Hourly activities:
00:00 - 03:15: RIH with 20" 133# n80 tenaris er casing from 1066 m to 1238 m MD. Filled casing with 1,40 SG KCL mud every 5th joint. Counted joints left on deck 18 OK.
03:15 - 06:00: Broke out lafleur packer. Rigged down 310 MT BX elevator. Rigged down long bails. Installed drilling bails and DP elevator. Removed equipment from drillfloor.
06:00 - 07:00: Picked up 18 3/4" wellhead. Removed protective cap. Washed and checked threads. Made up 18 3/4" WH to 20" casing.
07:00 - 07:30: Removed PS-30 slips from rotary and installed outer ring.
07:30 - 08:30: Attempted to RIH with 20" casing 18 3/4" WH negative. Worked to free pipe with alternating up/down weights, 50 MT set down 60 MT overpull negative 20" casing differential stuck. String movement 50 cm. Set down 50 MT weight. Installed split bowl and set casing in slips. Discussed situation, decided to attempt making up TDS and displace well from 1,40 SG KCL mud to seawater.
08:30 - 08:45: Screwed in TDS to pup joint on cart while observing movement on cart. Managaed to get torque wrench in position without jeapordizing cart make up. Made up TDS.
08:45 - 11:15: Staged up pumps to 660 LPM, verified returns to seabed. Staged up pumps to 2000 LPM SPP 30 bar.
11:15 - 12:15: Attempted to free string while circulating at 2000 LPM. Set down overpull 60/60 MT. Increased set down weight to 80 MT and observed string comming free. Took up/down weights 270/220 MT. Cummulative volume of seawater pumped 300 m3.
12:15 - 14:00: Reduced flowrate to 500 LPM and reciprocated string while rigging down and removing casing tong. RIH to 1249 m MD and hung off wellhead in manual slips.
14:00 - 14:30: Filled gap between wiper plugs through port on cart. Verified free rotation of cart tool.
14:30 - 15:15: Made up TDS to stand of 5 1/2" HWDP and cart. Worked the string while investigating activity on seabed.
15:15 - 15:30: Removed split bushing from RT. Ran 18 3/4" WH cart past rotary. Installed master bushings.
15:30 - 17:45: RIH with 20" casing 18 3/4" wellhead on 5 1/2" HWDP from 1251 m to 1383 m MD. Washed down with 1000 LPM SPP 14 bar.
17:45 - 18:30: Worked through tight area from 1383 m to 1389 m MD 25 MT drag. Washed down with 2000 LPM SPP 24 bar.
18:30 - 19:15: Picked up cement head and continued working tight spot down to 1289 m MD. Landed and locked 18 3/4" wellhead in 30" conductor housing at 139,72 m MD by setting down string weight datum 138. 94 m RT). Performed 50 MT overpull test on wellhead OK.
19:15 - 19:45: Held prejob meeting for cementing 20" casing. Hooked up cement hose to cement head.
19:45 - 20:15: Verified line up. Tested cement line to 200 bar OK.
20:15 - 00:00: Dropped 1 3/4" ball for bottom wiper plug. Sheared bottom wiper plug with 50 bar. Mixed and pumped 90 m3 1,56 SG SSA cement 1) cement at 1100 LPM cup 23 bar. Mixed and pumped 120 m3 1,56 SG cement 2) at 1100 LPM cup 21 bar.

24-hour summary: Made up 18 3/4" casing. Attmepted to RIH with casing negative casing was differential stuck. Displaced well from 1,40 SG mud to seawater and worked casing free. RIH with 20" casing to 1389 m MD and landed wellhead in conductor housing at 139,7 m MD. Cemented 20" casing, bumped plug and confirmed no backflow.