Table 1. Operations plan and time estimate for Leg 205 primary sites.
| Site No. |
Location Lat./Long. |
Water Depth |
Operations Description | Transit (days) |
On-Site (days) |
| San Diego | 32° 27' N | Transit 2336 nmi San Diego to Site 1039R-A | 8.8 | ||
| 117° 6' W | |||||
| 1039R-A Basement |
9° 38.9' N | 4375 | Set reentry cone w/ 60 m 16" casing | 19.2 | |
| 86° 11.4' W | m | Drill 60 - 370 mbsf, RCB core 370 - 620 mbsf (100 m basement) | |||
| Log: Triple Combo, FMS-Sonic, 370 - 620 mbsf | |||||
| Open hole to 14-3/4" 60 - 535 mbsf for 10-3/4" casing | |||||
| Set 10-3/4" casing to 530 mbsf | |||||
| Drill out casing shoe, clean rat hole to 620 mbsf | |||||
| Set Osmo screen @ 550 mbsf on 4-1/2" csg w/ pkr @ 540 mbsf | |||||
| Deploy OsmoSampler(s) on wireline | |||||
| Deploy ROV / Submersible platform | |||||
| Transit | Transit 1.1 nmi Site 1039R-A to Site 1040R-B | 0.1 | |||
| 1040R-B Decollement |
9° 39.7' N | 4125 | Set reentry cone w/ 60 m 16" casing | 9.4 | |
| 86° 10.7' W | m | Drill 60 - 300 mbsf, RCB core 300 - 365 mbsf | |||
| Open hole to 14-3/4" 60 - 337 mbsf for 10-3/4" casing | |||||
| Set 10-3/4" casing to 332 mbsf | |||||
| Drill out casing shoe, clean rat hole to 365 mbsf | |||||
| Set Osmo screen @ 357 mbsf on 4-1/2" csg w/ pkr @ 347 mbsf | |||||
| Deploy OsmoSampler on wireline | |||||
| Deploy ROV / Submersible platform | |||||
| Transit | Transit 0.3 nmi Site 1040R-B to Site 1040R-C | 0.1 | |||
| 1040R-C Decollement |
9° 39.5' N | 4250 | Set reentry cone w/ 60 m 16" casing | 8.8 | |
| 86° 10.9' W | m | Drill 60 - 220 mbsf, RCB core 220 - 279 mbsf | |||
| Open hole to 14-3/4" 60 - 255 mbsf for 10-3/4" casing | |||||
| Set 10-3/4" casing to 250 mbsf | |||||
| Drill out casing shoe, clean rat hole to 279 mbsf | |||||
| Set Osmo screen @ 270 mbsf on 4-1/2" csg w/ pkr @ 260 mbsf | |||||
| Deploy OsmoSampler on wireline | |||||
| Deploy ROV / Submersible platform | |||||
| Transit | Transit 0.4 nmi Site 1040R-C to Site 1040R-A | 0.1 | |||
| 1040R-A Under Thrust |
9° 39.8' N | 4100 | Set reentry cone w/ 60 m 16" casing | 7.4 | |
| 86° 10.7' W | m | Drill 14-3/4" 60 - 385 mbsf for 10-3/4" casing | |||
| Set 10-3/4" casing to 380 mbsf | |||||
| Drill out casing shoe, drill 9-7/8" 385 to 410 mbsf | |||||
| Set Osmo screen @ 400 mbsf on 4-1/2" csg w/ pkr @ 390 mbsf | |||||
| Deploy OsmoSampler on wireline | |||||
| Deploy ROV / Submersible platform | |||||
| Secure for sea voyage | |||||
| Balboa | 8° 34.2' N | Transit 510 nmi Site 1040R-A to Balboa, Panama | 1.9 | ||
| 79° 19.8' W | |||||
| Primary Site Transit and On-Site Time Sub Totals: | 11.2 | 44.8 | |||
| LEG 205 PRIMARY SITE OPERATIONAL DAYS TOTAL: | 56.0 | ||||