Hourly activities:
00:00 - 00:15: Continued cleaning and clearing drill floor
00:15 - 00:30: Performed TBT for milling 10 3/4" casing hanger meanwhile performed drops inspection on TDS
00:30 - 02:15: P/u and m/u 12 1/4" CH milling BHA.
02:15 - 02:30: RIH w/ 12 1/4" CH milling BHA on 5 1/2" DP from 71 m to 138 m.
02:30 - 03:00: M/u TDS and filled pipe. Recorded parameters up/down weight 82/78 ton, 80 RPM 2-6 KNM, 2000 LPM 11 bar.
03:00 - 03:15: Tagged 10 3/4" CH with CH mill at 141,26 m w/ 4 ton. Marked pipe.
03:15 - 05:45: Milled 10 3/4" casing hanger from 141,26m to 141,55m, 1500-2000 LPM 12-15 bar, 80-100 RPM 9-12 KNM, wob 1-6 ton. Got good indications that casing parted from CH. Torque decreased to 2 to 6 KNM after milling 29cm, observed small gas peak of 1 and 1 ppm h2s in gas trap. Pulled up 1 m with flow and rotation, no restrictions. Stopped rotation and slided down through CH area, no restriction.
05:45 - 06:45: Continued sliding down and tagged top of 10 3/4" casing at 142,66 m. Dressed off 10 cm of top of casing, 2000 LPM 15 bar, 80-100 RPM 7-9 KNM, wob 3-8 ton.
06:45 - 07:00: Pulled up and placed taper mill above CH. Circulated 2 x b/u, 3000 LPM 20 bar.
07:00 - 07:15: Flowchecked well for 10 min, static. Meanwhile performed TBT for drops inspection.
07:15 - 08:00: Performed drops inspection on TDS, moonpool, derrick and drill floor. No findings.
08:00 - 08:15: Performed TBT for manual handling
08:15 - 08:30: POOH w/ 10 3/4" CH milling BHA on 5 1/2" DP from 142 m to 108 m.
08:30 - 08:45: Cleaned and cleared drill floor. L/o cutter BHA, which was previously left on drill floor due to wind restriction on crane.
08:45 - 09:00: Continued POOH w/ 10 3/4" milling BHA on 5 1/2" DP from 108 m to 70 m. Over-torqued connections due to vibrations during milling.
09:00 - 10:00: Continued POOH w/ 10 3/4" milling BHA on 5 1/2" DP from 70 m to surface.
10:00 - 10:30: Cleaned string magnet, 22kg swarf. L/d 10 3/4" milling BHA.
10:30 - 10:45: Performed TOFS. Cleaned and cleared walkways and escape routes on drill floor. Meanwhile function tested BSR.
10:45 - 11:15: P/u 10 3/4" spear BHA. Inspected and serviced grapple. Set spear in catch mode.
11:15 - 12:00: RIH w/ 10 3/4" spear on 5 1/2" DP from surface to 148 m. Pulled up and verified spear engaged in 10 3/4" casing, 88 ton on weight indicator.
12:00 - 12:30: POOH with 10 3/4" casing on 5 1/2" DP from 316 m to 205 m.
12:30 - 12:45: Flowchecked well for 10 min, static. Meanwhile performed TBT for releasing spear at surface.
12:45 - 13:00: POOH to 191 m and l/d 1 single 5 1/2" DP.
13:00 - 13:45: R/u handling equipment for 10 3/4" casing
13:45 - 14:15: POOH to 175m. Set slips on casing. Disengaged spear. R/b spear BHA.
14:15 - 14:30: B/o 10 3/4" casing pup and l/o same.
14:30 - 15:15: Changed to casing elevator dressed for 10 3/4".
15:15 - 17:45: POOH with 10 3/4" casing from 175 m surface. Average pulling speed 6,2 joints/hr. Used manual slips and dog collar. L/o cut casing joint.
17:45 - 18:00: Cleaned and cleared drill floor
18:00 - 19:00: R/d handling equipment for 10 3/4" casing. Changed to elevator for 5 1/2" DP handling.
19:00 - 19:15: Performed TBT for running 13 3/8" EZSV plug
19:15 - 20:00: P/u and m/u 13 3/8" EZSV RT and plug. Installed springs on tool.
20:00 - 20:45: RIH w/ 13 3/8" EZSV plug on 5 1/2" DP from surface to 303 m. Avg. Tripping speed 450 m/hr.
20:45 - 21:15: Recorded up/down weight, 77/73 ton. Established circulation and washed the setting area, 800lpm/ 4 bar. Installed the 13 3/8" EZSV plug at 303 m. Load tested the plug with 10 ton.
21:15 - 22:15: Pumped 10m3 wash pill and 10 m3 push pill followed by SW while rotating string 50 RPM. Circulated until clean SW in returns, 2500 LPM 16 bar.
22:15 - 22:30: Performed TBT for cement job
22:30 - 23:00: B/o double 5 1/2" DP. M/u pump-in sub to string. M/u TDS. Spaced out 3m above EZSV plug.
23:00 - 23:15: Installed cement hose. Leak tested cement line to 100 bar for 2 min.
23:15 - 00:00: Pumped 10m3 drill water with rig pumps, 2500 LPM 14 bar. Mixed and pumped 7,8 m3 1,93 SG cement slurry, 600 LPM 16 bar. Displaced cement with 2 m3 drill water, 600lpm 14 bar, using cement unit.

24-hour summary: milled 10 3/4" casing hanger id to 12 1/4" pulled 10 3/4" casing installed 13 3/8" EZSV plug at 303m displaced well to clean SW placed balanced cement plug in 13 3/8" casing cleaned BOP started to n/d diverter and BOP