bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
00:00 - 03:45: Drilled and steared 17 1/2" hole from 1809m to 1866m. 4490 l/min, 250 bar, 160 RPM, 11-13 KNM. Wob 1-4 ton, ROP 15-17 m/hr.
03:45 - 04:15: Picked off bottom, circulated and reciprocated pipe while trouble shooting problems in cutting injection system. 3100 l/min, 140 bar, 60 RPM, 7-9 KNM.
04:15 - 05:30: Drilled and steared 17 1/2" hole from 1866m to 1884m. 4490 l/min, 250 bar, 160 RPM, 11-13 KNM. Wob 1-4 ton, ROP 15-17 m/hr. Cuttings to skip, while cleaning slurry pump.
05:30 - 06:00: Drilled and steared 17 1/2" hole from 1884m to 1889m. 4490 l/min, 250 bar, 160 RPM, 11-13 KNM. Wob 3-4 ton, ROP 15-17 m/hr. Cuttings pump back, injection re-established. P/u and build 5 stands of 13 3/8" casing and racked on set back during last 12 hrs.
06:00 - 12:00: Drilled 17 1/2" hole from 1889m to 1970m. 4490 l/min, 250 bar, 160 RPM, 11-13 KNM. Wob 1-4 ton, ROP 15-17 m/hr. Meanwhile MU 13 3/8" CSG in stands. 09 00 broke two bolts on flushjoint elevator tilt cylinder. Secured and repaired flush joint elevator.
12:00 - 19:15: Drilled 17 1/2" hole from 1970m to 2062m. 4490 l/min, 253 bar, 160 RPM, 11-13 KNM. Wob 1-4 ton, ROP 15-17 m/hr. Plugging i CRI and conveyers. Meanwhile repaired flushjoint elevator on FWD PRS.
19:15 - 21:45: Pulled off bottom due to plugging on CRI and cuttings conveyers. Circulated and reciprocated pipe, 3000 l/min, 125 bar, 60 RPM, 9 KNM while sorting out CRI and conveyers.
21:45 - 00:00: Drilled 17 1/2" hole from 2062m to 2104m. 4490 l/min, 256 bar, 160 RPM, 11-13 KNM. Wob 2-4 ton, ROP 15-17 m/hr.

24-hour summary: Drilled and steered 17 1/2" hole from 1889m to 2179m. Had 2,5 hrs stop to clear CRI system and cutting conveyers. MU 3 stands of 13 3/8" casing as simultaneous operation.
Hourly activities:
00:00 - 03:45: Drilled 17 1/2" hole from 2104m to 2155m. 4490 l/min, 258 bar, 160 RPM, 11-13 KNM. Wob 2-4 ton, ROP 15-17 m/hr.
03:45 - 04:00: Pulled off bottom due to clearing CRI tank. Circulated and reciprocated pipe, 3000 l/min, 125 bar, 60 RPM, 9 KNM.
04:00 - 06:00: Drilled 17 1/2" hole from 2155m to 2179m. 4490 l/min, 258 bar, 160 RPM, 11-13 KNM. Wob 3-5 ton, ROP 15-17 m/hr. MU 3 stands of 13 3/8" casing last 12 hrs.
06:00 - 12:00: Drilled and steered 17 1/2" hole from 2179m to 2267m. 4490 l/min, 256 bar, 160 RPM, 11-13 KNM. Wob 2-4 ton, ROP 15-17 m/hr.
12:00 - 19:00: Drilled and steered 17 1/2" hole from 2267m to 2361m. 4490 l/min, 258 bar, 160 RPM, 13-15 KNM. Wob 2-4 ton, ROP 15-17 m/hr.
19:00 - 21:00: Drilled and steered 17 1/2" hole from 2361m to 2385m. 4530 l/min, 277 bar, 180 RPM, 13-15 KNM. Wob 2-4 ton, ROP 15-17 m/hr. Problem with mud pump.
21:00 - 21:15: Picked off bottom due to wash out in mud pump 1 piston. Lost suction on mud pumps. Lined up for drilling with 2 mud pumps. Lost suction on CRI pump.
21:15 - 00:00: Problem cleared. Drilled and steered 17 1/2" hole from 2385m to 2414m. 4530 l/min, 277 bar, 180 RPM, 13-15 KNM. Wob 4-6 ton, ROP 15-17 m/hr.

24-hour summary: Drilled and steered 17 1/2" hole from 2179m to 2467m. 4500 l/min, 250-275 bar, 160-180 RPM, 13-23 KNM. Wob 4-8 ton, ROP 15-17 m/hr. Observed stick slip and shock level 2 in BHA at 2432m. MU 15 stands of 13 3/8" as simoultaneous operation.
Hourly activities:
00:00 - 02:15: Drilled and steered 17 1/2" hole from 2414m to 2432m. 4500 l/min, 275 bar, 180 RPM, 13-23 KNM. Wob 6-8 ton, ROP 15-17 m/hr. MWD tool battery empty. All signals work when pumps on, no signal without pumping.
02:15 - 02:30: Picked off bottom and reamed 1 joint due to stick slip and shocks at level 2 in BHA.
02:30 - 06:00: Drilled and steered 17 1/2" hole from 2432m to 2467m. 4500 l/min, 275 bar, 160 RPM, 20-26 KNM. Wob 6-8 ton, ROP 10-15 m/hr. Simultaneously MU and racked 15 stands of 13 3/8" casing in derrick over last 24 hrs, 27 stands in total.
06:00 - 12:00: Drilled and steered 17 1/2" hole from 2467m to 2550m. 4500 l/min, 275 bar, 150 RPM, 17-19 KNM. Wob 4-7 ton, ROP 15-17 m/hr.
12:00 - 13:30: Drilled and steered 17 1/2" hole from 2550m to 2574m. 4500 l/min, 275 bar, 150 RPM, 17-19 KNM. Wob 4-7 ton, ROP 15-17 m/hr.
13:30 - 14:00: Picked off bottom, serviced TDS, 2500 l/min, no rotation.
14:00 - 17:30: Drilled and steered 17 1/2" hole from 2574m to 2616m, TD of section. 4500 l/min, 275 bar, 150 RPM, 17-19 KNM. Wob 4-7 ton, ROP 15-17 m/hr.
17:30 - 18:45: Circulated 2000 ltrs at bottom. 4500 l/min, 275 bar, 160 RPM, 17-19 KNM. 2,5m3/hr mud loss.
18:45 - 21:45: Circulated hole clean. 4490 l/min, 280 bar, 150 RPM, 12-14 KNM. Reciprocated pipe between 2616m and 2589m. Had 1,5m3/hr mud loss during circulation.
21:45 - 00:00: Circulated hole clean. 4490 l/min, 280 bar, 150 RPM, 12-14 KNM. Reciprocated pipe between 2616m and 2589m. Had 1m3/hr mud loss during circulation, increasing to 1,5m3/hr. Started to mix LCM pill.

24-hour summary: Drilled and steered 17 1/2" hole from 2467m to 2616m, TD of well. 4500 l/min, 275 bar, 150 RPM, 17-19 KNM. Wob 4-7 ton, ROP 15-17 m/hr. Circulated 3 x b/u, flow check prior to pump LCM pill, static loss 400 ltr/hr.
Hourly activities:
00:00 - 05:00: Circulated hole while waiting on LCM pill mixing. 3500 l/min, 180 bar, 50 RPM, 12-14 KNM. Reciprocated pipe between 2616m and 2589m.
05:00 - 05:30: Circulated hole while waiting on hi-vis pill mixing. 3500 l/min, 180 bar, 50 RPM, 12-14 KNM. Reciprocated pipe between 2616m and 2589m.
05:30 - 06:00: 
06:00 - 08:15: Pumped LCM pill as we pullled 17 1/2" BHA from 2495m to 2351m. 900 l/min, 20 bar, no rotation.
08:15 - 16:15: Pulled from 2351m to 2328m. Observed 30 ton overpull. Observed pack off repetedly. Worked string from 2360m to 2328m, 0-4500 l/min, 0-270 bar, 0-120 RPM, 0-25 KNM, 0-30 ton over pull.
16:15 - 18:30: Circulated bottom up, 4500 l/min, 270 bar, 120 RPM, 10-13 KNM. Reciptocated pipe between 2360m and 2346m.
18:30 - 19:30: Pulled from 2360m to 2346m. No pumping no rotation. Pulled 2m lowered 1m in steps. Took weight at 2350m.
19:30 - 22:00: Lowered string to 2356m, started to backream from 2356m to 2293m. Increased pumps tn steps to 2000 l/min, 65-70 bar, 80 RPM, 11-13 KNM. Layed out 1 joint of 5 1/2" DP.
22:00 - 23:30: Back reamed from 2293m to 2250m with increased flow to 3600 l/min, 188-190 bar, 80 RPM, 12-15 KNM.
23:30 - 00:00: Increased parameters to 4500 l/min, 275 bar, 180 RPM, 13-15 KNM.

24-hour summary: Pumped 38m3 LCM pill from 2495m to 2351m. POOH from 2351m. Took 30 ton weight at 2328m. Worked string from 2351m to 2328m, 0-4500 l/min, 0-270 bar, 0-120 RPM, 0-25 KNM, 0-30 ton over pull. Circulated bottom up, 4500 l/min, 270 bar, 120 RPM, 10-13 KNM. Attempted to pull, no go. Backreamed 3 stands. Pulled 4 stands, observed 25-30 ton over pull. RIH with 4 stands, continued to back ream from 2253m to 2212m. 4500 l/min, 275 bar, 180 RPM, 12-14 KNM.
Hourly activities:
00:00 - 02:00: Circulated 2 x bottom up, 4500 l/min, 275 bar, 180 RPM, 13-15 KNM. Observed increase in cuttings at shakers when 1 x bottom up. Reciprocated pipe between 2250m and 2213m.
02:00 - 02:15: Flow checked well, 300 l/hr static loss.
02:15 - 03:15: POOH from 2213m. Pulled 4 stands increasing over pull to 25-30 ton. Observed trip tank 200 l above expected level. Checked level in drill string 20m below RKB.
03:15 - 04:45: RIH to 2248m, took 10-12 ton, started pumps in steps to 3600 l/hr, RIH to 2252m.
04:45 - 05:00: Flow checked prior to back reaming. 360 l/min static loss.
05:00 - 05:30: Established parameters for back reaming, 4500 l/min, 275 bar, 180 RPM, 12-14 KNM.
05:30 - 06:00: Back reamed from 2252m to 2212m. 4500 l/min, 275 bar, 180 RPM, 12-14 KNM.
06:00 - 07:00: Back reamed with 17 1/2" BHA from 2212m to 2090m. 4500 l/min, 265 bar, 180 RPM, 12-14 KNM.
07:00 - 07:15: Set power drive to neutral.
07:15 - 08:45: Back reamed from 2090m to 2013m. 4500 l/min, 260 bar, 180 RPM, 12-14 KNM.
08:45 - 10:15: Packed off stright afher connection. Took 10-15 ton over pull at 2013m. RIH to 2021m. Established circulation, staged pumps to 4500 l/min, 265 bar, 150 RPM, 10-15 KNM.
10:15 - 13:45: Circulated hole clean, reciprocated string from 2021m to 2035m. 4500 l/min, 265 bar, 150 RPM, 12-14 KNM. Lots of cuttings on shakers after 1 x bottom up. Circulated 4 x bottom up in total.
13:45 - 14:45: Pumped out from 2021m to 1891m. 2500 l/min, 91 bar.
14:45 - 15:00: Attempted to POOH from 1891m without pumping. Took 20 tom over pull at 1889m.
15:00 - 20:00: Pumped out from 1891m to 1449m. 4500 l/min, 250 bar.
20:00 - 20:15: Reduced flow to 2000 l/min, 54 bar while pulling power drive into shoe and 1 stand into 20" casing to 1367m.
20:15 - 22:15: Circulated 2 x bottom up at shoe, 4000 l/min, 175 bar.
22:15 - 22:30: Flow checked well, 400 l/hr static loss. Simultaneously, checked and greased PRS.
22:30 - 22:45: Pumped and displaced 4,7m3 1,75 SG slug.
22:45 - 00:00: POOH from 1367m to 774m.

24-hour summary: Back reamed 17 1/2" BHA from 2212m to 2021m. Tried several times to pull stright out, no go. Pumped out from 2021m to 1367m. Circulated 2 x bottom up at shoe, 4000 l/min, 175 bar. Flow check, static loss 400 l/hr. Simultaneously, checked and greased PRS. POOH from 1367m to surface, racked 17 1/2" BHA. RIH with jetsub, jetted BOP.
Hourly activities:
00:00 - 01:00: POOH with 17 1/2" BHA from 774m to 196m.
01:00 - 01:15: Flow checked well prior to pull BHA through BOP. Meanwhile removed PS 21 slips and installed master bushing.
01:15 - 01:30: Operated BOP rams and annular.
01:30 - 01:45: Tool box talk prior to pull and rack BHA.
01:45 - 02:30: Pulled and racked 17 1/2 BHA from 196m to 85m and racked on set back.
02:30 - 03:30: Stop due to malfunction on fingers on finger board in derrick. Trouble shot.
03:30 - 04:45: POOH with 17 1/2" BHA from 85m to surface. B/o x-overs and layed down. Downloaded arc tool as PR schlumberger procedure. Racked 9 1/2" stand on set back.
04:45 - 05:00: Cleared and cleaned rigfloor.
05:00 - 05:15: Held tool box talk prior to pick up wear bushing pulling tool and stand with jetsub.
05:15 - 06:00: Picked 1 stand of 5 1/2" HWDP and connected jet sub. RIH and jetted BOP.
06:00 - 07:00: Picked up and run wear bushing pulling tool on top of 1 stand 5 1/2" HWDP with jetting sub.
07:00 - 07:15: Held tool box talk prior to RIH and retrieve wear bushing.
07:15 - 07:30: RIH from 40m to 138m. Dropped 2 3/4" drift.
07:30 - 07:45: Jetted wear bushing prior to retrieving same. 2400 l/min, 40 bar, 2 RPM.
07:45 - 08:00: Latched on wear bushing. Took 8 ton over pull and pulled free. Measured from tooljoint to land off point, 8,70m.
08:00 - 09:00: POOH with wear bushing from 138m to surface.
09:00 - 09:30: L/d wear bushing and 4 joints of HWDP. Retrieved drift.
09:30 - 10:45: Cleared and cleaned rigfloor.
10:45 - 11:00: Lowered work platform and piston TDS.
11:00 - 11:15: Held tool box talk prior to change washpipe.
11:15 - 13:15: Changed washpipe on DDM. Leakage tested same to 240 bar, OK.
13:15 - 13:30: Held tool box talk prior to rig up for running 13 3/8" casing.
13:30 - 17:00: Rigged up 13 3/8" casing handling equipment.
17:00 - 17:15: Held tool box talk prior to run 13 3/8" casing.
17:15 - 19:00: P/u 13 3/8" casing shoe joint with reamer shoe and checked for flow through with water. Installed bypass baffle.
19:00 - 00:00: Ran 13 3/8" casing as per tally from 13m to 290m.

24-hour summary: Pulled wear bushing. Changed and tested washpipe. Rigged up and run 13 3/8" casing as per tally from surface to 794m.
Hourly activities:
00:00 - 06:00: Ran 13 3/8" casing as per tally from 290m to 794m. MAX running speed 10 joints per hour.
06:00 - 12:30: RIH with 13 3/8" casing from 794 1315 m held pre-job safety meeting with day crew, filled casing with 1. 51 SG OBM every 5 joints.
12:30 - 14:15: R/u and function tested tesco CDS tool held pre-job safety meeting with involved personnel prior to operations.
14:15 - 14:30: Cleaned and tidied up rig floor.
14:30 - 15:30: RIH with stands of 13 3/8" casing from 1310 1382 m held pre-job safety meeting with involved personnel prior to operations, filled casing with 1. 51 SG OBM as RIH.
15:30 - 16:00: Broke circulation and circulated casing with 1. 51 SG OBM prior to running into open hole LPM, 13 bar).
16:00 - 16:15: P/u new stand of 13 3/8" casing from derrick, unable to operate forward PRS.
16:15 - 19:00: Troubleshot PRS lower arm replaced drilling control software.
19:00 - 19:30: Performed toolbox talks with new crew went through tesco CDS tool operations.
19:30 - 20:00: Continued to troubleshot forward PRS unable to lift upper arm.
20:00 - 21:30: RIH with stands of 13 3/8" casing from 1382 1484 m broke out and dressed threads on tesco CDS tool due to alignement problems.
21:30 - 00:00: RIH with stands of 13 3/8" casing from 1418 1848 m filled casing with 1. 51 SG OBM as RIH.

24-hour summary: RIH with 13 3/8" casing from 794 2195 m installed tesco CDS tool and circulated casing prior to running into open hole. Troubleshot and repaired PRS. Washed down with 13 3/8" casing from 2195 2235 m.
Hourly activities:
00:00 - 02:45: RIH with stands of 13 3/8" casing from 1848 2195 m while simultaneously filling casing with 1. 51 SG OBM, lost MAX 15 tons weight Attempted to pass through obstruction at 2195 m, no-go.
02:45 - 03:30: Broke circulation and gradually increased pump rate to 1000 LPM 18 bar. Carefully washed down casing stand to 2210 m. Attempted to RIH with next casing stand without circulation imediately lost weight.
03:30 - 06:00: Washed down with 13 3/8" casing from 2210 2235 m LPM, 22 bar) lost MAX 15 tons weight, unable to pass through obstruction. Gradually increased pump rate from 1500 2000 LPM 22 35 bar.
06:00 - 08:00: Circulated 13 3/8" casing at 2000 LPM 37 bar had to restart circulation twice due to pack-off, MAX SPP 75 bar.
08:00 - 12:15: Washed reamed 13 3/8" casing down from 2235 2290 m 2000 LPM, 16 35 bar, 1 RPM, 20 25 KNM. Observed increasing drag, packed off casing string at 2290 m.
12:15 - 13:45: Shut down pumps, worked casing string and re-established circulation. Gradually increased pump rate to 2500 LPM 23 bar.
13:45 - 18:00: Washed reamed 13 3/8" casing down from 2290 2354 m LPM, 22 35 bar, 1 RPM, 20 25 KNM) set down MAX 15 tons on casing.
18:00 - 18:45: Established circulation after connection, worked casing down from 2354 2356 m 2500 LPM, 22 35 bar, 1 RPM, 20 25 KNM. Packed off casing string at 2356 m.
18:45 - 19:30: Shut down pumps, worked casing string and gradually increased pump rate LPM, MAX SPP 40 bar, 1 RPM, MAX 25 KNM) packed off several times and finally lost returns.
19:30 - 20:00: Worked casing string and attempted to re-establish circulation, no-go.
20:00 - 20:45: Broke out wet and racked back 13 3/8" casing stand in derrick held pre-job safety meeting with involved personnel prior to operation. Broke casing coupling on box end had to adjust weatherford tong back-up jaws accordingly to prevent unscrewing coupling.
20:45 - 23:15: POOH 5 m and verified casing string free. Gradually increased pump rate to 2500 LPM 23 bar. Circulated bu while reciprocated casing string from 2354 2348 m observed clean returns over shakers. M/u next casing stand.
23:15 - 00:00: Broke circulation and gradually increased pump rate. Washed 13 3/8" casing down from 2354 2357 m 2500 LPM, 23 bar.

24-hour summary: Washed reamed 13 3/8" casing down from 2235 2462 m.
Hourly activities:
00:00 - 06:00: Washed 13 3/8" casing down from 2357 2462 m 2500 LPM, 23 25 bar.
06:00 - 07:00: Circulated 13 3/8" casing at 2500 LPM 23 bar. Meanwhile held pre-job safety meeting with involved personnel prior to r/d tesco tool and m/u casing hanger.
07:00 - 08:00: R/d tesco CDS tool and changed to 5 1/2" DP handling equipment.
08:00 - 08:15: M/u 13 3/8" casing hanger assy.
08:15 - 09:00: Removed FMS and installed master bushing. Meanwhile established circulation at 2000 LPM 21 bar.
09:00 - 09:30: Washed down with 13 3/8" casing from 2462 2471 m at 2000 LPM 21 bar.
09:30 - 09:45: R/d casing tong.
09:45 - 17:15: M/u first stand of 5 1/2" HWDP. Broke circulation and gradually increased pump rate to 2430 LPM 34 46 bar. Washed down with 13 3/8" casing from 2471 2603 m on 5 1/2" HWDP landing string.
17:15 - 17:30: M/u cementing head.
17:30 - 19:30: Broke circulation and gradually increased pump rate to 2200 LPM 44 bar. Washed down with 13 3/8" casing from 2603 2607. 5 m, landed hanger and set down casing weight 8 tons.
19:30 - 21:30: Circulated and conditioned mud prior to casing cementing job broke circulation and gradually increased pump rate to 2960 LPM 64 bar, circulated a total of 1. 2 x casing volumes. Mud weights in/out 1. 51 SG, no losses seen. Meanwhile held pre-job safety meeting with involved personnel prior to cementing operations reviewed check lists and relevant safety operational issues.
21:30 - 22:00: Pumped 8 m3 of base oil, followed by 20 m3 of 1. 60 SG tuned spacer e+ with rig pumps at 1200 1550 LPM. Displaced spacer to rig floor with 3 m3 of 1. 51 SG OBM. Lined up to pump from cement unit, verified surface routing OK.
22:00 - 23:00: Released bottom dart. Mixed and pumped 28 m3 of 1. 90 SG cement slurry with cement unit at 800 900 LPM. Displaced surface cementing lines with 0. 5 m3 drill water, released top dart. Flushed surface cementing lines with additional 1. 5 m3 drill water. Lined up to pump 1. 51 SG OBM with rig pumps.
23:00 - 00:00: Started to displace cement slurry in place with rig pumps at 2960 LPM 47 bar. Unable to verify bottom wiper plug land shear.

24-hour summary: M/u 13 3/8" casing hanger, washed down with casing string on 5 1/2" HWDP landing string. M/u cementing head and landed casing hanger. Performed casing cementing operations, set and leak tested seal assy. L/d cementing head.
Hourly activities:
00:00 - 00:30: Continued to displace cement slurry in place with rig pumps recorded 20 bar pressure increase when cement spacer slurry entered into open hole. Reduced pump rate to 1200 LPM 27 bar prior to bumping top plug. No losses seen during the entire cementing and displacement operations. Bumped top wiper plug at 8704 strokes, corresponding to 96. 2 pump efficiency. Shut down pumps and observed pressure drop from 38 18 bar. Pumped additional 20 strokes and observed pressure increase from 18 31 bar with returns back to surface. Shut down pumps.
00:30 - 00:45: Bled off casing pressure 0. 4 m3 OBM in return, verified float OK.
00:45 - 02:30: Installed seal assembly according to vetco procedure held pre-job safety meeting with involved personnel prior to operations.
02:30 - 05:30: Leak tested seal assembly to 35/300 bar for 5/15 min OK.
05:30 - 06:00: Released padrt and l/d cementing head.
06:00 - 06:15: Cleaned and tidied up rig floor.
06:15 - 06:30: Installed 2 x sponge balls, wiped flushed 5 1/2" HWDP landing string at 660 LPM 4 bar.
06:30 - 08:00: Retrieved casing landing string, l/d padrt and 2 x 5 1/2" HWDP joints. Held pre-job safety meeting with involved personnel prior to operations.
08:00 - 08:30: R/d top drive air hose for tesco CDS tool, removed excess casing handling equipment from rig floor.
08:30 - 10:15: RIH with jet sub and WB assy, cleaned WH area at 1500 LPM 10 bar.
10:15 - 12:00: Installed 13 3/8" wear bushing over-pull tested same 4 tons OK. POOH and l/d WBRT.
12:00 - 13:30: M/u and RIH with BOP test tool held pre-job safety meeting with involved personnel prior to operations.
13:30 - 18:00: Leak tested BOP and TDS IBOP s to 20/345 bar for 5/10 min OK.
18:00 - 19:45: POOH with BOP test assy, l/d test tool, XO s and jet sub.
19:45 - 20:15: Cleaned and tidied up rig floor. Meanwhile inspected greased top drive.
20:15 - 23:00: Cut and slipped drilling line held pre-job safety meeting with involved personnel prior to operations. Calibrated crown and floor savers.
23:00 - 00:00: L/d 17 1/2" drilling BHA from derrick inspected PRS dies rollers and held pre-job safety meeting with involved personnel prior to operations.

24-hour summary: Retrieved casing landing string. Install WB and leak tested BOP. Slipped cut drilling line. L/d 17 1/2" drilling BHA from derrick. M/u 12 1/4" drilling BHA. Attempted to leak test 13 3/8" casing.
Hourly activities:
00:00 - 03:00: Continued to l/d 17 1/2" drilling BHA from derrick.
03:00 - 03:15: Cleaned and tidied up rig floor. Meanwhile prepared to p/u 12 1/4" BHA.
03:15 - 04:45: Started to m/u 12 1/4" BHA held pre-job safety meeting with involved personnel prior to operations. Meanwhile prepared for casing test.
04:45 - 05:00: Leak tested surface lines to 35/300 bar for 5/10 min OK. Meanwhile lifted BHA out of hole.
05:00 - 05:45: Attempted to leak test 13 3/8" casing against shear rams with 1. 51 SG OBM pressure dropped at 90 bar and stabilised at 67 bar, 1250 ltr pumped when shutting down pump.
05:45 - 06:00: Bled off casing pressure, evaluated further operations.
06:00 - 07:00: Deactivated schlumberger arc tool, racked 12 1/4" BHA stand in derrick.
07:00 - 08:15: P/u 3 x 8 1/4" DC s from deck, m/u and racked stand in derrick held pre-job safety meeting with involved personnel prior to operations.
08:15 - 09:00: Held pre-job safety meeting with involved personnel prior to p/u 5 1/2" DP from deck. Moved rollers and changed to 5 1/2" DP handling equipment.
09:00 - 13:45: M/u and RIH with 5 1/2" DP to 795 m p/u single joints from deck.
13:45 - 16:15: POOH with 5 1/2" DP, racked same in derrick.
16:15 - 17:30: Leak tested 13 3/8" casing with 1. 51 SG OBM to 55 bar, pumped 746 ltr, bled back 720 ltr OK held pre-job safety meeting with involved personnel prior to operations.
17:30 - 18:00: Held pre-job safety meeting with involved personnel prior to m/u 12 1/4" BHA, cleaned and tidied up rig floor.
18:00 - 20:15: M/u and RIH with 12 1/4" BHA initialized schlumberger arc tool.
20:15 - 21:45: RIH with BHA on 5 1/2" DP from 178 600 m filled pipe every 300 m.
21:45 - 22:00: Function tested schlumberger tools at 2300 LPM 95 bar OK.
22:00 - 00:00: RIH with BHA on 5 1/2" DP from 600 1550 m filled pipe every 300 m, performed kick drill with crew.

24-hour summary: P/u 8 1/4" DC and 5 1/2" DP from deck, racked same in derrick. Leak tested 13 3/8" casing to 55 bar. M/u and RIH with 12 1/4" BHA to 2562 m, washed down and tagged float at 2577 m. Drilled wiper plugs, float and casing shoe track from 2577 2599 m. Displaced well to 1. 30 SG OBM.