Hourly activities:
00:00 - 01:45: Ran 10 3/4" c95 60,7# vamtop tie-back casing from 39 m to 108 m MD.
01:45 - 02:45: Picked up 10 3/4" casing hanger adjustment sub assembly with handling tool. Made up assembly. RIH to 119 m MD and hung off in RT. Broke off casing hanger handling tool with chaintong and laid out same. Drained riser by opening annulus valves.
02:45 - 03:00: Picked up stand with spear in TDS and made up to TDS. Engaged spear in pup joint below 10 3/4" casing hanger E. 3 m in from top of hanger).
03:00 - 04:00: RIH with 10 3/4" casing hanger on spear. Tagged tie-back threads with 3-4 MT at 139,7 m MD, i. E. Approx 10 cm shallower than expected. Attempted to rotated clockwise with 2700 NM, stalled out after 1/4 turn. Rotated counterclokwise 1/2 turn, worked string and came approx 10 cm further down to previous landing datum). Resumed clockwise rotation at 3 RPM and entered threads within 2700 NM limit. Slacked off weight accordingly for each 2-3 MT gained on block. Observed color bands through annulus outlet to confirm travel and height.
04:00 - 04:30: Increased torque limit to 10170 NM. Pulled 5 MT overpull and resumed rotation. String stalled with 7 KNM+ KNM NM recorded on geoservice screen). Increased to 2 MT overpull, resumed rotation stalled out on approx 3 KNM and spear released. Re-enaged spear. Took 13 MT overpull and resumed rotation, stalled out on 8 KNM+ KNM recorded on geoservice screen). Took overpull to 30 MT.
04:30 - 04:45: Released spear and POOH. Broke out TDS connection and set back stand and spear in derrick.
04:45 - 05:30: Picked up stand with adjustable sub actuation tool in PRS and made up to TDS. Measured in to 1st tool target.
05:30 - 06:00: Pressured up pipe to 140 bar to activate the adjustment sub actuation tool. Picked up to 2nd tool target to engage horizontal latch dogs and torque dogs. Observed 3-4 MT overpull at 2nd tool target. While maintaining overpull started rotation with 1 RPM. Rotated 2 turns 1 KNM. No movement observed on hanger at tensioner deck. Wrong indications. Reattempted setting sequence with same negative result.
06:00 - 07:00: Made another attempt on adjustable sub setting sequence. While maintaining overpull rotated 7 turns and retracted adjustment sub as per procedure.
07:00 - 08:00: Bled off pressure in DP, slacked off 1 m and waited 3 min to allow lock ring to be fully retracted. PU and POOH with adjustment sub actuation tool. Cleaned and cleared rig floor.
08:00 - 09:15: RD CSG tong. Changed from ps30 slips to to master bushings. Broke down and lo spear and adjustment sub.
09:15 - 10:15: PU and MU HRT. RIH with HRT on 5 1/2" HWDP from surface to 20,77 m. MU HRT to 10 3/4" surface hanger by 10 left hand turns.
10:15 - 11:30: MU TDS. Performed tool box meeting before lining up to test 10 3/4" tie-back CSG. Verified line-up and pressured up to leak test 10 3/4" surface tie-back CSG and 10 3/4" x 9 5/8" CSG against VMB plug to 380 bar/10 min with CMT unit. 900 ltrs pumped. Test failed.
11:30 - 12:15: Performed line test to 380 bar/10 min with CMT unit. Test failed.
12:15 - 13:45: Greased surface valves on STP manifold and performed line test. Test failed.
13:45 - 15:30: RU pump-in sub and hose directly from CMT test line. Performed line test to 380 bar/10 min with CMT unit. OK.
15:30 - 16:15: Performed line test to 380 bar/10 min with CMT unit. OK. Leak tested 10 3/4" surface tie-back CSG and 10 3/4" x 9 5/8" CSG against VMB plug to 380 bar/10 min with CMT unit. OK. 605 ltrs pumped and 560 ltrs bled back.
16:15 - 17:15: Released HRT by 10 right hand turns. POOH and LD same. RD CMT line.
17:15 - 18:00: RU to RIH with 10 3/4" MS-T seal assy RT. Found RT dressed for pulling MS-T seal and had to re-adjust length to fit the latch dogs.
18:00 - 18:45: Re-adjusted length on RT to fit the latch dogs to be able to run MS-T seal. Meanwhile held time-out for safety on rig floor and discussed lifting and tugger handling.
18:45 - 20:00: Continued RU to RIH with 10 3/4" MS-T seal assy RT.
20:00 - 21:45: RIH with seal assy RT and MS-T seal from surface to 20. 77 m. Landed out on 10 3/4" CSG hanger and locked RT into riser. Sat MS-T seal by applying 4300 psi. Tested seal through test port in multibowl to 380 bar/10 min. OK.
21:45 - 23:00: Released MS-T seal RT from 10 3/4" CSG hanger and POOH with RT. Lo RT and removed hydraulic hoses.
23:00 - 00:00: Held tool box meeting. MU and RIH with secondary bowl protector from surface to 20. 53 m. Installed secondary bowl protector in surface wellhead. POOH and racked back RT. Cleared rig floor of excess equipment.

24-hour summary: Retracted adjustment sub according to drillquip procedure. Ran casing hanger running tool and tested upper tie-back to 380 bar/10 min. Sat MS seal and test same. Ran bowl protector in surface wellhead. MU and RIH with DP and VMB retrieving tool. Circulated out hi-vis pill with 40 m3 packer fluid. Released VMB plug.