NivaarExam PrepOfficial exam papers ↗

18-Geol-A7 Applied Geophysics: May 2015

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

  1. Question 1 Physical Properties in Applied Geophysics
  2. Question 2 Seismic Reflection vs. Refraction Surveys
  3. Question 3 Planning, Acquiring, Processing and Interpreting a Magnetotelluric Survey
  4. Question 4 Geophysics in Oil and Gas Exploration
  5. Question 5 Time-Domain vs. Frequency-Domain Geophysical Instruments
  6. Question 6 Magnetic Anomaly Variation with Latitude and Reduction Methods
  7. Question 7 Displaying and Enhancing Geophysical Data
  8. Question 8 Geophysical Well-Logging Tools
  9. Question 9 The Geophysical Project Workflow – A Case History

Start with Question 1 →

National Exams — May 2015 — 04-Geol-A7 Applied Geophysics. Three-hour, closed-book exam; no calculator permitted. The NOTES state that SIX questions constitute a complete paper (the first six as they appear in the answer book), but the printed paper offers a choice of six of the following nine questions, and every question requires an essay-format answer with no numeric data, formula sheet or figure supplied — this is an all-essay paper. All nine questions are answered below.

Reference texts: Telford, Geldart & Sheriff, Applied Geophysics (2nd ed.) — the primary reference for every method touched in this paper (gravity, magnetics, seismic reflection/refraction, resistivity, IP, EM, radiometrics, well logging); Kearey, Brooks & Hill, An Introduction to Geophysical Exploration (3rd ed.) — survey planning, data display and case-history context; Blakely, Potential Theory in Gravity and Magnetic Applications — magnetic anomaly shape and reduction-to-pole theory (Q6); Simpson & Bahr, Practical Magnetotellurics (Q3); Selley & Sonnenberg, Elements of Petroleum Geology (Q4, Q8 well-logging context).