Porosity and Compressibility in Reservoir Geology
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Questions and Answers

What happens to the actual grain size as pore pressure is reduced in a compressible reservoir?

  • The grain expands (correct)
  • The grain remains unchanged
  • The grain shrinks
  • The grain becomes more porous

    • What effect does overburden pressure have on pore volume in less competent formations as reservoir pressure declines?

  • Reduces pore volume (correct)
  • Causes pore pressure to rise
  • Maintains pore volume
  • Increases pore volume

    • What is the approximate compressibility of Quartz in a compressible reservoir?

  • 2 x 10^-5 vol/vol/psi
  • 6 x 10^-7 vol/vol/psi
  • 4 x 10^-6 vol/vol/psi (correct)
  • 1 x 10^-4 vol/vol/psi

    • Which of the following statements is true regarding the compressibility of grains in a reservoir?

    <p>Grains are compressible</p> Signup and view all the answers

    How does reducing pore pressure affect the porosity of a compressible reservoir?

    <p>Increases porosity</p> Signup and view all the answers

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