Hourly activities:
00:00 - 01:00: Drained riser. Meanwhile prepared BPV plug and running tool. Changed to 3 1/2" handling equipment.
01:00 - 02:00: Rigged up modified trip tank on WH deck. Attempted to flowcheck well on modified trip tank from a-annulus. Unable to pump or getting returns. Rigged up new pump. Re-attempted to flowcheck well on modified trip tank. Found VR plug blinded off service wing on WH.
02:00 - 02:45: Discussed situation.
02:45 - 03:00: Performed TBT for removing flange on WH.
03:00 - 03:15: Removed flange on WH. Removed VR plug. Re-installed flange on WH. Installed circulation valves for modified trip tank.
03:15 - 04:45: Performed extended flow check of well over modified trip tank on WH. Well static for 45 min, then losses. Lost 130 ltr/hr for 15 min. Observed small gain ltrs), then static.
04:45 - 05:45: Continued flow checking well for 1 HR over modified trip tank on WH deck, static.
05:45 - 06:30: RIH and installed BPV plug
06:30 - 07:00: POOH with BPV RT. L/d same.
07:00 - 07:15: Performed TBT for pulling diverter
07:15 - 08:15: Prepared chains and lifting bridle for diverter. Pulled diverter
08:15 - 08:45: Pulled slip joint
08:45 - 09:45: Load shifted to BOP carrier. Removed tension cylinders
09:45 - 10:15: N/d BOP
10:15 - 10:30: Removed parts of scaffolding around riser to be able to skid over to test stump.
10:30 - 11:00: Moved BOP from well center to BOP test stump.
11:00 - 11:15: Removed remaining scaffolding around riser.
11:15 - 11:30: Performed TBT for pulling riser.
11:30 - 12:15: Removed master bushing and outer ring. Attached chains and lifting bridle to riser joint. Disconnected riser from WH. Removed hole cover and pulled riser joint to drill floor. Installed outer ring and master bushing. Installed hole cover.
12:15 - 13:30: Inspected tubing hanger. Observed increased u-tube from well while removing communication collar.
13:30 - 13:45: Performed TBT for installing riser
13:45 - 15:00: Pulled master bushing and outer ring. Installed riser.
15:00 - 15:30: Built scaffolding around riser joint
15:30 - 16:15: Moved BOP from stump to well center. Landed BOP on riser joint.
16:15 - 16:30: Finished scaffolding around riser.
16:30 - 17:00: M/u NT-2 connector.
17:00 - 18:00: Installed tension cylinders. Load shifted weight from BOP carrier to tension system.
18:00 - 18:15: Installed slip joint
18:15 - 19:00: Installed diverter. M/u slip joint
19:00 - 19:15: Performed TBT for BOP connector test
19:15 - 19:45: R/d chains from TDS. Installed BX elevator. Change to 3 1/2" inserts.
19:45 - 20:00: M/u BPV RT. RIH to 6m.
20:00 - 20:30: M/u bolts on slip joint
20:30 - 21:00: Pressureized diverter system and overshot packer.
21:00 - 23:00: Consulted onshore organization. Observed well on TT and modified TT on WH. Gained 240 ltr/20min at TT, lost 200 ltrs/20min on WH TT.
23:00 - 23:30: Consulted onshore organization. Well control duty and onshore organization concluded to perform BOP connector test and circulate well to even brine weight, no kill pill. Observed well on TT and modified TT on WH. Gained 140 ltr/20min at TT, lost 130 ltrs/20min on WH TT.
23:30 - 23:45: RIH with BPV dart RT to 20m. Installed dart. POOH
23:45 - 00:00: Lined up for connector test meanwhile flushed TT with clean brine

24-hour summary: drained riser performed exteded flow check on modified TT on WH installed BPV plug n/d BOP and diverter inspected th observed u-tube out of well n/u BOP observed well on TT and modified TT on WH. Gained slightly more in TT than on WH. performed BOP connector test to 20/345 bar