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doi:10.2204/iodp.proc.314315316.205.2011

Conclusions

Permeability measurements were performed on samples from Sites C0001 and C0006 in a triaxial cell under effective hydrostatic confining pressure ranging from 1 to 30 MPa. The pulse decay method was employed and showed an exponential trend of the differential pore pressure with time, allowing the calculation of well-constrained permeability data. A decrease of the initial permeability at 1 MPa effective pressure from 4.6 × 10^–18 to 1.8 × 10^–19 m² with increasing depth was observed at both sites and is well correlated with the porosity trend. When the effective confining pressure is increased from 1 to 30 MPa, the permeability decreases for all samples. However this trend shows some variability, indicating a finer microstructural control depending on the lithological origin of the sample.

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