Hourly activities:
00:00 - 00:15: Continued line-up for connector test. Meanwhile flushed TT with clean brine.
00:15 - 01:00: Performed low pressure test of BOP connector, 20bar/5min. Continued pressuring up to 250 bar. Stopped pumping and checked that volume pumped corresponded with expected theoretical volume. Continued pressuring up to 345 bar. Performed high pressure test of BOP connector, 345bar/10min.
01:00 - 01:30: Retrieved BPV dart and BPV plug. Found chunks of cement on top of RT.
01:30 - 01:45: Canged to 5 1/2" handling equipment. Meanwhile performed TBT for RIH with spear and pack-off
01:45 - 02:00: P/u and m/u spear/pack-off assy. Inspected tools.
02:00 - 02:15: RIH with spear BHA to 26m.
02:15 - 02:30: Engaged spear and pulled 10 ton OP.
02:30 - 02:45: Lined up to pump down drill string, taking returns through a-annulus via choke and poor boy.
02:45 - 03:15: Initiated circulation. SPP increased rappidly to 30 bar, no pressure on annulus gauge. Pumped slowly until pressure dropped from 63 bar to 7 bar. Observed returns on shaker.
03:15 - 05:30: Staged up pumps in steps to 1200 LPM 144 bar. Return brine weight 1. 18sg until 68 m3 pumped. At 68 m3 pumped the return brine weight decreased to 1. 14sg and slightly changed color pill with graphite). Return brine weight gradually increased to 1. 17sg at 73 m3 pumped. At 77 m3 the return brine weight was back at 1. 18sg. Circulated totally 118m3, until even brine weight in/out.
05:30 - 06:00: Stopped pumps. Disengaged spear. POOH with spear/pack-off BHA.
06:00 - 06:30: Flow checked well, static
06:30 - 07:00: Lined up to modified TT monitored well on rig TT and modified TT. Observed expected u-tube down string and out of a-annulus to height difference of approximately 25m).
07:00 - 07:15: Monitored well on rig TT only. Took sample from a-annulus, 15 ppm oil content. Meanwhile changed handling equipment. Prepared to n/d BOP and diverter.
07:15 - 08:45: Drained BOP and riser out a-annulus.
08:45 - 10:30: Monitored well on WH TT. Gained 50 ltrs first 30min, decreasing trend.
10:30 - 11:15: Monitored well on WH TT, static. Meanwhile installed BPV plug.
11:15 - 11:45: Changed handling equipment for pulling diverter.
11:45 - 12:00: Removed bolts on slipjoint
12:00 - 12:15: Performed TBT for n/d BOP
12:15 - 12:45: Pulled master bushing and installed handrail around rotary. Pulled diverter and l/d same.
12:45 - 13:30: Pulled slipjoint. Installed master bushing.
13:30 - 15:00: Load shifted weight from tension system to BOP carrier. N/d tension system disconnected BOP NT-2 connector
15:00 - 15:30: Skidded BOP off well center.
15:30 - 15:45: Removed scaffolding
15:45 - 16:00: Removed master bushing. Installed handrails around rotary.
16:00 - 16:45: Lifted riser joint off WH, l/d same on drill floor. Installed hatch in moonpool. Installed master bushing
16:45 - 18:00: Cleaned and inspected th area. Took pictures of locking ring.
18:00 - 19:00: Discussed plan forward with onshore organization. Performed SJA for remedial work on th.
19:00 - 22:30: R/u equipment to drill holes in activation ring and stop ring in th. Mounted anchor ring and drilling machine onto WH.
22:30 - 00:00: Drilled hole in th activation ring and stop ring. Slow progression to begin with, increased after first 4-5mm drilled.

24-hour summary: performed BOP connector test to 20/345 bar for 5/10min retrieved BPV plug circulated well to even brine weight 1,19sg in/out. monitored well on TT n/d diverter and BOP performed remedial work on th