Quiz 4 solution - Triaxial: different amounts of load in...

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Quiz 4 PGE 424 20 minutes Name: 1. What is “Spontaneous Potential”? Electrochemical potential (aka diffusion potential) between connate water and drilling mud water 2. What does the depth of investigation of an electrical log depend on? The distance between the two electrodes (and conductivity of the rock) 3. State Hooke’s law. F/A = -E L/L 4. What is Poisson ratio? ν = -( w/w) / ( L/L) 5. What is the difference between uniaxial and triaxial testing? Uniaxial: load is applied only on one direction, no load in other directions
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Unformatted text preview: Triaxial: different amounts of load in different directions 6. What do we get from sonic log? Porosity if filled with liquid 7. What are gamma rays? Electromagnetic waves of short wave length (and no mass) 8. What are positrons? Particles of mass equal to an electron, +e charge. Emitted when a proton decays to a neutron. 9. What does the Geol. Spectrometry tool measure? Mineralogy from the energy of gamma rays released 10. What is the main use of neutron log? Porosity...
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Quiz 4 solution - Triaxial: different amounts of load in...

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