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24-Pet-B4 Well Testing: December 2016

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

  1. Question 1 Five conditions for a commercial petroleum accumulation
  2. Question 2 Define Lignin, Vitrinite, Sapropelic kerogen, Catagenesis
  3. Question 3 Silled, salinity-stratified basin – organic carbon and dissolved oxygen profile
  4. Question 4 Typical API gravity and viscosity of heavy oil, light oil, bitumen and water
  5. Question 5 Chemical and structural formulas – Octane, Benzene, Ethane, Phenol
  6. Question 6 API gravity formula and typical light/heavy oil ranges
  7. Question 7 Define Tight oil, Halo oil, Bitumen, SAGD
  8. Question 8 Best development method for a tight-oil reservoir
  9. Question 9 Two methods for developing a bitumen-saturated sandstone reservoir – SAGD and CSS
  10. Question 10 Bitumen-saturated estuarine point-bar – well placement, completion, and reservoir controls
  11. Question 11 Shale gas vs. tight gas plays
  12. Question 12 Typical matrix permeability and porosity of economic shale gas plays
  13. Question 13 Rock and reservoir characteristics controlling economic shale gas exploitation
  14. Question 14 Why coalbed methane is considered unconventional
  15. Question 15 Face cleat vs. butt cleat
  16. Question 16 How gas is stored in a coal bed
  17. Question 17 Define and illustrate Rimmed platform, Ramp, Sabkha, Lagoon
  18. Question 18 Detached carbonate bank – geomorphology and reservoir potential
  19. Question 19 Typical latitudes for carbonate bank formation
  20. Question 20 Prograding wave-dominated delta – profile and plan-view map
  21. Question 21 Grain size vs. permeability and porosity
  22. Question 22 Diagenetic processes in sandstones and their impact on porosity and permeability

Start with Question 1 →

EGBC National Exam — Petroleum Engineering, 2016-Dec. 3 hours duration; closed book. This sitting's own cover page reads “98-Pet-B4, Petroleum Geology” and every question is descriptive/interpretive petroleum geology (source rocks, hydrocarbon chemistry, oil sands and tight-oil development, shale gas and coalbed methane, carbonate traps, siliciclastic/deltaic traps) – no well-test pressure-transient content anywhere. Five (5) of the paper's six 20-mark sections are marked (NOTES item 5); all six are solved in full below so this set also serves as a complete study reference. This sitting's Section 6 is a Siliciclastic Traps section (wave-dominated delta, grain-size–permeability–porosity relations, sandstone diagenesis). The paper is entirely qualitative (draw/describe/define/list), with no numeric given data anywhere.

Reference texts: Selley, R.C. & Sonnenberg, S., Elements of Petroleum Geology, 3rd ed., Academic Press (source rocks, migration, traps, carbonate systems, oil sands); Tissot, B.P. & Welte, D.H., Petroleum Formation and Occurrence, 2nd ed., Springer (kerogen typing, maceral groups, catagenesis); Boggs, S. Jr., Petrology of Sedimentary Rocks, 2nd ed., Cambridge (source-rock, deltaic and carbonate lithofacies; sandstone diagenesis); James, N.P. & Jones, B., Origin of Carbonate Sedimentary Rocks, Wiley-Blackwell (carbonate platform/ramp/sabkha facies models); Butler, R.M., Thermal Recovery of Oil and Gas, Prentice Hall, 1991 (SAGD, CSS, oil sands thermal recovery); Green, D.W. & Willhite, G.P., Enhanced Oil Recovery, SPE Textbook Series Vol. 6 (thermal EOR mechanisms); Law, B.E. & Curtis, J.B., “Introduction to Unconventional Petroleum Systems,” AAPG Bulletin 86, 2002 (shale gas, tight gas, coalbed methane); Lee, W.J. & Wattenbarger, R.A., Gas Reservoir Engineering, SPE Textbook Vol. 5 (unconventional gas reservoir characterization).