Hourly activities:
00:00 - 00:45: Broke casing connection while rotating pipe/bails counterclockwise with TDS. Pulled out until adjustment sub actuation tool in heigh with casing coupling. Observed horizontal latch dog profile packed with cuttings/dirt. Took pictures for reference. Removed dirt/cuttings as required.
00:45 - 01:15: Discussed situation. Decided to pull 10 3/4" tie-back casing for cleaning well.
01:15 - 02:00: Ripped off horizontal dog latch crest. Stabbed adjustable sub actuation tool into 10 3/4" casing. Made up casing coupling. Landed 10 3/4" casing hanger in slips and secured with dog collar.
02:00 - 03:15: Removed long bails and BX elevator. Rigged up short bails.
03:15 - 03:30: Held toolbox talk prior to laying out DP single
03:30 - 03:45: Connected bails to DP elevator on top of c-plate. Removed cargo straps. Pulled out DP single with adjustable sub actuation tool and laid out same. Removed c-plate.
03:45 - 04:45: Picked up casing hanger handling tool and made up to 10 3/4" casing hanger. POOH to 110 m MD. Broke connection between assembly and 10 3/4" space out pup.
04:45 - 05:15: Held toolbox talk prior to POOH with 10 3/4" tie-back casing. Changed to 10 3/4" BX elevator.
05:15 - 06:00: POOH with 10 3/4" tie-back casing from 110 m to 87 m MD.
06:00 - 07:45: POOH with 10 3/4" tie-back casing from 87 m MD to surface.
07:45 - 08:00: Held toolbox talk for rigging down casing running equipment.
08:00 - 08:45: Rigged down casing tong. Removed 10 3/4" BX elevator and installed DP elevator. Cleaned and tidied drillfloor.
08:45 - 09:00: Picked up bowl protector RT and made up to stand of 5 1/2" DP. Made up bowl protector to RT.
09:00 - 09:30: RIH with bowl protector on 5 1/2" DP stand and landed same at 20,44 m MD.
09:30 - 10:00: POOH with bowl protector RT, broke and laid out same.
10:00 - 12:15: Made up vetco jet sub. RIH with jet sub and located across BOP. Made 3 passes across BOP cavities while pumping at 4600 LPM SPP 62 bar.
12:15 - 13:45: RIH with jet sub on 5 1/2" from 10 m to 140 m MD. Made up TDS to each stand. Washed down with 3300-3900 LPM SPP 26-38 bar.
13:45 - 16:45: Washed across subsea wellhead/tie-back threads at 4000 LPM SPP 32bar, made 5 passes. Pumped 4 m3 hi-vis pill. Displaced production riser to TSW.
16:45 - 17:45: POOH with jet sub on 5 1/2" DP and laid out same. Cleaned and tidied drillfloor.
17:45 - 18:15: Made up bowl protector RT to 5 1/2 stand. Pulled bowl protector at 20,44 m, broke and laid out RT.
18:15 - 19:00: Made up jets sub. RIH with jestsub on 5 1/2" DP stand. Made 2 passes across surface wellhead pumping 3600 LPM SPP 39 bar. POOH with jetsub.
19:00 - 19:15: Held toolbox talk for laying out jetsub.
19:15 - 19:30: Laid out jetsub. Cleard and tidied drillfloor.
19:30 - 20:15: Picked up adjustment sub actuation tool on single. Broke single and laid out actuation tool. Made up single to double to get full stand. Made up back-up adjustment sub actuation tool dressed with new horizontal latch ring. Racked back tool and 5 1/2" DP stand.
20:15 - 20:30: Held toolbox talk prior to rigging casing running equipment.
20:30 - 22:15: Changed to 10 3/4" BX elevator. Installed PS-30 slips dressed for 10 3/4" casing. Lifted casing tong onto IR rails and hooked up same.
22:15 - 22:30: Held toolbox talk prior to running 10 3/4" tie-back casing.
22:30 - 22:45: Lifted back-up tie-back adapter onto HTS.
22:45 - 00:00: Ran 10 3/4" c95 60,7# vamtop tie-back casing from surface to 39 m MD.

24-hour summary: POOH with tie-back casing. Set bowl protector. Jetted BOP and subsea wellhead. Displaced riser to TSW. Pulled bowl protector. Jetted surface wellhead. Rig up for runnig tie-back casing. Ran 10 3/4" tie-back casing, adjustment sub and casing hanger. Landed tie-back casing on spear. Made up tie-back adapter in subsea wellhead. RIH with adjustment sub actuation tool, attempted to set retract adjustable sub negative.