Hourly activities:
00:00 - 01:00: Marked pipe with 72 MT and 128 MT hookload. Applied 7 MT on padprt tool and rotated 4 1/4 turn clockwise to set tool. Pipe dropped 8,5" as intended. Closed UPR.
01:00 - 02:15: Held toolbox talk prior to setting MS seal. Pressured up to 207 bar with cement unit through kill line for 10 mins to set the MS seal. Volume pumped 272 liters.
02:15 - 03:00: Opened UPR and pulled 50 MT above landing string weight to unset padprt tool. Pressure tested MS seal to 35/345 bar 5/10 mins. Volumed pumped 447 liters.
03:00 - 04:00: POOH with padrt tool on 5 1/2" HWDP. Laid down padprt tool.
04:00 - 05:00: Closed shear ram and lined up to pressure up underneath with cement unit. Pressured up with cement unit to 345 bar. Pumped a total of 2630 liter on 1st attempt, good correlation with theoretical volume. Observed trendline which did not stabilize steady drop observed at around 1 bar/min. Pressured up twice to 345 bar same trend observed. Total volume pumped 2860 liters attempted to bleed pressure back to cement unit nogo, kill line blocked for unknown reason. Bled back to trip tank and recovered 2500 liters. Decided to re-attempt pressure test up cement line.
05:00 - 06:00: Lined up from cement unit pumping up cement line. Flushed through and performed line test to 345 bar OK.
06:00 - 09:00: Troubleshot leakage in well. Pressured up on well to 345 bar from cement unit through cement line. Similar trendline observed with leakage rate of 0,5-1 bar/min. Pressured up on well twice more. Bled off pressure rapidly and lined back to cement unit. Pressure on cement unit rose from 2,8 bar to 7 bar over 2 hrs. Meanwhile discussed situation and way forward. Prepared for running MS seal retrieval tool.
09:00 - 14:00: Picked up MS seal retirevel tool and inspected seals. RIH with retrieval tool on 5 1/2" HWDP landing string as per vetco procedure. Engaged tool by 1/2" turn lefthand. Set down landing string weight of 10 MT instead of the intended 3 MT. Adjusted string weight and string jumped approx 0,3 m, got sudden gain in trip tank of approx 250 liter. Closed annular and pulled MS seal free with 10 MT overpull. POOH with retireval tool and MS seal on 5 1/2" HWDP. Backed off MS seal, re-set running tool and laid down same.
14:00 - 15:00: Inspected MS seal and found scores on seal. Discussed situation. Prepared hanger jet and wash tool.
15:00 - 19:30: Picked up and made ut vetco jet and wash tool. RIH with tool on 5 1/2" HWDP landing string. Tagged top of 10 3/4 casing hanger. Washed seal area, rotated with 3 RPM while pumping at 2200 LPM. POOH with jet and wash tool. Discussed way forward.
19:30 - 21:00: Prepared for running wbbrt w/10 3/4" wearbushing. Picked up wbrrt, checked tool and installed 10 3/4" wearbushing. RIH with tool wbrrt/wearbushing on 5 1/2" HWDP landing string.
21:00 - 22:30: Set wearbushing at 140,2 m MD. POOH with wbrrt and laid down tool.
22:30 - 00:00: Hung off RTTS in rotary and made up to stand of 5 1/2" HWDP. Installed automatic slips.

24-hour summary: Troubleshot leakage on sealstem. Retrieved MS seal in 10 3/4" hanger. Ran vetco jet and wash tool in 10 3/4" hanger. Installed wearbushing. Ran RTTS to 1650 m MD and tested well with communication up annulus. Stepped up pressure and observed onset of leakage around 300 bar.