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Problem 2 The following table contains the estimated bulk mass densities as a function of depth for an offshore location in Brazil. Water depth is 500m. Measurements indicate that porosity of shale layers estimated through resistivity measurements.

Problem 2 The following table contains the estimated bulk mass densities as a function of depth for an offshore location in Brazil. Water depth is 500m. Measurements indicate that porosity of shale layers estimated through resistivity measurements.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Problem 2 The following table contains the estimated bulk mass densities as a function of depth for an offshore location in Brazil. Water depth is 500m. Measurements indicate that porosity of shale layers estimated through resistivity measurements. Depth (m) Bulk mass density (kg/m:) Shale porosity 1025 100 1026 200 1026 300 1030 400 1030 500 1031 600 1900 700 2190 800 2200 900 2230 1000 2235 1100 2240 1200 2275 0.305 1300 2305 0.297 1400 2310 0.286 1500 2308 0.281 1600 2310 0.285 1700 2305 0.293 1800 2310 0.307 1900 2324 0.305 2000 2319 0.298 a. Plot S, as a function of depth (in SI units) b. Plot hydrostatic water pressure as a function of depth. Assume the density of brine water is 1031 kg/m3 in the rock pore space (in SI units). c. Plot vertical effective strees, o eff as a function of depth (in SI units).
Transcribed Image Text:Problem 2 The following table contains the estimated bulk mass densities as a function of depth for an offshore location in Brazil. Water depth is 500m. Measurements indicate that porosity of shale layers estimated through resistivity measurements. Depth (m) Bulk mass density (kg/m:) Shale porosity 1025 100 1026 200 1026 300 1030 400 1030 500 1031 600 1900 700 2190 800 2200 900 2230 1000 2235 1100 2240 1200 2275 0.305 1300 2305 0.297 1400 2310 0.286 1500 2308 0.281 1600 2310 0.285 1700 2305 0.293 1800 2310 0.307 1900 2324 0.305 2000 2319 0.298 a. Plot S, as a function of depth (in SI units) b. Plot hydrostatic water pressure as a function of depth. Assume the density of brine water is 1031 kg/m3 in the rock pore space (in SI units). c. Plot vertical effective strees, o eff as a function of depth (in SI units).
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