Petroleum Geology – MCQs 50 Score: 0 Attempted: 0/50 Subscribe 1. Petroleum geology primarily studies: (A) The chemistry of crude oil (B) The origin, occurrence, movement, and exploration of hydrocarbons (C) The refining of petroleum (D) The transportation of oil and gas 2. Most petroleum is found in which type of rocks? (A) Igneous (B) Sedimentary (C) Metamorphic (D) Volcanic 3. The source rock for most hydrocarbons is: (A) Shale (B) Sandstone (C) Granite (D) Basalt 4. Reservoir rocks are mainly: (A) Sandstone and limestone (B) Granite and basalt (C) Schist and gneiss (D) Coal and gypsum 5. The cap rock in a petroleum trap functions to: (A) Generate hydrocarbons (B) Store hydrocarbons (C) Prevent hydrocarbons from escaping (D) Increase porosity 6. Porosity in reservoir rocks indicates: (A) Storage capacity of fluids (B) Flow capacity of fluids (C) Strength of the rock (D) Density of the rock 7. Permeability in rocks refers to: (A) Color of the rock (B) Ability to transmit fluids (C) Strength against pressure (D) Age of the rock 8. Which of the following is NOT a type of petroleum trap? (A) Structural trap (B) Stratigraphic trap (C) Combination trap (D) Hydraulic trap 9. An anticline is an example of a: (A) Stratigraphic trap (B) Structural trap (C) Salt dome (D) Combination trap 10. Salt domes act as traps because: (A) Salt dissolves hydrocarbons (B) Salt is impermeable and deforms surrounding rocks (C) Salt generates petroleum (D) Salt increases porosity 11. The main element in hydrocarbons is: (A) Carbon (B) Oxygen (C) Nitrogen (D) Sulfur 12. Which of the following methods is commonly used for petroleum exploration? (A) Seismic surveys (B) Radiocarbon dating (C) Soil sampling (D) Fossil analysis 13. Migration of hydrocarbons occurs due to: (A) Gravitational force (B) Buoyancy and pressure differences (C) Evaporation (D) Rock dissolution 14. Which gas is often associated with petroleum reservoirs? (A) Oxygen (B) Methane (C) Carbon dioxide (D) Helium 15. Source rocks are rich in: (A) Organic matter (B) Quartz (C) Feldspar (D) Carbonates only 16. Maturation of hydrocarbons takes place under: (A) Low temperature and low pressure (B) High temperature and pressure (C) Only atmospheric pressure (D) Only solar heat 17. The petroleum system consists of: (A) Source, migration, reservoir, trap, seal (B) Drilling, refining, transport, marketing (C) Coal, gas, oil, water (D) Rocks, soil, fossils 18. Oil window refers to the depth range where: (A) Gas is formed (B) Oil is generated from kerogen (C) Coal is formed (D) Water accumulates 19. Gas window refers to: (A) Shallow oil formation (B) High-temperature generation of natural gas (C) Condensation of oil (D) Evaporation of crude oil 20. Kerogen is: (A) A type of reservoir rock (B) Solid organic matter in source rocks (C) A refining byproduct (D) A type of drilling mud 21. Which geophysical method is most widely used for petroleum exploration? (A) Magnetic survey (B) Seismic reflection (C) Electrical resistivity (D) Gravity survey 22. Primary migration occurs from: (A) Source rock to reservoir rock (B) Reservoir to surface (C) Cap rock to trap (D) One well to another 23. Secondary migration occurs from: (A) Reservoir rock to surface or trap (B) Source rock to cap rock (C) Drilling site to pipeline (D) Oil well to refinery 24. A stratigraphic trap is formed due to: (A) Folding and faulting (B) Lithological changes or unconformities (C) Salt intrusion (D) Reservoir pressure 25. Which is considered the best type of source rock? (A) Sandstone (B) Limestone (C) Shale (D) Granite 26. A dry hole refers to: (A) A well producing only water or no hydrocarbons (B) A fully producing well (C) A geothermal well (D) An abandoned mine 27. Which is a common reservoir drive mechanism? (A) Water drive (B) Gas cap drive (C) Solution gas drive (D) All of the above 28. Bitumen is primarily found in: (A) Coal beds (B) Oil sands (C) Salt domes (D) Shale only 29. The term “capillary pressure” in reservoirs relates to: (A) Pressure due to drilling mud (B) Force that moves fluids through pores (C) Hydrocarbon refining (D) Pressure at the surface 30. Petroleum reservoirs usually contain three phases: (A) Gas, oil, water (B) Gas, coal, water (C) Oil, minerals, gas (D) Oil, sand, shale 31. Which of the following is a non-conventional petroleum resource? (A) Oil sands (B) Shale oil (C) Coal-bed methane (D) All of the above 32. The main agent for hydrocarbon generation is: (A) Temperature (B) Pressure (C) Time (D) All of the above 33. The term “reservoir drive” means: (A) A drilling rig (B) A mechanism for hydrocarbon production (C) A petroleum trap (D) A refining process 34. Oil shales are rich in: (A) Quartz (B) Kerogen (C) Carbonates (D) Sulfides 35. Which geological structure often indicates hydrocarbon traps? (A) Anticlines (B) Synclines (C) Normal faults (D) Igneous dykes 36. The main control on hydrocarbon accumulation is: (A) Tectonic activity (B) Presence of trap, seal, reservoir, and source rock (C) Age of rock (D) Rock density 37. Petroleum systems require: (A) Only reservoir rock (B) Only cap rock (C) Source, reservoir, seal, and trap (D) Migration and drilling only 38. Tar sands are mainly found in: (A) Saudi Arabia (B) Canada (C) Russia (D) China 39. A gas cap in a reservoir occurs: (A) Below oil (B) Above oil (C) Mixed with water (D) Outside the trap 40. Which hydrocarbon phase is the lightest? (A) Oil (B) Gas (C) Water (D) Tar 41. The “trap” in petroleum geology ensures: (A) Hydrocarbons escape to surface (B) Hydrocarbons accumulate and remain sealed (C) Hydrocarbons are destroyed (D) Hydrocarbons dissolve in water 42. The primary origin of petroleum is: (A) Inorganic theory (B) Organic matter buried in sediments (C) Meteorites (D) Magma crystallization 43. Biogenic gas is formed at: (A) High temperature (B) Low temperature by microbial activity (C) Deep burial (D) High pressure only 44. Thermogenic gas is formed by: (A) Microbial action (B) High temperature breakdown of organic matter (C) Coal combustion (D) Evaporation of oil 45. Which type of basin is favorable for petroleum accumulation? (A) Rift basins (B) Foreland basins (C) Passive margins (D) All of the above 46. Which of the following is NOT used in petroleum geology exploration? (A) Seismic reflection (B) Gravity surveys (C) Magnetic surveys (D) DNA sequencing 47. Oil-prone kerogen type is: (A) Type I (B) Type II (C) Type III (D) Type IV 48. Gas-prone kerogen type is: (A) Type I (B) Type II (C) Type III (D) Type IV 49. Which is the main factor for the quality of petroleum reservoirs? (A) Porosity and permeability (B) Color of rock (C) Fossil content (D) Rock hardness 50. Petroleum geology is essential because it: (A) Ensures efficient exploration of hydrocarbons (B) Studies only rock structures (C) Deals only with fossils (D) Focuses only on refining FOUNDATIONAL SUBJECTS (Year 1 – Year 2)Engineering Mechanics (Statics & Dynamics) – MCQsFluid Mechanics – MCQsThermodynamics – MCQsComputer Programming (e.g., MATLAB, Python) – MCQsIntroduction to Engineering – MCQsGeology for Engineers – MCQsTechnical Communication – MCQs CORE PETROLEUM ENGINEERING SUBJECTS (Year 2 – Year 4)Introduction to Petroleum Engineering – MCQsPetroleum Geology – MCQsDrilling Engineering – MCQsReservoir Engineering – MCQsProduction Engineering – MCQsPetroleum Fluid Properties – MCQsWell Logging and Formation Evaluation – MCQsPetroleum Economics – MCQsPetroleum Refining and Processing – MCQs Natural Gas Engineering – MCQsEnhanced Oil Recovery (EOR) – MCQsWell Testing – MCQsReservoir Simulation – MCQsDrilling Fluids and Cementing – MCQsOffshore Petroleum Engineering – MCQsHealth, Safety and Environment (HSE) – MCQsPetroleum Project Management – MCQsCorrosion Engineering – MCQsArtificial Lift Techniques – MCQsPetrophysics – MCQs LABORATORIES & PRACTICALS (Theory-based MCQs can be made from these)Drilling Fluids Lab – MCQsCore Analysis Lab – MCQsReservoir Simulation Lab – MCQsRock and Fluid Properties Lab – MCQsWell Logging Lab – MCQs ELECTIVES (Optional/Advanced)Energy Transition and Sustainability – MCQsUnconventional Resources (Shale, Tight Gas, etc.) – MCQsData Analytics in Petroleum Engineering – MCQsGeographic Information Systems (GIS) – MCQsPetroleum Law and Policy – MCQsPipeline Engineering – MCQsRenewable Energy Integration – MCQs