Table T1. Summary of operations for Pacific equatorial Expedition 320.
|
Site |
Location (latitude, longitude) |
Seafloor depth (mbrf) |
Operations description |
Duration (days) |
|||
|---|---|---|---|---|---|---|---|
| Task | Transit | Drilling/Coring | Logging | ||||
|
Wellington, New Zealand |
|
|
|
|
|
||
|
|
Transit ~2621 nmi to Papeete at 10.5 kt |
|
10.4 |
|
|||
|
Papeete, Tahiti |
|
|
|
|
|||
|
|
Transit ~1972 nmi from Papeete to Site PEAT-5C at 10.5 kt |
|
7.8 |
|
|||
|
PEAT-5C EPSP approved to 300 mbsf |
07°42.075′N, 128°15.254′W |
4322
|
Hole A: APC ~70 m/XCB to ~254 mbsf - 3 APCT-3 and 2 DVTP temperature measurements - Wireline logging with triple combo and FMS-sonic |
|
|
2.6 |
0.9 |
| Hole B: APC ~70 m/XCB to ~254 mbsf |
|
|
2.4 |
|
|||
|
Subtotal days on site: |
5.9 | ||||||
|
|
Transit ~222 nmi to Site PEAT-4C at 10.5 kt |
|
0.9 |
|
|||
|
PEAT-4C EPSP approved to 300 mbsf |
07°59.999′N, 131°58.396′W |
4820
|
Hole A: APC ~70 m/XCB to ~269 mbsf (~1 m into basement) - 3 APCT-3 and 2 DVTP temperature measurements - Wireline logging with triple combo and FMS-sonic |
|
|
3.1 |
1.0 |
| Hole B: APC ~70 m/XCB to ~268 mbsf |
|
|
2.4 |
|
|||
| Hole C: APC ~70 m/XCB to ~268 mbsf |
|
|
2.8 |
|
|||
|
Subtotal days on site: |
9.2 | ||||||
| Transit ~411 nmi to Site PEAT-3C at 10.5 kt |
|
1.6 |
|
||||
|
PEAT-3C EPSP approved to 250 mbsf |
10°30.997′N, 138°25.175′W |
4885
|
Hole A: APC ~70 m/XCB to ~175 mbsf (~1 m into basement) - 3 APCT-3 and 2 DVTP temperature measurements - Wireline logging with triple combo and FMS-sonic |
|
|
2.2 |
1.0 |
| Hole B: APC ~70 m/XCB to ~174 mbsf |
|
|
1.6 |
|
|||
| Hole C: APC ~70 m/XCB to ~174 mbsf |
|
|
2.1 |
|
|||
|
Subtotal days on site: |
6.8 | ||||||
|
|
Transit ~239 nmi to Site PEAT-1C at 10.5 kt |
|
1.0 |
|
|||
|
PEAT-1C EPSP approved to 250 mbsf |
12°04.089′N, 142°09.698′W |
5143 |
Hole A: APC ~70 m/XCB to ~188 mbsf (~1 m into basement) - 1st site includes PU drill collars/BHA and "strapping" tubulars - 3 APCT-3 and 2 DVTP temperature measurements - Wireline logging with triple combo and FMS-sonic |
|
|
3.0 |
0.9 |
| Hole B: APC ~70 m/XCB to ~187 mbsf |
|
|
1.7 |
|
|||
|
Hole C: APC ~70 m/XCB to ~187 mbsf - LO drill collars/BHA and secure for transit to port |
|
|
2.5 |
|
|||
|
Subtotal days on site: |
8.1 | ||||||
|
|
Transit ~1068 nmi to Honolulu, Hawaii, at 10.5 kt |
|
4.2 |
|
|||
|
Honolulu, Hawaii |
|
|
25.9 |
26.3 |
3.8 | ||
|
Subtotal time on site: |
30.1 | ||||||
|
Total operating days: |
56.0 | ||||||
|
Total expedition (including 5 port call days): |
61.0 | ||||||
Notes: Seafloor depth = prospectus water depth plus 11.0 m adjustment from water line to rig floor (i.e., drillers depth). APC = advanced piston corer, XCB = extended core barrel, PU = picking up, BHA = bottom-hole assembly, APCT-3 = advanced piston corer temperature-3 tool, DVTP = Davis-Villinger Temperature Probe, triple combo = triple combination, FMS-sonic = Formation MicroScanner-sonic tool string, LO = laying out.