Permeability, overburden stress and friction coefficients of ODP Hole 190-1173A and 190-1174B
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2004
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| _version_ | 1867170462372462592 |
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| author | Bourlange, Sylvain Jouniaux, Laurence Henry, Pierre |
| author_facet | Bourlange, Sylvain Jouniaux, Laurence Henry, Pierre |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Permeability measured on three samples in a triaxial cell under effective confining pressure from 0.2 to 2.5 MPa ranges from 10**-18 to 10**-19 m**2. Overall, results indicate that permeability decreases with effective confining pressure up to 1.5 MPa; however, measurements at low effective pressure are too dispersed to yield a precise general relationship between permeability and pressure. When the effective pressure is increased from 1.5 to 2.5 MPa, permeability is roughly constant (~1-4 x 10**-19 m**2). Samples deformed in the triaxial cell developed slickenlined fractures, and permeability measurements were performed before and after failure. A permeability increase is observed when the sample fails under low effective confining pressure (0.2 MPa), but not under effective pressure corresponding to the overburden stress. Under isotropic stress conditions, permeability decrease related to fracture closure occurs at a relatively high effective pressure of ~1.5 MPa. Coefficients of friction on the fractures formed in the triaxial cell are ~0.4. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_779765 |
| institution | PANGAEA |
| language | en |
| publishDate | 2004 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Permeability, overburden stress and friction coefficients of ODP Hole 190-1173A and 190-1174B Bourlange, Sylvain Jouniaux, Laurence Henry, Pierre 190-1173A; 190-1174B; DRILL; Drilling/drill rig; Joides Resolution; Leg190; Ocean Drilling Program; ODP; Philippine Sea Permeability measured on three samples in a triaxial cell under effective confining pressure from 0.2 to 2.5 MPa ranges from 10**-18 to 10**-19 m**2. Overall, results indicate that permeability decreases with effective confining pressure up to 1.5 MPa; however, measurements at low effective pressure are too dispersed to yield a precise general relationship between permeability and pressure. When the effective pressure is increased from 1.5 to 2.5 MPa, permeability is roughly constant (~1-4 x 10**-19 m**2). Samples deformed in the triaxial cell developed slickenlined fractures, and permeability measurements were performed before and after failure. A permeability increase is observed when the sample fails under low effective confining pressure (0.2 MPa), but not under effective pressure corresponding to the overburden stress. Under isotropic stress conditions, permeability decrease related to fracture closure occurs at a relatively high effective pressure of ~1.5 MPa. Coefficients of friction on the fractures formed in the triaxial cell are ~0.4. |
| title | Permeability, overburden stress and friction coefficients of ODP Hole 190-1173A and 190-1174B |
| topic | 190-1173A; 190-1174B; DRILL; Drilling/drill rig; Joides Resolution; Leg190; Ocean Drilling Program; ODP; Philippine Sea |
| url | https://doi.org/10.1594/PANGAEA.779765 |