Hourly activities:
00:00 - 00:05: P/u 10 3/4" spear BHA from set-back.
00:05 - 00:15: RIH w/ 10 3/4" spear BHA on 5 1/2" DP from surface to 25 m. Engaged spear in tie-back casing.
00:15 - 00:30: POOH w/ spear and tie-back casing on 5 1/2" DP from 25 m surface.
00:30 - 01:00: Installed bushings in rotary. Released spear at surface and r/b same.
01:00 - 01:15: Performed TBT for pulling 10 3/4" surface tie-back.
01:15 - 02:30: R/u casing tong. Changed to BX-3 elevator. Changed PDM head to handle 10 3/4".
02:30 - 04:00: POOH with 10 3/4" tie-back casing. Avg pulling speed 6,5 jnt/hr. Used manual slips and dog collar.
04:00 - 04:15: L/d cut casing joint to HTS.
04:15 - 05:15: R/d handling equipment.
05:15 - 05:30: Performed TBT for releasing tie-back adapter.
05:30 - 05:45: M/u torque tool BHA
05:45 - 06:15: RIH with 3 singles LH thread 5 1/2" DP
06:15 - 07:00: Changed to LH thread saver sub
07:00 - 07:15: Performed TBT with ongoing crew
07:15 - 07:45: Continued changing to LH thread saver sub, m/u to 95 KNM.
07:45 - 08:30: P/u and inspected torque tool. RIH w/ torque tool BHA on 5 1/2" LH thread DP to 139,8 m.
08:30 - 09:00: Latched dogs in tie-back adapter. Released tie-back connector by rotating left, 10 KNM.
09:00 - 09:45: POOH w/ torque tool BHA on 5 1/2" LH thread DP from 139,8 m surface. Set BHA in slips.
09:45 - 10:30: Changed from left threaded saver sub to normal saver sub.
10:30 - 10:45: L/d torque tool BHA
10:45 - 11:00: P/u and m/u 10 3/4" spear BHA. Inspected tools.
11:00 - 11:30: RIH with 10 3/4" spear BHA on 5 1/2" DP to 127m. Engaged spear.
11:30 - 12:00: POOH w/ spear BHA and tie-back adatper on 5 1/2" DP from 127 m to surface.
12:00 - 12:15: Performed TBT for handling fish at surface
12:15 - 12:30: L/o tie-back adapter and remaining casing. R/b spear BHA.
12:30 - 12:45: Performed TBT for handling guns
12:45 - 13:00: Changed BX elevator inserts and IRN dies. Installed barriers for handling explosives.
13:00 - 14:30: P/u and m/u 10 3/4" perforation guns
14:30 - 15:00: RIH w/ 10 3/4" guns on 5 1/2" DP to 148 m.
15:00 - 16:00: M/u TDS, confirmed line up and filled string. B/o TDS and dropped ball. M/u TDS. Spaced out to 147,5 m. Closed MPR and opened choke. Pressured up string to 140 bar with rig pumps, 150 LPM. Fired guns, pressure dropped to 5 bar, good indications.
16:00 - 16:45: Circulated 1000lpm 11 bar, took returns through choke and poor boy. Observed MAX 1 ppm h2s in gas trap, no gas.
16:45 - 17:00: Flowchecked well for 5 min over choke, static. Flowchecked well for 10 min on TT, static.
17:00 - 17:15: POOH w/ 10 3/4" guns on 5 1/2" DP from 147,5 m to 17 m.
17:15 - 17:30: P/u and inspected guns, all shots fired. Meanwhile performed TBT for handling guns.
17:30 - 18:30: L/d perforation guns.
18:30 - 18:45: Cleaned and cleared drill floor
18:45 - 19:00: P/u 10 3/4" cutter BHA. Inspected tools.
19:00 - 19:30: RIH w/ 10 3/4" cutter BHA on 5 1/2" DP from 7 m to 319 m depth) 317 m depth).
19:30 - 20:15: M/u TDS and filled pipe. Recorded parameters 200 LPM 8 bar, 300 LPM 21 bar, 400 LPM 38 bar, 500 LPM 72 bar, 600 LPM 102 bar. Up/down weight 79/75 ton. 80 RPM 2 to 6 KNM.
20:15 - 21:00: Attempted to cut 10 3/4" casing at 317 m, 500 LPM 64 bar, 80 RPM 4 to 11 KNM. Knock in string observed and torque decreased. No pressure drop observed. Pulled up 1 m above cut, no change in SPP observed. Ran in 0,5m below cut, no change in SPP observed and no tag of cut.
21:00 - 22:30: Re-cut 10 3/4" casing at 316 m, 500 LPM 64 bar, 80 RPM 4 to 11 KNM. Observed decreasing torque trend, no pressure drop observed. Cut until torque fell back to free rotational torque.
22:30 - 22:45: Performed 10 min flowcheck, static.
22:45 - 23:30: POOH w/ 10 3/4" cutter BHA on 5 1/2" DP from 318 m to surface.
23:30 - 23:45: L/d cutter BHA on drill floor due to too much wind for crane operations.
23:45 - 00:00: Cleaned and cleared drill floor

24-hour summary: pulled tie-back casing released tie-back adapter retrieved tie-back adatper perforated below 10 3/4" CH cut 10 3/4" casing at 317m milled 10 3/4" casing hanger id to 12 1/4"