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24-Pet-A2 Petroleum Reservoir Fluids: Undated paper

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

  1. Question 1 Reservoir Fluid Property Trends & Oil-in-Place
  2. Question 2 Phase Diagrams – P-T Envelopes, P-V Behaviour, Ternary Systems
  3. Question 3 P-T Diagram Interpretation, Real-Gas Limitations & API Blending
  4. Question 4 Gas Tank PVT & Gas-Mixture Viscosity
  5. Question 5 Reservoir Oil & Gas Density and Flow Rates
  6. Question 6 Gas Stream z-Factor, Density and Formation Volume Factor

Start with Question 1 →

EGBC National Exam — Petroleum Engineering, 17-Pet-A2 Petroleum Reservoir Fluids, National Examinations May 2019. 3 hours duration, closed book, formula sheet supplied, personal scientific calculator permitted. SIX questions are printed on the paper; per the exam's own instructions, any FIVE constitute a complete answer paper. Every question is solved in full below (all six, not just the five a candidate would normally submit) so this set also serves as complete study material.

Reference texts: McCain, W.D., The Properties of Petroleum Fluids, 3rd ed. (PennWell); Ahmed, T., Reservoir Engineering Handbook, 5th ed.; Standing, M.B., Volumetric and Phase Behavior of Oil Field Hydrocarbon Systems; Craft, B.C. & Hawkins, M.F., Applied Petroleum Reservoir Engineering, 3rd ed.

Check: two graphical-correlation questions (4B's Carr et al. gas-viscosity chart, and 6a's Standing-Katz z-factor chart) are answered using the standard published Lee-Gonzalez-Eakin (1966) gas-viscosity correlation and the Dranchuk & Abou-Kassem (1975) z-factor equation of state respectively – both are the accepted numerical proxies for reading these two charts precisely, and are flagged again at each point of use.