Table T2. Breakdown of operational time while on site during Expedition 302 (ACEX).
|
Date (2004) |
Time (h) | Comments | ||||||
|---|---|---|---|---|---|---|---|---|
| T | P | D | W | B | TR | Total | ||
| 15 Aug | 8.50 | 2.50 | 2.00 | 13 | Chicksan valve broken | |||
| 16 Aug | 6.00 | 5.00 | 13.00 | 24 | Extended core barrel lost | |||
| 17 Aug | 24.00 | 24 | BHA lost; chicksan valve broken | |||||
| 18 Aug | 13.00 | 11.00 | 24 | Repair of chicksan valve | ||||
| 19 Aug | 9.58 | 14.42 | 24 | |||||
| 20 Aug | 22.83 | 1.17 | 24 | |||||
| 21 Aug | 15.83 | 8.17 | 24 | |||||
| 22 Aug | 24.00 | 24 | ||||||
| 23 Aug | 10.00 | 14.00 | 24 | |||||
| 24 Aug | 9.50 | 1.00 | 10.00 | 3.50 | 24 | |||
| 25 Aug | 10.67 | 1.00 | 1.00 | 11.33 | 24 | Iron roughneck failed; reflective seismics (D) | ||
| 26 Aug | 3.50 | 4.25 | 16.25 | 24 | Wireline termination failed | |||
| 27 Aug | 13.50 | 1.50 | 1.75 | 7.25 | 24 | Chicksan valve broken third time | ||
| 28 Aug | 21.33 | 2.67 | 24 | APC stuck | ||||
| 29 Aug | 24.00 | 24 | ||||||
| 30 Aug | 24.00 | 24 | ||||||
| 31 Aug | 24.00 | 24 | ||||||
| 1 Sept | 4.75 | 5.42 | 11.67 | 1.00 | 1.17 | 24 | ||
| 2 Sept | 1.83 | 2.92 | 19.25 | 24 | Logging failed, plugged bit | |||
| 3 Sept | 23.08 | 0.92 | 24 | |||||
| 4 Sept | 5.50 | 12.67 | 5.83 | 24 | Equipment frozen | |||
| 5 Sept | 8.33 | 8.75 | 6.92 | 24 | APC stuck in BHA | |||
| 6 Sept | 5.00 | 6.50 | 8.00 | 4.50 | 24 | Maintenance of ships; reflective seismics (D) | ||
| Totals: | 68.1 | 18.9 | 247.9 | 53.3 | 137.6 | 15.3 | 541 | |
| Percent: | 12.6 | 3.5 | 45.8 | 9.8 | 25.4 | 2.8 | ||
Notes: T = trip time, P = preparation time on rig floor, D = drill time, W = wait for better ice conditions, B = breakdown time, TR = transit time. BHA = bottom-hole assembly, APC = advanced piston corer. Approval was given to start running pipe on Site M0001 at 1100 h on 15 August.
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