Hourly activities:
00:00 - 00:30: Removed master bushing and installed ps21 slips.
00:30 - 01:45: RIH with 8 1/2" clean-out assy on 5 1/2" DP from 168 to 980 m. Noticed incorrect return volume.
01:45 - 02:00: When filling pipe it was concluded that float didn't work. Established circulation and attempted to close float with 980 LPM.
02:00 - 02:15: Continued RIH with 8 1/2" clean-out assy on 5 1/2" DP from 980 to 1124 m.
02:15 - 02:45: Checked string. Float not working. Established circulation and attempted to close float with 2500 LPM. RIH one stand and checked float. Still not working.
02:45 - 04:15: Continued RIH with 8 1/2" clean-out assy on 5 1/2" DP from 1165 to 2030 m.
04:15 - 04:30: Broke circulation with 1240 LPM/48 bar to verify unplugged string.
04:30 - 05:00: Continued RIH with 8 1/2" clean-out assy on 5 1/2" DP from 2030 to 2188 m.
05:00 - 05:15: Performed kick drill. Stabbed FOSV and closed same in 55 sec.
05:15 - 05:30: Continued RIH with 8 1/2" clean-out assy on 5 1/2" DP from 2188 to 2309 m. Pipe slipped out in derrick.
05:30 - 06:00: Stopped and performed TBT and SJA before recovering pipe from derrick. Prepared equipment.
06:00 - 07:00: Held TBT and SJA. Prepared equipment.
07:00 - 09:00: Recovered dropped pipe stand from derrick. Inspected all contact areas.
09:00 - 10:00: Continued RIH with 8 1/2" clean-out assy on 5 1/2" DP from 2309 to 2712 m.
10:00 - 10:15: M/u TDS and performed measurements up/down weight 154/131 t. Rotational weight 141 t 8-10 KNM. 1000 LPM/35 bar.
10:15 - 11:30: Reamed down from 2712 to 2878 m with 2000 LPM/110 bar and 60 RPM/8-15 KNM. Dry cement cuttings on shakers.
11:30 - 12:00: Tagged hard cement at 2878 m with 10 t. Confirmed tagging.
12:00 - 13:00: Racked back one stand and circulated BTM up with 3000 LPM/229 bar and 20 RPM/7-8 KNM.
13:00 - 13:15: Flowchecked well on TT well static.
13:15 - 15:00: POOH with 8 1/2" clean-out assy on 5 1/2" DP from 2870 to 1457 m.
15:00 - 18:00: M/u TDS and circulated to reduce MW from 1,38 to 1,28 SG. Filled sand traps to assist with centrifuge. Simultaneously broke out and l/d cement assy. Changed out casing tongs.
18:00 - 18:15: Pumped slug and chased same.
18:15 - 19:00: POOH with 8 1/2" clean-out assy on 5 1/2" DP from 1457 to 977 m.
19:00 - 19:15: Held TBT with ongoing crew.
19:15 - 20:00: POOH with 8 1/2" clean-out assy on 5 1/2" DP from 977 to 210 m.
20:00 - 20:15: POOH with 8 1/2" clean-out assy on 5 1/2" HWDP from 210 to 7 m.
20:15 - 20:30: Held TBT for removing ps21 slips and handling BHA.
20:30 - 20:45: Removed ps21 slips and installed master bushing.
20:45 - 21:00: L/d 8 1/2" clean-out assy to deck.
21:00 - 21:15: Held TBT for handling cutting assy. Cleaned and cleared rig floor.
21:15 - 22:00: P/u 9 5/8" cutting assy. Connected TDS and tested knives. Prepared knives for RIH.
22:00 - 22:15: Installed ps21 slips.
22:15 - 22:30: RIH with 9 5/8" cutting assy on 5 1/2" HWDP from 10 to 214 m.
22:30 - 23:45: Continued RIH with 9 5/8" cutting assy on 5 1/2" DP from 214 to 534 m. Filled pipe at 494 m. Leakage on forward PRS hydraulic hose occured.
23:45 - 00:00: Repaired leaking hose on forward PRS.

24-hour summary: Continued RIH with 8 1/2" clean-out assy from 168 to 2712 m. Washed down and drilled cement to confirmed hard cement at 2878 m. Confimed same by setting down 10 t. Circulated BTM up and POOH to 1457 m. Circulated to take down MW from 1,38 to 1,28 SG. Continued POOH with 8 1/2" clean-out assy to 534 m.