Hourly activities:
00:00 - 01:15: Continued preparing cement unit for cement operation and volume test to moonpool. Meanwhile broke off lo-torq from the cement head for volume test. Performed housekeeping in moonpool and maintenance on rig floor/derrick.
01:15 - 02:00: Performed volume test of line from cement unit to moonpool. Re-connected lo-torq to cement spool and filled cement spool with water from the cement unit. Volume from cement unit to cement spool in moonpool 900 lts.
02:00 - 03:15: Attempted to pressure test cement spool to 20bar/5min.
03:15 - 03:30: Attempted to leak test cement line to moonpool to 20bar against ltv2.
03:30 - 04:00: Attempted to pressure test cement unit to 20/320bar.
04:00 - 04:30: Halliburton investigated problem. Air in system.
04:30 - 04:45: Pressure tested cement unit to 20/320bar.
04:45 - 06:00: Performed line test from cement unit to cement spool to 20/320 bar for 5/5min. Pressure tested cement spool to 20/320 bar for 5/10min.
06:00 - 06:30: Opened SV altus bled off pressure in XT cross and put 400 bar on DHSV control line.
06:30 - 06:45: Lined up mud pumps to cement spool and prepared to bullhead 50/50 MEG
06:45 - 07:30: Bullheaded 3m3 50/50 MEG. Lined up and pumped 10m3 wash pill at 700lpm/75bar.
07:30 - 11:00: Lined up to SW. Staged up MP#1 and bullheaded SW, 1300lpm/75bar. Pressure steadily increased to 119bar. Mp1 shut down after pumping 22m3. Lined up to MP#2. Continued bullheading SW with MP#2, 1300lpm/119bar. Observed steady pressure increase to 186bar. Mp2 shut down after pumping totally 55m3. Lined up to MP#3. Continued bullheading SW with MP#3, 1300lpm/186bar. Pressured increased to 239bar before starting to decrease.
11:00 - 13:15: Stopped bullheading after pumping 130m3 SW and monitored siwhp, 96 bar. Staged up pump and continued bullheading SW, 1300lpm/158bar. Decreasing pressure trend.
13:15 - 20:00: Siwhp after bullheading 425m3 of SW 75bar siwhp after bullheading 508m3 of SW 61bar siwhp after bullheading 586m3 of SW 57bar siwhp after bullheading 655m3 of SW 55bar siwhp after bullheading 862m3 of SW 49bar
20:00 - 20:15: Performed TBT prior to cement job with involved personnel. Meanwhile continued bullheading SW, 1300lpm/122bar
20:15 - 21:00: Prepared for cement job. Meanwhile continued bullheading SW with rig pumps, 1300lpm/119bar.
21:00 - 22:00: Closed ltv6 on cement spool and opened ltv7. Released bottom dart. Mixed and pumped 20m3 1. 90sg cement. Displaced surface lines with 900ltr hi-vis pill.
22:00 - 22:15: Closed ltv7 and opened ltv8. Released top dart. Pumped 7,1m3 hi-vis pill.
22:15 - 23:00: Displaced cement with 46,4m3 of SW at 1300lpm. Observed pressure increasing when cement hit top perforation. Reduced rate to 700lpm after pumping 43m3 of SW. Lined up to pump contamination pill.
23:00 - 23:30: Pumped 3m3 contamination pill at 700lpm. Pressured built up to 67bar before dropping to 35bar. Stopped pumping and evaluated situation. Attempted to pump additional 2. 5m3 of contamination pill at 700lpm. MAX pressure 51 bar. Stopped pumping and discussed situation with land organization. Attempted to pump additional 1,5m3 of contamination pill at 700lpm. MAX pressure 71 bar, then dropped. Stopped pumping. Appeared that suction was lost due to foam in pit and displacement tank. Total change in pit level 4,5-5m3.
23:30 - 00:00: Lined up to mud pumps. Increased flow gently to 400lpm, pumped totally 840ltrs. Pressure built up to 101 bar rapidly. Closed in well with SV. Estimated TOC between 3080 mmd 3110 mmd based on min/max displacement volume of 59,7/60,2 m3. Started monitoring pressure in XT cross from control room. Siwhp 27,5bar.

24-hour summary: pressure tested cement spool bullheaded 50/50 MEG/SW and wash pill bullheaded SW until well was free for gas bullheaded cement and displaced same pressure tested BOP while WOC.