EUR (Estimated Ultimate Recovery) Vs Reserves

Petroleum Engineering Topic Explanation Of The Difference Between EUR (Estimated Ultimate Recovery) & Reserves


An in-depth explanation of the primary differences between EUR (Estimated Ultimate Recovery) and Reserves within an Evaluation inside PHDWin Software by our lead petroleum engineer, Kurt Mire, perfect for students and other industry professionals looking to expand their knowledge about oil and gas evaluations!

EUR (Estimated Ultimate Recovery) Vs Reserves Table Of Contents

  1. Difference Between Reserves and EUR (Estimated Ultimate Recovery):
  2. Types Of Reserves:
  3. Recap:

EUR (Estimated Ultimate Recovery) Vs Reserves Study Guide

EUR (Estimated Ultimate Recovery) Vs Reserves Google Slide/PowerPoint

1.) Difference Between Reserves and EUR (Estimated Ultimate Recovery)

  • EUR is the ultimate amount of oil & gas that will be produced over the life of a well
  • Reserves are volumes of oil and gas that are left to produce
  • Knowing the ‘as of’ date is crucial to determine which is which

2.) Types Of Reserves

  • Crude Oil
  • Condensate
  • Associated Gas
  • Non Associated Gas
  • Natural Gas Liquids (NGL’s)

3.) Recap

  • Reserves are always remaining
  • Reserves change everyday when the well is producing
  • If you change the ‘as of’ date, the reserves will also change
  • The only time EUR & reserves are the same is before you drill the well

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