bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
00:00 - 00:45: Continued cleaning out the WH and BOP.
00:45 - 01:45: Laid out washing assy.
01:45 - 02:00: Held tool box talk prior to change out handling equipment and picking up clean out assy.
02:00 - 02:45: Changed out handling equipment to 3 ½", dies in aft ar, BX elevators inserts and insert of the PS-21.
02:45 - 06:00: M/u 7" liner clean out assy. W/ 6" bit and 7" scaper. RIH on 3½" DP from surface to 280m
06:00 - 08:00: Continued RIH with clean out assy. On 3½" DP from 280 to 450m
08:00 - 11:15: Changed elevator inserts to 5" DP. P/o 9 5/8" razor back scraper pick up weight 80 MT. Re-dressed PS-21 and iron roughneck to 5" DP. Removed HTS rollers. RIH with 5" DP from 465m to 1062m.
11:15 - 11:45: Made up 4½" if to 5½" FH x-o. M/u string to TDS, filled string prior to pressure testing of the 7" liner.
11:45 - 13:30: Held tool box talk prior to pressure testing of the 7" liner. Spaced out to middle pipe rams. Confirmed line up, leak tested line up to 310 bars 5 mins. Pressure tested 7" liner pressuring up in increments to 310 bars, 10 mins.
13:30 - 14:15: Bled off pressure, had 4098 l in return. Broke out 4½" if to 5½" FH x-o. Lined up to BOP.
14:15 - 16:30: P/u tie back mill. Held tool box talk prior to change out 5" handling equipment to 5½" handling equipment. P/u MFCT, razor back scraper. Re-dressed PS-21 slips and elevators to 5½" DP. Checked flow rate/pressures. 58spm/103bars 95spm/250bars.
16:30 - 19:00: Continued RIH with clean out assy. On 5½" DP from 1121m to 2008m. Checked flow rate/pressures. 58spm/118bars 95spm/247bars
19:00 - 22:15: Continued RIH with clean out assy. On 5½" DP from 2008m to 3017m. Checked flow rate/pressures. 54spm(1240lpm)/104bars 95spm(2101lpm)/254bars. Pumped 50m conditioned mud 106 SPM, 2330 LPM 300 bars with 20 RPM 11 KNM. Took up/down weight 164/132 MT with pumps off.
22:15 - 23:15: Continued RIH with clean out assy. On 5½" DP from 3017m to 3096m. M/u to TDS and scarped TCP gun hanger setting depth, from 3090m to 3125m with 100 SPM, 300 bars, 40 RPM and 10-14 KNM. Rotation weight 147 MT.
23:15 - 00:00: Continued RIH with clean out assy. On 5½" DP from 3132m to 3420m.

24-hour summary: RIH with clean out assy. Polished and washed 9 5/8" PBR. Conditioned mud and started cleaning surface equipment prior to pump final washing train.
Hourly activities:
00:00 - 01:00: M/u to TDS, confirmed depth with tally. Pumped 1196 LPM 120 bars, 2016 LPM 260 bars and 2120 LPM 289 bars, at 40 RPM. Scraped from 3427m to 3457m bit depth 2970m to 3000m scraper depth. Up/down weight 174/139 MT.
01:00 - 01:30: Continued RIH from 3457m and tagged top of 9 5/8" PBR at 2405,5 m 8m bit depth). Picked back rotated string at 50 RPM 50 SPM 92 bars and 11-14 KNM. Slacked off slowly w/ 50 RPM with the top dress mill assembly and set down 1-2 tonn on top of the PBR for a few minutes. Pulled out of the PBR with rotation.
01:30 - 01:45: Pulled bottom of polish mill 5 meter above liner top and reciprocated the string while conditioning the mud 40 RPM, 96 SPM(2100LPM), 291 bars,
01:45 - 04:45: Sheared MFCT by setting down 24 MT on PBR with top dress mill. Opened the circulation ports. Established circulation of 191 SPM(4200LPM) 230 bars, 40 RPM, 9 KNM kept 6. 8 MT down weight.
04:45 - 05:00: Held tool box talk prior to clean out services lines.
05:00 - 06:00: Commenced cleaning of surface equipment with base oil then soap pil.
06:00 - 12:15: Continued cleaning of surface equipment. Meanwhile injected slops.
12:15 - 12:45: Filled sandtraps with base oil from pit 10 circulated through lines in shakers with base oil.
12:45 - 15:00: Mixed soap pill in pit 10, flushed soap pill through all possible surface lines at maximum rate of 4000 LPM.
15:00 - 19:00: Held tool box talk prior to prepare fluid used for well clean out. Prepared treated SW, pills and cleaned pits. Meanwhile closed bag and opened piperam. Pulled up 1m to close MFCT.
19:00 - 21:45: Prepared seawater pre-mix prior to displacement.
21:45 - 00:00: Started displacing well with soap train to MFCT at 1000 LPM up chokeline. When pill at bit DP pressure reading 230 bars.

24-hour summary: Clean surface equipment prior to pump soap train. Pumped soap train. Inflow tested well over the trip tank. Pressure tested the well to 345 bars with treated sea water.
Hourly activities:
00:00 - 01:15: Continued displacing well with soap train to above MFCT at 1000 LPM, 230 bars constant DP pressure up choke line.
01:15 - 01:30: Stopped pumping. Closed in the well with 200 bars DP, 170 bars choke pressure. Opened MFCT setting down weight.
01:30 - 03:00: Circulated well at 2800 LPM, holding choke pressure constant at 170 bars. New DP pressure 270 bars. Continued circulating 2800 LPM 270 bars constant DP pressure w/ treated sea water
03:00 - 03:30: Closed in well 80 bars when treated sea water at surface. Bled off the pressure from 80 bars in two steps to zero, prior to taking inflow test over the trip tank. Lined up to trip tank.
03:30 - 04:45: Inflow tested well over the trip tank for 30 mins. OK
04:45 - 06:00: Spaced out and closed pipe rams. Pressure tested well 20/345 bars 5/10 mins with treated sea water. Simultaneously mixing for displacing the well with treated sea water below 100 NTU
06:00 - 07:15: Continued to clean surface lines. Prepared to pump TSW.
07:15 - 10:00: With MFCT in open position, pumped TSW at 3400 LPM SPP 284 bar. Total volume pumped 365 m3. NTU reading levelled out at approx 150.
10:00 - 11:00: Closed MFCT. POOH with cleaning assembly on 5 1/2" DP from 3474 m to 3177 m MD. Observed 12 mm locking nut falling from derrick, halted operation.
11:00 - 12:00: Performed FG inspection in derrick. Lock nut traced to clamp on ladder to crown block.
12:00 - 15:30: Continued to POOH with cleaning assembly on 5 1/2" DP from 3177 m to 1080 m MD.
15:30 - 16:00: Changed from 5 1/2" to 5" handling equipment.
16:00 - 16:30: Broke out and laid down 14" razor back assy and tie-back/top dress mill assy
16:30 - 18:30: Continued to POOH on 5" DP from 1062 m to 465 m MD. Changed inserts and jaws on IR to 3 1/2" DP. Changed to 3 1/2" inserts in elevator.
18:30 - 19:00: Broke out and laid down 9 5/8" razor back assy
19:00 - 22:30: POOH with cleaning assy on 3 1/2" DP from 465 m to 14 m MD.
22:30 - 23:30: Broke out and laid down 7" razor back assy Laid out assy pup with 6" bit. Changed to 5 1/2" handling equipment.
23:30 - 00:00: Made up wear bushing running and retrieving tool to stand of 5 1/2" HWDP. Checked tool.

24-hour summary: Displaced well to treated seawater. POOH with 7" x 9 5/8" x 14" cleaning/displacement string. Pulled WB in subsea wellhead. Rigged up for running 9 5/8" x 10 3/4" tie-back string.
Hourly activities:
00:00 - 00:30: RIH with wbrrt on 5 1/2" HWDP. Checked serial numbers of HWDP on way in. Found deviation in tally on joint STD#2, serial number was incorrect compared to tally. Control measured joint and found a lenght deviation of 4,5 cm compared to tally.
00:30 - 01:30: RIH with wbrrt on 5 1/2" HWDP while measuring lenghts on all joints. Found several lenght deviations ranging from a few mm to mamximum 11 cm. Found one more wrong serial number.
01:30 - 02:00: Latched onto WB at 139,5 m MD and pulled same with 25 MT overpull. Broke circulation and washed across wellhead with 3000 LPM using TSW.
02:00 - 03:00: POOH with WB/WBRRT on 5 1/2" HWDP. Control measured 6 more 5 1/2" HWDP joints on way out. Recalculated total tally with new measures and found a deviation of only 2 mm.
03:00 - 05:45: Rigged up casing tong, flush mounted spider and elevator for running 9 5/8" x 10 3/4" tie-back casing.
05:45 - 06:00: Held toolbox meeting prior to start running 9 5/8" x 10 3/4" tie-back casing.
06:00 - 16:45: Ran 9 5/8" tie back casing to 798 m MD.
16:45 - 17:45: Held toolbox talk prior changing elevator. Changed elevator from 9 5/8" to 10 3/4" bx3. Found leakage on hydraulic fitting on 10 3/4" bx3 elevator.
17:45 - 18:30: Changed hydraulic fitting and bolt head connection for return line on 10 3/4" bx3 elevator.
18:30 - 19:30: Picked up and made up 9 5/8" x 10 3/4" x-over. Changed slips segments in flush mounted spider. Hung off on x-over and installed casing swage on top of 10 3/4" casing.
19:30 - 22:30: Slip and cut drilline.
22:30 - 00:00: Performed 6 monthly maintenance and inspection of crown block.

24-hour summary: Ran 9 5/8" tie-back casing from RT to 798 m MD. Installed 9 5/8" x 10 3/4" x-over. Performed slip and cut. Performed manitenance on crown block. Ran 10 3/4" tie-back casing from 798 m to 1141 m MD.
Hourly activities:
00:00 - 00:45: Removed block hang off sling. Calibrated block.
00:45 - 01:30: Held toolbox talk prior to recommencing casing running. Broke off and laid down casing swage.
01:30 - 06:00: Continued to run 10 3/4" casing from 811 m to 1141 m MD.
06:00 - 18:30: Ran 10 3/4" tie-back casing from 1141 m to 2262 m MD. Average running speed 8 jnts/hr.
18:30 - 19:00: Changed from 10 3/4" bx3 elevator to 5 1/2" DP elevator.
19:00 - 19:45: Picked up and made up 10 3/4" casing hanger complete with isolation sleeve and padprt tool
19:45 - 20:45: Removed spider from rotary and installed bushings. Removed casing tong.
20:45 - 23:00: RIH with 10 3/4" casing/hanger on 5 1/2" HWDP landing string. Strapped pipe on way in.
23:00 - 23:30: Made up TDS. Took up/down weights 253/199 MT. Pumped at 450 LPM while running in slowly with landing string. Observed pressure bulid up and lost returns at 2406,4 m MD indicating seals engaging 9 5/8" liner sealbore. Stopped pumps. Observed stinger shroud shearing some 1,20 m further in and got hanger landing depth 0,8 m of 1. 2+0. 8 2m) further in at 2408,4 m MD.
23:30 - 00:00: Performed low pressure test of stinger seals to 70 bar 10 min OK.

24-hour summary: Ran 10 3/4" casing from 1141 m to 2262 m MD. Installed casing hanger and running tool. Ran in on landing string and stung tie-back casing into 9 5/8" PBR at 2408 m MD. Set and tested MS seal POOH with landing string. Attempted to pressure test casing/sealstem observed leakage.
Hourly activities:
00:00 - 03:00: RIH with 9 5/8" RTTS on 5 1/2" DP/HWDP to 1650 m MD.
03:00 - 04:30: Took up/down weights 132/117 MT. Roateted string to set RTTS packer. Slacked of 30 MT on the running string and set packer at 1650 m MD. Lined up to pump from cement unit up cement line and standpipe. Closed standpipe valve and performed line test to 345 bar OK.
04:30 - 05:30: Pressurised well below RTTS packer in 50 bar increments. Held each step for 10 mins. Good tests obtained at 50, 100, 150, 200, 250 bar no gain in trip tank observed. Total volume pumped at 250 bar was 1129 liter.
05:30 - 06:00: At 300 bar leakage was observed, pressure dropped 7 bar 10 min also gained 40 liters in triptank over 10 mins. Volume pumped 1332 liter. Bled off pressure on well.
06:00 - 10:00: Released RTTS. POOH on 5 1/2" DP/HWDP with RTTS. Removed automatic slips and master bushing. Laid down RTTS.
10:00 - 12:00: Picked up wbrrt set in retrieval mode. RIH with wbrrt on 5 1/2" HWDP landing string. Latched on to 10 3/4" wearbushing at 140 m MD and pulled free with 40 MT overpull.
12:00 - 13:15: Picked up padrt tool set in catch mode. RIH on 5 1/2" HWDP landing string and latched on to 10 3/4" hanger according to vetco instructions.
13:15 - 14:45: Picked up with 255 MT hookload and POOH with 9 5/8" x 10 3/4" tie back casing on 5 1/2" HWDP landing string. Removed master bushing.
14:45 - 17:45: Held toolbox talk prior to rigging 10 3/4" casing handling equipment. Installed casing tong, bx3 elevator and spider.
17:45 - 18:15: Held toolbox talk prior to laying down 10 3/4" casing hanger casing. Broke and laid down hanger and padrt tool.
18:15 - 00:00: POOH with 10 3/4" tie-back casing from 2265 m to 1670 m MD. Average pulling speed 11 jnts/hr.

24-hour summary: POOH with RTTS and laid down same. Pulled 10 3/4" wearbushing. Ran in and latched casing hanger and pulled free casing. POOH with 9 5/8" x 10 3/4" tie-back casing from 2408 m to 822 m MD.
Hourly activities:
00:00 - 06:00: POOH with 10 3/4" casing from 1670 m to 822 m MD. Average pulling speed 13 jnts/hr.
06:00 - 08:00: Continued pulling 10 3/4" casing from 822 m to 798 m MD. Hung off on x-over. Broke out and laid down 9 5/8" x 10 3/4" x-over. Changed to 9 5/8" elevator.
08:00 - 11:00: POOH with 9 5/8" casing from 798 m to 550 m MD.
11:00 - 11:15: Changed dies in casing tong from 9 3/4" to 9 5/8" on boat).
11:15 - 16:00: Continued to POOH with 9 5/8" casing from 550 m to 40 m MD.
16:00 - 17:00: Removed spider and installed master bushing. POOH from 40 m MD. Laid down seal stinger. Inspected seals, lower seals missing and significant damage to rest of seals.
17:00 - 17:30: Held tolbox talk prior to breaking back up TSP assembly. Cleared and tidied drillfloor. Changed to 5 1/2" inserts in elevator.
17:30 - 19:30: Picked up TSP assembly. Broke 9 5/8" connection and installed by pass ball drop seat. Re-made 9 5/8" connection and laid down tool on pipedeck.
19:30 - 22:00: Picked up wbrrt. Broke out jet sub and configured tool for BOP testing. RIH with wbrrt and 14" wearbushing on 5 1/2" HWDP landing and set same in wellhead.
22:00 - 22:30: Broke TDS connection and parked travelling block for maintenance.
22:30 - 00:00: Pressure tested BOP to 35/345 bar 5/10 min according to m rsk USP.

24-hour summary: POOH with 9 5/8" tie-back casing. Set 14" wearbushing. Performed BOP test. POOH with wbrrt. Picked up 9 5/8" x 14" TSP and RIH with same to 100 m MD.
Hourly activities:
00:00 - 03:30: Pressure tested BOP to 35/345 bar 5/10 min according to m rsk USP.
03:30 - 04:45: Released wbrrt and POOH with same on 5 1/2" HWDP landing string. Re-set tool on surface. Laid down wbrrt on pipe deck. Meanwhile function tested shear ram.
04:45 - 06:00: Picked up 9 5/8" x 14" TSP assembly with simultaneous lift on elevator and deck crane. Inspected seals. Hung off assy in rotary. Removed masterbushing and installed automatic slips. RIH with TSP on 5 1/2" DP to 100 m MD.
06:00 - 10:45: RIH with TSP assy on 5 1/2" DP from 100 m to 2397 m MD. Running speed limited to 2 mins/std.
10:45 - 11:30: Dropped 1 3/4" aluminium ball. Took up/down weights 160/131 MT. Continued to RIH with TSP packer from 2397 m ti 2412 m MD. Applied 10 MT on TSP assy. Pressured up string to 230 bar 440 LPM. Observed pressure for 5 mins. Increased pressure and observed shear at 268 bar.
11:30 - 12:00: Pulled out 4 m and set packer by applying 40 MT on top of PBR. Adjusted weight to 10 MT. Verifed new top of PBR to 2398. 05 m MD.
12:00 - 12:30: Closed UPR, lined up from cement unit to BOP, and pressure tested TSP packer and annulus to 180 bar OK. Volumed pumped 1632 liters.
12:30 - 12:45: POOH with TSP setting tool on 5 1/2" DP from 2408 to 2350 m MD. Observed hydraulic leak on aft PRS.
12:45 - 13:45: Repaired hydraulic leak on aft PRS.
13:45 - 17:30: Continued to POOH with TSP setting tool on 5 1/2" DP from 2350 m to 200 m MD.
17:30 - 18:00: Held toolbox talk. Removed automatic slips from rotary.
18:00 - 19:00: Continued to POOH with TSP setting tool from 200 m MD to surface. Laid down tool in basket on main deck.
19:00 - 21:00: RIH with wbrrt on 5 1/2" HWDP landing string. Latched on to 14" WB at 140 m MD and pulled free with 30 MT overpull. Washed across subsea wellhead with 3000 LPM. POOH with WB/WBRRT on 5 1/2" HWDP landing string.
21:00 - 00:00: Laid down wbrrt. Installed swedge and tested IBOP valves on TDS and standpipe valve to 35/345 bar 5/10 mins. Meanwhile used casing. Loaded, tallied and laid out new casing in STB pipedeck bays. hydraulic hose on topdrive valves on kill manifold to 35/345 bar 5/10 mins.

24-hour summary: RIH with TSP assy and set same with new top of PBR at 2399 m MD. POOH with TSP setting tool. Pulled 14" wearbushing. Backloaded used casing and loaded new casing. Rigged up casing running equipment.
Hourly activities:
00:00 - 03:00: Rigged up casing OWS casing tong. Changed inserts in elevator. Redressed PS-21 slips. Meanwhile used casing. Loaded, tallied and laid out new casing in STB pipedeck bays.
03:00 - 05:30: Backloaded used casing. Loaded, tallied and laid out new casing in STB pipedeck bays. Meanwhile off drillfloor and commenced service on forward PRS
05:30 - 06:00: Had to halt loading casing temporarily. Supply boat island frontier reported trouble which could affect station keeping. Boat pulled away temporarily.
06:00 - 14:00: Loaded, tallied and laid out new 10 3/4" casing in aft STB/PORT bays. Produced running tally. Counted joints on deck. Meanwhile tested choke manifold to 35/345 bar 5/10 mins tested TIW and gray valve to 35/345 bar 5/10 mins
14:00 - 14:30: Broke down TIW and gray valve after pressure testing same.
14:30 - 15:00: Held toolbox talk prior to running 9 5/8" x 10 3/4" tie-back casing. Picked up seal stem assy. Commenced to run in hole with 9 5/8" casing. Got problem closing/functioning elevator. Halted operations to remedy situation.
15:00 - 15:45: Changed hydraulic fitting on BX elevator.
15:45 - 00:00: RIH with 9 5/8" tie-back casing from surface to 374 m MD. Observed high thread torque on several joints. Observed some dry boxes. Had to lay out joint and due to 70 thread torque on jam unit and damaged threads. Used contingency dope lubeseal API mod as required on pin end after joint Average running speed less 4 jnts/hr.

24-hour summary: Loaded, laid out and tallied 9 5/8" x 10 3/4" tie-back casing. Ran 9 5/8" casing to 790 m MD.
Hourly activities:
00:00 - 06:00: RIH with 9 5/8" tie-back casing from 374 m to 798 m MD. Washed pin ends and applied contingency dope as required. Average running speed 6 jnts/hr.
06:00 - 06:45: Changed to 10 3/4" bx3 elevator. Picked up and made up 9 5/8" x 10 3/4" x-over.
06:45 - 07:30: Held toolbox talk. Removed PS-21 slips and changed to 10 3/4" inserts, put slips back in rotary. Repositioned rollers on HTS. Adjusted PDM head.
07:30 - 14:45: Held toolbox meeting prior to running 10 3/4" tie-back casing. Ran 10 3/4" casing from 796 m to 1505 m MD. Average running speed 8 jnts/hr. Experienced problems with HTS conveyer belt.
14:45 - 16:30: Repaired conveyer belt.
16:30 - 20:00: Continued to run 10 3/4" tie-back casing. Average running speed 10 jnts/hr. Monkey arm on HTS jammed in upper position.
20:00 - 20:30: M rsk ET techican fixed problem on software.
20:30 - 00:00: Continued to run 10 3/4" tie-back casing from 1920 m to 2253 m MD.

24-hour summary: None
Hourly activities:
00:00 - 02:15: Picked up 6,05 m 10 3/4" pup joint made up and RIH with same. Changed elveator. Picked up 10 3/4" casing hanger, washed, inspected and doped threads. Made up 10 3/4" casing hanger. Checked tally and counted joints left on deck OK.
02:15 - 03:30: Rigged down casing tong. Removed casing slips. Checked padprt tool.
03:30 - 04:00: RIH with 9 5/8" x 10 3/4" tie-back casing, hanger and padprt tool on 5 1/2" HWDP landing string. Set depth counter at 2385 m MD. Took up and down weights 250/200 MT.
04:00 - 04:30: Brought pumps up to 350 LPM and ran in hole with tie-back casing. Observed pressure increase and loosing weight at 2399 m MD. Stung approx 1 m further in and PBR locator in sealstem sheard out. Total sting in 2,7 m. Landed hanger at 140,1 m MD as per vetco datum.
04:30 - 05:15: Lined up to pump from cement unit up kill line through TDS. Performed low pressure test on sealstinger to 70 bar/10 min OK. Recorded on chart.
05:15 - 06:00: Adjusted block weight to 73 MT. Rotated string 4 turns clockwise to activate padprt tool, observed 8,5" drop as intended. Closed UPR and pressured up above padrt tool to 207 bar to set MS seal OK.
06:00 - 07:30: With UPR closed, pressure tested MS seal from above to 35/345 bar 5 min OK. Released padprt tool according to vetco instructions and POOH with same on 5 1/2" HWDP landing string.
07:30 - 08:45: Flushed lines. Closed shear ram. Pressure tested 9 5/8" x 10 3/4" tie-back casing and sealstem/pbr to 35/345 bar 5/10 min OK. Pumped and bled back a total of 2637 liter, good correspondance with theoretical volume.
08:45 - 10:30: Picked up 10 3/4" lock down sub and RIH on 5 1/2" HWDP landing string to 140 m. Set same according to vetco instruction. Closed UPR and pressure tested lock down sub to 345 bar/10 min.
10:30 - 11:30: POOH with RT on 5 1/2" HWDP landing string.
11:30 - 11:45: Tidied drillfloor and removed casing running equipment for backload.
11:45 - 12:30: Held toolbox talk. Picked up special 9,567" casing drift and RIH with same on 5 1/2" DP to 200 m MD.
12:30 - 17:15: Installed automatic slip. RIH with drift on 5 1/2" DP and drifted well down to 1590 m MD. Observed 1-3 MT drag from 1439 m to 1536 m MD.
17:15 - 20:00: POOH with casing drift on 5 1/2" DP and laid down same.
20:00 - 20:45: Built stand of 5 1/2" HWDP.
20:45 - 00:00: Picked up 10 3/4" GTV plug assembly. RIH with GTV plug on 5 1/2" HWDP/DP to 641 m MD. Measured 2 stands while running in. Took up/down weights 102/98 MT. Set GTV plug by applying clockwise rotation and alernating up down loads. Plug setting depth 641 m MD packer element).

24-hour summary: Tested MS seal. POOH with padprt tool. Tested 9 5/8" x 10 3/4" tie-back casing and PBR/SEAL stem. Ran 10 3/4" hanger lock down sub. Ran 10 3/4" casing drift to 1590 m MD. Installed GTV plug at 641 m MD, tested same from below and above. Prepared for removing diverter and nippling down BOP.
Hourly activities:
00:00 - 02:30: Lined up from cement unit and performed line test to 345 bar/10 min OK. Pressured up below GTV plug through DP and tested to 345 bar/10 min. Pumped 2150 liter with good correpsondance to theroretical volume. Recovered only 1800 liter. Discussed situation. Decided to move ahead with operations.
02:30 - 04:00: Released from GTV plug and pumped 10 m3 hi-vis on top of plug. POOH with GTV plug setting tool on 5 1/2" HWDP/DP. Laid down setting tool.
04:00 - 04:30: Closed shear ram and lined up cement unit to pump in BOP. Pressure tested above GTV plug to 345 bar 10 min OK. Volume pumped bled back 863/830 liters.
04:30 - 05:15: Made up stand of drillpipe. Emptied BOP for water by blowing air down the DP.
05:15 - 06:00: Removed elevator and prepared slings for pulling diverter.
06:00 - 06:45: Continued preparing for releasing and pulling diverter.
06:45 - 07:00: Held toolbox talk prior to pulling diverter.
07:00 - 11:30: Attempted to pull diverter nogo stuck in diverter housing. Removed lid to access lock dogs. Inspected locks and found chunks of metal in cavities, verified lock dogs free to move. Adjusted elevation. Worked diverter up and down. Diverter came free. Lifted out and set down on drillfloor.
11:30 - 12:00: Cleared drillfloor. Transferred claxton tool to drillfloor.
12:00 - 12:15: Held toolbox meeting prior to nippling BOP overshot. Meanwhile worked on FWD PRS.
12:15 - 17:00: Attempted to release lock ring on overshot. Used, c-spanner, chain hoists slings
17:00 - 18:00: Sourced torque tool for relasing flange on top of annular BOP instead of lock ring. Attempted to break bolts on flange negative. Reverted to plan for releasing lock ring. Meanwhile reinforced c-spanners in mechanical workshop and continued work on PRS.
18:00 - 00:00: Worked to release overshot lock ring. Used c-spanner, chain hoists and slings. Meanwhile worked on FWD PRS.

24-hour summary: Removed diverter. Worked on stuck lock ring on overshot joint. Pulled overshot joint. Prepared for skidding BOP.