Hourly activities:
00:00 - 00:30: Took SCR'S. Performed choke drill.
00:30 - 02:00: Continued drilling cement and float collar at 1050 m MD. Virtually no penetration observed indicating drilling on float collar. Drilling parameters flow 3100 LPM SPP 74 bar rotation 60-70 RPM wob 7-10 MT torque 5-10 KNM.
02:00 - 05:15: Drilled firm cement in shoetrack from 1050 m 1077 m MD. Drilling parameters flow 3100 LPM SPP 76 bar rotation 60-70 RPM wob 5 MT torque 8-12 KNM.
05:15 - 06:00: Broke through 20" casing shoe at 1077 m MD. Observed increased resturn on flowmeter. Picked off bottom and flowchecked static. Continued drilling to 1078 m MD. Flow 3100 LPM SPP 77 bar rotation 60-70 RPM wob 3-5 MT torque 4-11 KNM. Meanwhile broke out and laid down adjustable sub setting tool using FWD PRS and FWD IR.
06:00 - 06:45: Cleaned rathole below 20" casing down to 1083 m MD. Drilled new formation from 1083 m to 1086 m MD. Drilling parameters flow 3100 LPM SPP 78 bar rotation 70 RPM wob 2-4 MT torque 4-9 KNM.
06:45 - 07:15: Pumped 40 m3 hi-vis sweep at 3200 LPM to clean well. Meanwhile held toolbox talk prior to displacing to WBM.
07:15 - 09:30: Displaced well from seawater to 1,20 SG performadrill WBM with 3500 LPM. Flushed choke and kill lines on BOP and lined up sandtraps.
09:30 - 10:15: Obtained even MW in/out 1,21 SG.
10:15 - 11:00: Ran in to TD at 1086 m MD. Observed thight spot at 1081-1085 m MD. Spotted 10 m3 LCM pill in rathole. Pulled back into shoe at 1077 m MD.
11:00 - 12:15: Lined up cement unit. Pressure tested lines prior to performing fit. Closed BOP. Performed fit to 1,38 EMW by pressuring up to 21,5 bar on well.
12:15 - 14:00: Opened BOP and lined up for drilling. Took scrs. Laid out 5 1/2" singel used for spacing out in shoetrack. RIH to 1077 MD. Obtained MWD pressure point from fit, EMW 1,408 SG.
14:00 - 16:30: Established drilling parameters flow 3000 LPM SPP 116 bar. Not able to handle flow over shakers. Worked with shaker configuration. Installed coarser top and bottom screens mesh).
16:30 - 17:30: Drilled 17 1/2" hole section from 1086 m to 1110 m MD. Drilling parameters flow 4000 LPM SPP 112 bar rotation 80 RPM wob 5 MT torque 7-8 KNM ROP 25 m/hrs.
17:30 - 18:00: Lost mud on shakers due to plugged header box and uneven mud distribution. Picked off bottom and reduced flow rate to 1700 LPM to remedy situation. Cleaned shaker box.
18:00 - 21:30: Continued drilling 17 1/2" hole section from 1110 m to 1130 m MD with reduced ROP 10-15 m/hr due to problems to handle fluid returns at shakers. Drilling parameters flow 3500-4000 LPM SPP 103-150 bar rotation 120 RPM wob 4-7 MT torque 3-7 KNM ECD 1,22. Reamed half stand on connection. Meanwhile repaired shaker
21:30 - 00:00: Drilled 17 1/2" hole section from 1130 m to 1198 m MD. Drilling parameters flow 3500-4000 LPM SPP 103-150 bar rotation 120 RPM wob 4-7 MT torque 3-7 KNM ECD 1,22 ROP 25-35 m/hrs. Reamed half stand on connection. Meanwhile repaired shaker

24-hour summary: Cleaned rathole and drilled 3 m new formation down to 1086 m MD. Pumped hi-vis sweep, displaced to 1,20 SG WBM and spotted LCM pill in rathole. Conditioned mud and performed fit to 1,38 EMW. Drilled 17 1/2" section down to 1302 m MD. Had problems with overflow on shakers and screen plugging.