Rock Physics Trivia: MCQ Quiz!

21 Questions | Total Attempts: 119

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Rock Physics Trivia: MCQ Quiz!

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Questions and Answers
  • 1. 
    Calculate the Acoustic Impedance of sand interval with velocity 2500 m/s and density 2.0 g/cc.
    • A. 

      2500 m/s gr/cc

    • B. 

      5000 m/s kg/m3

    • C. 

      5 x 10^6 m/s kg/m3

    • D. 

      2500 m/s kg/m3

  • 2. 
    What is the preference wavelet phase for Seismic Interpretation?
    • A. 

      Maximum Phase

    • B. 

      American convension

    • C. 

      Zero Phase

    • D. 

      Minimum Phase

  • 3. 
    Rock Physics is a branch of science for:
    • A. 

      Understanding the seismic survey

    • B. 

      Understanding the relationship between geophysical measurement and rock properties

    • C. 

      Understanding the relationship between geophysical measurement and the location

    • D. 

      Maximizing the risk in hydrocarbon exploration

  • 4. 
    What is the main difference between Petrophysics and Rock Physics?
    • A. 

      Petrophysics more emphasis on stress, faulting, fracture processes

    • B. 

      Petrophysics more emphasis on interpreting seismic, sonic and ultrasonic data

    • C. 

      Petrophysics more emphasis on well logs, and often ignoring sonic logs and seismic

    • D. 

      Petrophysics more emphasis on seismic survey

  • 5. 
    Petrophysical / Geological Model can be used to differentiate. 
    • A. 

      DHI

    • B. 

      AVO Classes

    • C. 

      Depth Trends

    • D. 

      All are correct

  • 6. 
    Which of the following giving negative amplitude response (SEG polarity, Period: Tertiary)?
    • A. 

      Shale overlying Reservoir Gas Sand

    • B. 

      Shale overlying soft shale

    • C. 

      Shale overlying coal

    • D. 

      All are correct

  • 7. 
    The velocity responses to rocks based on, EXCEPT:
    • A. 

      Porosity and pore geometry

    • B. 

      Fluid type and saturation

    • C. 

      Type of acquisition

    • D. 

      Mineral composition and distribution

  • 8. 
    In terms of effective porosity, choose the correct explanation about cementation:
    • A. 

      Loose become stable

    • B. 

      Compaction

    • C. 

      Overburden

    • D. 

      Deposition of dissolved material

  • 9. 
    Reservoir porosity can be classified to several classes, choose the porosity value for very good reservoir.
    • A. 

      0-5 %

    • B. 

      Below 15%

    • C. 

      Above 20%

    • D. 

      Between 5 to 10%

  • 10. 
    Choose the correct answer for the production from unconventional reservoir.
    • A. 

      The hydrocarbon produced from low porosity formation through secondary porosity

    • B. 

      The hydrocarbon produced from low porosity formation through primary porosity

    • C. 

      Brittleness index is not important

    • D. 

      None of the above

  • 11. 
    Choose the correct answer for density definition.
    • A. 

      Ratio between shear and bulk modulus

    • B. 

      Ratio between bulk modulus and poisson ratio

    • C. 

      Ratio between porosity and volume

    • D. 

      Ratio between mass and volume

  • 12. 
    Choose the correct statement about density.
    • A. 

      Density of quartz mineral (zero porosity ) is 2.65 gr/cc

    • B. 

      Density of calcite (zero porosity) is 2.71 gr/cc

    • C. 

      Density is the ratio between mass and volume

    • D. 

      All of the above

  • 13. 
    Choose the correct statement on Bulk Modulus.
    • A. 

      Bulk modulus of water is zero

    • B. 

      Bulk Modulus of gas is higher than oil

    • C. 

      Bulk Modulus of gas is higher than water

    • D. 

      Bulk Modulus of water is higher than gas

  • 14. 
    Poisson Ratio is
    • A. 

      The ratio of extensional stress to extensional strain in a uniaxial stress state

    • B. 

      The ratio of the lateral strain to axial strain in a uniaxial stress state

    • C. 

      The ratio of the pressure applied to the amount of volume change in the cube

    • D. 

      The ratio of shear wave velocity

  • 15. 
    Choose the correct statement about Vp/Vs.
    • A. 

      Can be used to separate different rock type and fluids

    • B. 

      The response can differentiate between coal and gas sand

    • C. 

      The response can be created from slowness logs: shear and primary

    • D. 

      All of the above

  • 16. 
    Young Modulus is
    • A. 

      The ratio of extensional stress to extensional strain in a uniaxial stress state

    • B. 

      The ratio of the lateral strain to axial strain in a uniaxial stress state

    • C. 

      The ratio of the pressure applied to the amount of volume change in the cube

    • D. 

      The ratio of shear wave velocity

  • 17. 
    The Quartz minerals have:
    • A. 

      High Poisson’s Ratio

    • B. 

      Low Poisson’s Ratio

    • C. 

      Higher Poisson’s Ratio than clay minerals

    • D. 

      High Poisson’s Ratio compare to Calcite

  • 18. 
    In shallow high porosity sand region:
    • A. 

      The AI of gas sand lower than shale formation

    • B. 

      The AI of gas sand lower than brine sand

    • C. 

      The Vp/Vs of gas sand lower than brine sand

    • D. 

      All of the above

  • 19. 
    In low porosity sand region:
    • A. 

      The AI of brine sand lower than shale formation

    • B. 

      The AI of gas sand lower than brine sand

    • C. 

      The Vp/Vs of gas sand higher than brine sand

    • D. 

      All of the above

  • 20. 
    Empirical models used in Rock Physics, EXCEPT:
    • A. 

      Castagna’s equation

    • B. 

      Wyllie’s equation

    • C. 

      Han’s equation

    • D. 

      Voigt and Reuss

  • 21. 
    Castagna’s empirical relations:
    • A. 

      Predict the shear velocity from compressional velocity

    • B. 

      Predict porosity from compressional velocity

    • C. 

      Predict clay content from compressional velocity

    • D. 

      Predict Vp from compressional velocity

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