Table 2. Leg 198 - Shatsky Rise
Alternate Operations Plan and Time Estimate
Water | Total | |||||||
Site | Location | Depth | Operations Description | Transit | Drilling | Logging | On-site | |
(Lat/Long) | (mbrf) | (mbsf) | (hr) | (days) | (days) | (days) | (days) | |
Yokohama | 35.5° N, 139.7° E | Transit 1116 nmi f/Yokohama to SHAT-5C @ 10.5 kt | 106.25 | 4.4 | ||||
SHAT-5C | 37°47.729'N | 3123 | Hole A: APC to refusal (~200 m), XCB to ~555 mbsf | 110.00 | 4.6 | |||
162°45.053'E | Hole B: APC to ~200 mbsf, XCB/MDCB to ~555 mbsf | 160.25 | 6.7 | |||||
Note: Core 155 m with MDCB (4.5 m cores) | ||||||||
Wireline log: triple combo/FMS-sonic/GHMT | 28.00 | 1.2 | 12.5 | |||||
Transit 166 nmi from SHAT-5C to SHAT-11 @ 10.5 kt | 15.75 | 0.7 | ||||||
SHAT-11 | 36°27.601'N | 4818 | Hole A: APC to refusal (~180 mbsf) | 40.00 | 1.6 | |||
(alternate) | 160°16.955'E | Hole B: APC to ~180 mbsf | 37.25 | 1.6 | 3.2 | |||
Transit 95 nmi from SHAT-11 to SHAT-4 @ 10.5 kt | 9.00 | 0.4 | ||||||
SHAT-4 | 36°7.629'N | 3318 | Hole A: APC to refusal (~200 mbsf) | 35.00 | 1.5 | |||
158°12.094'E | Hole B: APC to ~200 mbsf | 32.25 | 1.3 | 2.8 | ||||
Transit 66 nmi from SHAT-4 to SHAT-7 @ 10.5 kt | 6.25 | 0.3 | ||||||
SHAT-7 | 37°9.900'N | 4143 | Hole A: APC to refusal (~175 mbsf) | 37.25 | 1.6 | |||
(alternate) | 158°40.529'E | Hole B: APC to ~175 mbsf | 34.50 | 1.4 | 3.0 | |||
Transit 271 nmi from SHAT-7 to SHAT-1 @ 10.5 kt | 25.75 | 1.1 | ||||||
SHAT-1 | 32°39.099'N | 2418 | Hole A: APC to refusal (~200 mbsf), XCB to 300 mbsf | 44.50 | 1.9 | |||
(modified) | 158°30.357'E | Hole B: APC to ~200 mbsf, XCB to 300 mbsf | 47.25 | 2.0 | ||||
Wireline log: triple combo/FMS-sonic/GHMT | 26.50 | 1.1 | 5.0 | |||||
Transit 32 nmi from SHAT-1 to SHAT-2B @ 10.5 kt | 3.00 | 0.1 | ||||||
SHAT-2B | 32°6.865'N | 2782 | Hole A: APC to refusal (~200 mbsf), XCB to ~240 mbsf | 39.00 | 1.7 | |||
(modified) | 158°3.030'E | Hole B: APC to ~200 mbsf, XCB to ~240 mbsf | 41.75 | 1.7 | ||||
Wireline log: triple combo/FMS-sonic/GHMT | 26.50 | 1.1 | 4.5 | |||||
Transit 52 nmi from SHAT-2B to SHAT-3 @ 10.5 kt | 5.00 | 0.2 | ||||||
SHAT-3 | 31°34.641'N | 3881 | Hole A: APC to refusal (~70 mbsf) | 20.25 | 0.8 | |||
(modified) | 157°17.862'E | Hole B: APC to ~70 mbsf, NDT inspect BHA | 21.50 | 0.9 | 1.7 | |||
Transit 9 nmi from SHAT-3 to SHAT-14 @ 10.5 kt | 1.00 | 0.1 | ||||||
SHAT-14 | 31°25.51'N | 4340 | Hole A: RCB to 100 mbsf (50 m into basement) | 37.0 | 1.5 | |||
(alternate) | 157°15.43'E | Lay out BHA/DC/secure for transit to port | 1.5 | |||||
Honolulu | 21°30'N, 158°W | Transit 2485 nmi f/SHAT-14 to Honolulu @ 10.5 kt | 236.50 | 9.9 | ||||
SUBTOTAL: | 17.2 | 31.9 | 2.3 | 34.2 | ||||
TOTAL OPERATING DAYS (w/ 5 day port call): | 56.4 |