PETE 321 Final Exam Questions & Answers 2024/2025
Effects on sonic transit time - ANSWERS-gas in drilling mud
-large boreholes
-slow formations
-fluid invasion
T/F Wettability of the rock grains does not affect resistivity measurements. - ANSWERSFalse
T/F With an increase in porosity,...
Effects on sonic transit time - ANSWERS-gas in drilling mud
-large boreholes
-slow formations
-fluid invasion
T/F Wettability of the rock grains does not affect resistivity measurements. - ANSWERSFalse
T/F With an increase in porosity, the formation resistivity factor decreases. - ANSWERSTrue
T/F At a fixed porosity, an increase in the tortuosity of pores in rock increases the formation resistivity
factor. - ANSWERSTrue
T/F Archie's model is suitable for rocks with multiple conduction mechanisms. - ANSWERSFalse
T/F Archie's model is suitable for carbonates with isolated and vuggy porosity. - ANSWERSFalse
T/F Indonesian Equation and Waxman-Smits Equation belong to the same family of water- saturation
equation. - ANSWERSFalse
T/F Induction logging tool is suitable for oil-based mud and low-resistivity formations. - ANSWERSTrue
T/F Skin effect correction for resistivity measurements acquired using induction tool is required for
formations with large conductivity. - ANSWERSTrue
T/F Pad-based micro-resistivity logs are used to measure the flushed-zone resistivity. - ANSWERSTrue
, T/F For a specific distance, transit time of compressional wave is higher in water as compared to that in
water-filled sandstone. - ANSWERSTrue
T/F With increase in consolidation of the rock, the transmit time increases. - ANSWERSFalse
T/F Presence of gas affects compressional wave more than shear wave. - ANSWERSTrue
T/F Unlike sandstone, shales exhibit large variations in compressional-wave transit time. - ANSWERSTrue
T/F Stoneley wave traveltime can be used to estimate formation permeability. - ANSWERSTrue
T/F With increase in spacing of sonic logging tool sensors, the depth of investigation increases. -
ANSWERSTrue
T/F Wyllie's Time-Average Equation is suitable for rocks with heterogeneously distributed large pores. -
ANSWERSFalse
T/F Rubber has higher Young's modulus as compared to ceramics. - ANSWERSfalse
T/F Rocks that are not suitable for hydraulic fracturing tend to have lower Young's modulus and higher
Poisson's ratio. - ANSWERSTrue
T/F At a fixed porosity and assuming other properties to remain unchanged, an increase in the
consolidation and cementation of rock increases the formation resistivity factor. - ANSWERStrue
T/F Density logging tool has deeper depth of investigation than sonic logging tool. - ANSWERSTrue
T/F For any specific material, shear wave travels faster than compressional wave. - ANSWERSFalse
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