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24-Pet-A6 Well Logging and Formation Evaluation: May 2015

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Reservoir-Engineering Short Answers
  2. Question 2 Producing GOR and Gas-Injection Material Balance
  3. Question 3 Gas-Well Decline Curve — Type, Reserves and Economic Limit
  4. Question 4 Pressure Communication Between Two Wells
  5. Question 5 Saturations from Material Balance and Layered Vertical Permeability
  6. Question 6 Exponential and Harmonic Decline — Producing Life and Cumulative Production
  7. Question 7 Pressure Buildup Test — Afterflow, Permeability, Skin
  8. Question 8 Method for Determining Gas Volume Initially in Place

Start with Question 1 →

98-Pet-A6 — Reservoir Mechanics · National Exams, May 2015 · 3 hours, closed book, Casio/Sharp approved calculator only · eight problems set (candidates answer Problems 1 and 2 plus any three of the remaining six per the exam's own instructions; all eight are solved in full below as a complete study resource), all questions equal value.

Reference texts: Craft, B.C. & Hawkins, M.F., Applied Petroleum Reservoir Engineering, 3rd ed. (material balance, decline curves, transient well testing, permeability averaging); Ahmed, T., Reservoir Engineering Handbook, 5th ed. (material balance, decline-curve analysis, pressure buildup, PVT correlations); Golan, M. & Whitson, C.H., Well Performance, 2nd ed. (reserves methods, water/gas influx); Lyons, W.C. (ed.), Standard Handbook of Petroleum and Natural Gas Engineering, 3rd ed.

Check: this paper's own title page reads “98-PET-A6: Reservoir Mechanics”, not “Well Logging and Formation Evaluation” — the subject heading it is listed under does not match its content. Every problem below is answered as the paper actually printed it (material balance, decline-curve analysis, pressure-transient testing and permeability averaging — classic Reservoir Mechanics/Fundamental Reservoir Engineering topics), not well-logging.