Hourly activities:
00:00 - 05:00: Replaced TDS service loop. De-isolated equipment and tested TDS functions at different heights as per ET/SIEMENS instructions. Performed manriding and installed tarpaulin to TDS umbilical hoses. De-isolated TDS.
05:00 - 06:00: RIH w/ safelock plug. Established circulation and washed the setting area, 1100 l/min, 14 bar. Installed the 9 5/8" safelock plug at 619,6 m element). Load tested the plug with 20 t down weight. Top of plug at 617 m.
06:00 - 07:30: Lined up and pressure tested the surface lines. Pressure tested the safelock plug from below to 20/232 bar for 5/10 min. Pumped 1851 ltr/bled back 1620 ltr.
07:30 - 08:00: Closed ball valve and released RT from plug as per archer instructions.
08:00 - 09:00: POOH w/ safelock RT on 5 1/2" DP from 619 m to 170 m. Meanwhile displaced choke/kill line to seawater and pressure tested line to 300 bar.
09:00 - 10:00: Displaced well to SW from 170 m to surface w/ 2400 l/min. Pumped base oil and soap pill as per displacement plan.
10:00 - 10:30: POOH on 5 1/2" DP from 170 m to surface. L/o archer RT.
10:30 - 11:00: Pressure tested the safelock plug from above to 20/232 bar for 5/ 10 min. Pumped 450 ltr, bled back same volume.
11:00 - 11:30: P/u bowl protector RT. RIH and retrieved bowl protector. L/d same.
11:30 - 12:45: P/u and m/u MS-T seal retrieval tool. Tested tool on surface as per ge vetco instructions.
12:45 - 13:00: RIH to 21 m. Secured control lines with duct tape.
13:00 - 13:45: Engaged MS-T RT and unseated seal as per ge vetco instructions. Pulled seal assembly free with 76 MT overpull.
13:45 - 14:45: POOH and removed control lines from string. L/d tool to setback area.
14:45 - 15:00: Performed TBT for releasing tension from tieback string using drilquip adjustable sub setting tool. Meanwhile drained riser.
15:00 - 15:30: M/u drilquip adjustable sub setting tool and RIH w/ same on 5 1/2" DP stand from surface to 26 m.
15:30 - 16:15: Set adjustable sub tool, applied 100 bar pressure on string, took 22 MT overpull. Removed tension from tieback string as per DQ instructions.
16:15 - 16:45: Attempted to release tool. Observed overpull. Made several attempts to release tool w/o success.
16:45 - 18:15: Evaluated situation. Discussed situation w/ onshore organisation and drilquip technical support. Decision made to break out tieback adapter and recover same with stuck DQ tool.
18:15 - 18:45: Broke out tieback adapter w/ 3 LH turns, 2-10 KNM. P/u string, observed tieback string free and 5-8 MT additional weight.
18:45 - 19:45: POOH w/ 10 3/4" tieback and stuck adjustable setting tool on 5 1/2" DP stand. B/o double and r/b same in double latch.
19:45 - 22:45: R/u handling equipment for 10 3/4" casing. Changed out weatherford power tongs. Prepared FMS. Cleared rigfloor and temporary stored tools in setback area speed above crane limit).
22:45 - 23:00: Performed TBT after crew change.
23:00 - 00:00: Moved weatherford tong to well center and installed hydraulic hoses.

24-hour summary: Replaced TDS service loop and tested TDS. Set 9 5/8" safelock plug at 619 m and pressure tested same from below and above. Retrieved bowl protector. Retrieved MS-T seal assembly. RIH and engaged drilquip adjustable sub setting tool. Released tension from 10 3/4" surface tieback. Troubleshot stuck tool, released tieback adapter and POOH tieback with stuck tool inside. R/u to retrieve 10 3/4" tieback.