Abstract
Continuous drill cores from the Caribbean Sea of up to 1 km thick
mixed sediments and carbonates were recovered by Ocean Drilling
Program Leg 165. The sediments range in porosity from 10% to 80%
and in carbonate content from 20% to 95%. Unconfined P-wave
velocities from this material were measured by ODP on freshly
retrieved water saturated material, and these are compared to
similar data from ODP Leg 130 (Ontong Java Plateau) where more
than 95% pure carbonates were recovered. To fit low porosity as
well as high porosity data, Wyllies equation can be modified by
replacing the porosity by the ratio between porosity and critical
porosity. Irrespective of clay content the same modified Wyllie
type linear relationship was found between the P-wave travel time
and porosity. For samples from the Caribbean a critical porosity
of 73% was found. A critical porosity of 68% was found for samples
fromthe Ontong Java Plateau.
Original language | English |
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Title of host publication | 3rd Nordic Symposium on Petrophysics |
Editors | Mike F. Middleton |
Place of Publication | Ås |
Publisher | Nordic Energi Forskningsprogram |
Publication date | 1997 |
Pages | 123-137 |
ISBN (Print) | 82-994330-2-9 |
Publication status | Published - 1997 |
Event | 3rd Nordic Symposium on Petrophysics - Göteborg, Sweden Duration: 23 Jan 1997 → 24 Jan 1997 Conference number: 3 |
Conference
Conference | 3rd Nordic Symposium on Petrophysics |
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Number | 3 |
Country/Territory | Sweden |
City | Göteborg |
Period | 23/01/1997 → 24/01/1997 |
Series | Nordic Petroleum Technology Series |
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Volume | 3 |