Core
|
Deployment
number |
Date
(Aug 2002) |
Local time
(hr)
|
Depth
|
BSR
(mbsf) |
Lithology
|
Core recovered
(cm) |
Presssure bar
(bar) |
Comments
|
|
---|---|---|---|---|---|---|---|---|---|---|
Water (mbsl)
|
Core
(mbsf) |
|||||||||
204-1249D- |
|
|
|
|
|
|
|
|
|
|
2Y | FPC 5 | 5 | 0305 | 777 | 8 | 115 | Massive hydrate and soft clays near seabed | 80(bagged) | Pressure lost then rose to 20 kbar | Cut good core; could not transfer because of gas expansion; mousse put in bag; hydrate visible |
204-1249F- |
|
|
|
|
|
|
|
|
|
|
2E | HRC 4 | 5 | 1130 | 777 | 8 | 115 | Massive hydrate and soft clays near seabed | 88 | Full 80 kbar, then rose briefly to over 250 kbar during disassembly | Hydrate core; 101 liters of gas collected |
13Y | FPC 6 | 6 | 0230 | 777 | 70 | 115 | Unconsolidated silty clay | 91 | 0 | Cut good core, full retraction lower valve did not seal |
204-1249G- |
|
|
|
|
|
|
|
|
|
|
2E | HRC 7 | 28 | 0230 | 777 | 13.5 | 115 | Massive hydrate and soft clays near seabed | 75 | 80 | Good core; much hydrate; lost 25 cm from catcher; tilted, frozen, and transferred to line 2 |
204-1249H- |
|
|
|
|
|
|
|
|
|
|
2Y | FPC 10 | 28 | 1000 | 777 | 13.5 | 115 | Massive hydrate and soft clays near seabed | 75 | 80 | Hydrate core with free gas |
204-1249L- |
|
|
|
|
|
|
|
|
|
|
5E | HRC 8 | 29 | 1925 | 777 | 37.5 | 115 | Soft clays and hydrate | 30 | 30 kbar pumped to 90 kbar | Lost pressure briefly on disassembly |
Note: BSR = bottom-simulating reflector, FPC = Fugro Pressure Corer, HRC = HYACE Rotary Corer.