with practical examples

    The benefits from attending

    By the end of the course, you will feel confident to:
    • Select appropriate interpretation methodology depending on the availability of pressure data.
    • Decide on what data portion needs to be selected for meaningful analysis.
    • Understand the theory and practical application of RTA and decline curve analysis.
    • Use commercial software for well test interpretation.
    • Be in position to apply deconvolution to forecast production by defining a scenario of producing pressures.


    • Role of RTA in reservoir management
    • Methodology of rate transient analysis
      - Traditional decline curve analysis
      - State of Art software aided RTA
      - How to treat gas reservoirs
    • Prediction of future production
    • RTA versus PTA
    • Interpretation approach
      - Diagnostic tools
      - Superposition concept
      - Deconvolution in RTA
      - PTA for diagnosing of near wellbore conditions, reservoir behaviour and boundaries



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