Q4) The following table contains the estimated bulk mass densities as a function of depth for an offshore location in Brazil. Water depth is 350m. Measurements indicate that porosity of shale layers estimated through resistivity measurements. Depth (m) Bulk mass density (kg/m3) Shale porosity 1800 2310 0.307 Additional compaction lab measurements on shale cores indicate a good fit of the porosity- effective vertical stress relation through the equation o = Po exp(-B(Sv – Pp)), with parameters po = 0.38 and ß = 3* 10² MPa!. Estimate the pore pressure in the shale? %3D

Fundamentals of Geotechnical Engineering (MindTap Course List)
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ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
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Chapter9: Consolidation
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Q4) The following table contains the estimated bulk mass densities as a function of
depth for an offshore location in Brazil. Water depth is 350m. Measurements indicate
that porosity of shale layers estimated through resistivity measurements.
Depth (m)
Bulk mass density
(kg/m3)
Shale porosity
1800
2310
0.307
Additional compaction lab measurements on shale cores indicate a good fit of the porosity-
effective vertical stress relation through the equation o = 9o exp(-ß(Sv – Pp)), with
parameters po = 0.38 and ß = 3* 10² MPA¬. Estimate the pore pressure in the shale?
%3D
%3D
Transcribed Image Text:Q4) The following table contains the estimated bulk mass densities as a function of depth for an offshore location in Brazil. Water depth is 350m. Measurements indicate that porosity of shale layers estimated through resistivity measurements. Depth (m) Bulk mass density (kg/m3) Shale porosity 1800 2310 0.307 Additional compaction lab measurements on shale cores indicate a good fit of the porosity- effective vertical stress relation through the equation o = 9o exp(-ß(Sv – Pp)), with parameters po = 0.38 and ß = 3* 10² MPA¬. Estimate the pore pressure in the shale? %3D %3D
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