Hourly activities:
00:00 - 01:30: Continued RIH with 20" casing from 956 m to 1052 m. Took 5 MT weight at 1052 m Filled every jnt with SW.
01:30 - 03:00: Engaged FAC tool. Had to use PRS to align FAC tool due to strong sea current. Established circulation of 220 LPM 28 bars. Washed down from 1052 m to 1055 m.
03:00 - 05:00: Continued RIH with 20" casing from 1055 m to 1155m. Unable to get good shoulder indication on graf as making up jnt 18 and 19. Filled every jnt with SW.
05:00 - 06:00: Laid out jnt 18 and 19
06:00 - 08:00: RIH with 20" casing from 1144 m to 1218 m. Filled every jnt with SW. Up/down weight 222/184 MT.
08:00 - 10:00: Held tool box talk prior to change over to 5½" handling equipment. Performed same.
10:00 - 10:15: Held tool box talk prior to pick up and install 18 3/4" WH with cart. Unable to open/close 5½" elevators.
10:15 - 13:15: Trouble shooted elevator. Rigged down 5½" elevator. Changed out hydraulic filter.
13:15 - 13:45: Trouble shooting failure on elevator. Meanwhile rigged up 20" casing elevator. Attempted to move string with 28 MT overpull MT on weight indicator).
13:45 - 14:15: Held tool box talk prior to install 20" circ. Swage and CMT. Hose. Performed same.
14:15 - 15:15: Picked up 20" casing. Had to pull 128 MT overpull to free casing MT on weight indicator). After casing freed up/down weight 230/190 MT. Rigged down 20" casing elevator. Rigged up 5½" DP elevator. Rigged down 20" circ. Swage and CMT. Hose.
15:15 - 15:30: Picked up and made up 18 3/4" WH with cart.
15:30 - 16:00: Removed PS-30 slips and installed master bushing.
16:00 - 16:30: Cleared rig floor. Rigged down casing tong.
16:30 - 18:15: Continued RIH with 20" casing from 1218 m to 1362 m. Washed down from 1294 m to 1362 m with 500/1000 LPM 37 bars due to increasing holedrag. Returns observed through cementing ports in f-5 conductor.
18:15 - 18:45: Held tool box talk prior to pick up and make up CMT head. Performed same.
18:45 - 19:30: Established circulation, 500 LPM 32 bars. Up/down weight 245/187 MT. Landed 18 3/4" WH into 30" conductor by setting down casing string weight plus 5 MT of landing string weight and engaged lock ring. Performed pull test to 25 MT over total casing and landing string weight.
19:30 - 23:30: Kept landing string in tension with an overpull of 3 MT while circulating. Establish circulation carefully in steps with SW through top drive to 2300 LPM 23 bars. Observed returns from f-5. ROV surfaced and picked up 4 conductor plugs, dived and installed conductor plug after having pumped 166 m of SW. Circulated 1 x casing volume 220 m Returns up f-15. Pressure tested the cement line to 200 bars 10 mins. Meanwhile held tool box talk prior to perform cement operation of 20" casing.
23:30 - 00:00: Commenced cementing lead slurry, 1. 52 SG of 20" casing, 1300 LPM 32 bars. Released preloaded ball 3/4") for bottom wiper plug.

24-hour summary: RIH with 20" casing from 1144 m to 1218 m. Had problems with 5½" elevators. Made up 18 3/4" WH. Ran in and landed same. Circulated 2 x casing volume 440 m Pumped 322 m 1. 52 SG lead slurry at 1300 LPM, 25 28 bars pump pressure. 20 m 1. 92 SG tail slurry at 900 LPM, 25 bars pump pressure. Displaced cement with rig pump. Bumped plug at 9507 stks. 97. 6 pump efficiency.