bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
00:00 - 00:15: Continued RIH on 5" DP from 1890m to 2011m. Tripping speed 484 m/hours.
00:15 - 00:45: Changed handling equipment to 5½".
00:45 - 01:00: Made up to TDS and broke circulation.
01:00 - 01:45: Continued RIH on 5½" DP from 2011m to 2537m. Tripping speed 701 m/hours.
01:45 - 02:30: Serviced TDS prior to entering shoe.
02:30 - 02:45: Continued RIH from 2537m-2609m. At 2609m tag obstruction with 5-8 MT.
02:45 - 04:15: Made up TDS to string and attempted to wash down. Observed pressure rise to 85 bars. Pulled back to 2578m and attempted to circulate. Immediately pressure increased to 44 bars. Monitor for pressured leak off no pressure drop observed. Pulled to 2551m and attempted to circulate. Pressured up to 110bars. Pulled to 2537m and attempted to circulate. Confirmed string plugged by circulating through TDS and down mud bucket line.
04:15 - 05:00: At 2537m, m/u TDS. Rotated string at 100rpm while applying pressure in 50bars increments. At 220bars pressure dropped off to 60bars. Increased flow rate and took roadmap pressures verses flow readings.
05:00 - 06:00: Washed down from 2537m to 2656m. 20 RPM, 6-9knm torque, 69-92bar
06:00 - 07:30: Continued RIH with 5½ DP washing down 1000 LPM 20 RPM. From 2820m to 2860m.
07:30 - 08:30: Continued RIH from 2860m to 3021m. Broke circulation after 5 stds at 2981m. Took weight at 2999m, increased rate to 1000lpm, 20rpm. Continued to RIH without washing down from 3021m to 3142m.
08:30 - 14:00: Took weight at 3142m take weight, increased rate to 1000lpm 20rpm. Continued to wash hole from 3142m to 4097m 1000lpm 20rpm. Tagged bottom at 4097m.
14:00 - 16:30: Picked up 5m and conditioned to even mud weight 1. 35 SG, 2000 LPM. Simultaneously held tool box talk prior to perform cement job.
16:30 - 16:45: Pressure tested line from cement unit to standpipe manifold, 200bars.
16:45 - 17:00: Pumped 7m 1. 60 SG spacer, chased with 2,6m OBM, 30 RPM 14 KNM.
17:00 - 17:45: Pumped 9. 45m 1,90 SG silica cement slurry at 800 LPM. 50bars, 20 RPM 14 KNM.
17:45 - 18:15: Displaced cement with rig pumps 36. 9m 2000 LPM 30 RPM.
18:15 - 19:00: POOH from 4092m to 3923m. Pulled wet.
19:00 - 21:00: M/u TDS and circulated bottoms up at 2000lpm, 179bars. Observed cement in returns.
21:00 - 21:45: Pumped 7 m of 1. 6 SG spacer. Chased with 2. 6 m of 1. 35 OBM. 30 RPM, 800 LPM, 14-16knm.
21:45 - 22:15: Mixed and pumped 9. 5 m 1. 90 SG cement slurry, 800 LPM, 50 bar, 30 RPM and 14 KNM. 1st plug, 2nd stage).
22:15 - 22:45: Displaced cement with 34. 98 m 1. 35 SG mud at 2000 LPM, 70 RPM, after 290 stks pressure increased from 0 to 129 bars 146 bars.
22:45 - 00:00: POOH from 3923m to 3700m. Pulled wet.

24-hour summary: RIH w/ cement stinger to TD 4097m. Had to wash in hole. Set first cement plug in two stages from 4092m to 3923m and 3923m to 3750m. Set 18m hi-visc pill. Circulated buttoms up at 3330m.
Hourly activities:
00:00 - 01:45: Continued POOH and lay out 3½" DP from 250 to surface. Pulling speed 143 m/hours.
01:45 - 02:15: Cleared and cleaned rig floor.
02:15 - 03:00: Prepared to pick up BHA removed auto slips, installed masters and bowls, dressed elevators, turned PDM and changed roughneck dies.
03:00 - 03:30: Due to wind at 50 knots no crane operation. Evaluated picking up BHA with PDM no go due to lengths and components of tubulars.
03:30 - 06:00: Waited on weather. Wind 50 kts plus. Performed general maintenance.
06:00 - 14:30: Wow. Wind to high for deck crane to operate. Meanwhile prepared alternative solution to transport BHA to drill floor without using the deck crane. Wind 40-50 knots. Performed PM and house keeping.
14:30 - 16:45: Held tool box talk regarding alternative option of picking up the BHA from cantilever with the PDM. Prepared paper work and equipment for picking up the BHA with the PDM.
16:45 - 00:00: Held tool box talk and picked up and made up 8½" BHA from cantilever. RIH from surface to 43m.

24-hour summary: Wow. MU 8½" BHA and RIH from surface to 1240m
Hourly activities:
00:00 - 02:00: Continued making up 8½" BHA. RIH from 43m to 100m. Inserted the radio active source.
02:00 - 02:30: Installed auto slips and function test same.
02:30 - 03:15: RIH with 8½" BHA on 5" DP from 100m to 588m. Tripping speed 650 m/hours. Extra time taken to pick/engage the 5" DP from the derrick due to high winds causing the 5" to rattling in the derrick.
03:15 - 04:00: Installed x/o on string and made up to TDS. Broke circulation and pumped 1300 LPM 43 bar. Performed shallow test of schlumberger tools. OK.
04:00 - 04:45: Continued RIH with 8½" BHA on 5" DP from 588m to 1198m. Tripping speed 813 m/hours. Extra time taken to pick/engage the 5" DP from the derrick due to high winds causing the 5" to rattling in the derrick.
04:45 - 06:00: Changed to 5½" handling equipment. Made up to TDS and filled the pipe.
06:00 - 09:00: Continued RIH with 8½" BHA on 5½" DP from 1198m to 2560m. Tripping speed 454 m/hours. Filled the pipe every 600m.
09:00 - 17:15: Washed down from 2560m to 3072m tagged hard cement at 3072m set down 4 MT. Parameters flow 1400-1500 LPM at 60 RPM. Obstruction from 2835m to 2944m, took weight up to 5 MT. Worked down with various rates from 300 to 1760 LPM.
17:15 - 00:00: Drilled and attempted to kick off cement from 3072m to 3090m. Parameters flow 2140 LPM SPP 145 bars string RPM 130 TQ 13 KNM wob 2-3 ECD 1. 38 EMW mud weight 1. 34 SG ROP 1,5 mph. Up weight 155 MT down weight 140 MT free rotational weight 149 MT. Cement in returns 60 70

24-hour summary: RIH with 8½" BHA from 1240m to 2560m. Wash down from 2560m to 3072m set down 4 MT firm cement. Attempted to kick of the cement with low drilling parameters. Increased drilling parameters and washed down from 3090 to 3141m. 60-80 cement in returns.
Hourly activities:
00:00 - 03:00: Continued drilling and attempted to kick off from 3090m to 3095m. Parameters flow 2140 LPM SPP 145 bars string RPM 130 TQ 13 KNM wob 2-3 ECD 1. 39 EMW mud weight 1. 34 SG ROP 1-3 mph. Cement in returns 70 80
03:00 - 06:00: Continued drilling and attempted to kick off from 3095m to 3141m. Increased parameters flow 2140 LPM SPP 140-150 bars string RPM 150 TQ 13-15 KNM wob 2-3 ECD 1. 39 EMW mud weight 1. 34 SG ROP 10-40 mph. Cement in returns 80
06:00 - 07:15: Continued drilling 8½" hole from 3141m to 3185m. Drilling parameters flow 2140 LPM SPP 142 bars string RPM 130 TQ 15-22 KNM wob 3-5 ECD 1. 4 EMW mud weight 1. 34 SG ROP 40 mph.
07:15 - 12:15: Kicked off at 3185m and drilled 8½" hole to 3210m 50/50 cement/formation. Drilling parameters flow 2140 LPM SPP 144 bars string RPM 130 TQ 12-26 KNM wob 2-5 ECD 1. 4 EMW mud weight 1. 34 SG ROP 4-6 mph.

24-hour summary: Drilled 8½" hole from 3141m to 3185m and kicked off at 3185m continued drilling to 3210m 50/50 cement/formation.
Hourly activities:
12:15 - 00:00: Drilled 8½" hole from 3210m to 3401m. Drilling parameters flow 2140 LPM SPP 142-157 bars string RPM 130 TQ 15-20 KNM wob 3-8,5 ECD 1. 42 EMW mud weight 1. 34 SG ROP 20-30 mph.

24-hour summary: Drilled 8½" hole from 3210m to 3473m. Took pressure points.
Hourly activities:
00:00 - 00:45: Continued drilling 8½" hole from 3400m to 3416m. Drilling parameters flow 2140 LPM SPP 157 bars string RPM 130 TQ 16-20 KNM wob 4-9 ECD 1. 42 EMW mud weight 1. 34 SG ROP 30 mph.
00:45 - 01:00: Circulated hole clean prior to take pressure points, reciprocating the string. Simultaneously held tool box talk prior to take pressure points.
01:00 - 01:15: Performed sticky test. 5min PU 192 MT so 136 MT. 10min PU 195 MT so 136 MT
01:15 - 03:30: Correlation log from 3416m to 3411m. Took pressure points MD probe TVD reservoir press. Mud hydrostatic pressure gradient 3378m 2933. 5m no test 3377m 2932. 8m 297. 7 bars 385. 5 bars 1. 035 SG 3374m 2930. 9m 297. 8 bars 385. 3 bars 1. 036 SG 3370. 5m 2928. 7m no test
03:30 - 06:00: Continued drilling 8½" hole from 3416m to 3473m. Drilling parameters flow 2140 LPM SPP 156 bars string RPM 130 TQ 17-18 KNM wob 2-7 ECD 1. 42 EMW mud weight 1. 34 SG ROP 30 mph.
06:00 - 07:00: Continued drilling 8½" BHA hole from 3473m to 3497m Drilling parameters flow 2140 LPM SPP 156 bars string RPM 130 TQ 17-18 KNM wob 2-7 ECD 1. 42 EMW mud weight 1. 34 SG ROP 30 mph.
07:00 - 10:15: Circulated well clean reciprocating drill string 3000lpm, 140 RPM and 254 bars.
10:15 - 10:45: Flow checked well well static. Simultaneously held tool box talk prior to POOH pumping.
10:45 - 15:30: POOH with 8½" BHA pumping from 3497m to 2531m, 1000lpm 25-40 bars. Pulling speed 203 m/hours. Leak in kelly hose connection.
15:30 - 16:15: Held tool box talk prior to repair the kelly hose. Greased auto slips, installed TIW Cleared and cleaned the rig floor. Circulated over the t/t.
16:15 - 19:00: Repaired the kelly hose, o-ring bursted changed out same.
19:00 - 19:15: Held tool box talk prior to slip and cut drill line.
19:15 - 22:30: Slip and cut drill line.
22:30 - 22:45: Held tool box talk prior to POOH with 8½" BHA. Simultaneously pumped 3. 9m 1. 60 SG slug.
22:45 - 00:00: POOH with 8½" BHA on 5½" DP from 2531m to 2210m. Pulling speed 458 m/hours. Filled trip tank.

24-hour summary: Drilled to TD 3498m. Circulated hole clean. POOH with 8½ BHA to shoe at 2531m. Slip cut drill line. Continued POOH with 8½" BHA and laid out same.
Hourly activities:
00:00 - 01:30: Continued POOH with 8½" BHA from 2210m to 1197m. Pulling speed 810 m/hours.
01:30 - 01:45: Changed over to 5" handling equipment.
01:45 - 03:00: Continued POOH with 8½" BHA on 5" DP from 1197m to 139m. Pulling speed 846 m/hours.
03:00 - 03:15: Flow checked well well static. Simultaneously held tool box talk prior to pull out and lay out 8½ BHA.
03:15 - 06:00: Pulled out and laid out 8½" BHA. Laid out BHA.
06:00 - 07:00: Broke and laid out 8 1/2" drilling BHA.
07:00 - 07:15: Held toolbox talk handover meeting.
07:15 - 07:45: Removed excess equipment and BHA from drillfloor. Cleaned and tidied drillfloor.
07:45 - 08:45: Prepared fro picking up 3 1/2" DP. Changed dies in IR. Inserted auto slips. Installed rollers and function tested HTS.
08:45 - 11:15: RIH with 3 1/2" DP singles from surface to 231 m MD.
11:15 - 12:00: Suspended tripping temporarily for conducting weather critical lifts to cantilever. Lifted 12 1/4" drilling BHA from main deck to cantilever.
12:00 - 12:30: RIH with 3 1/2" DP singles from 231 m to 300 m MD.
12:30 - 13:00: Changed from 3 1/2" to 5" handling gear.
13:00 - 14:15: RIH with 5" DP from 300 m to 1033 m MD. Reduced trippping speed due to winds in excess of 50 knots. Tripping speed 590 m/hrs.
14:15 - 14:45: Changed from 5" to 5 1/2" handling gear.
14:45 - 17:00: RIH with 5 1/2" DP from 1033 m to 13 3/8" shoe depth at 2562 m MD. Tripping speed 680 m/hrs.
17:00 - 00:00: Made up TDS. RIH with 5 1/2" DP from 2562 m to 3332 m MD while washing down at 1500 LPM on each stand. Observed occasional hang-ups and plugging tendencies and adjusted tripping speed accordingly. Tripping/washing speed 110 m/hrs.

24-hour summary: Laid out 8 1/2" drilling BHA. RIH with 3 1/2" x 5" x 5 1/2" string for p&a cementing. Washed down from 13 3/8" shoe to TD when tripping in. Tagged TD at 3498 m MD. Circulated and condtioned mud. Pumped spacer and cement and displaced same with OBM. POOH with 5 stands dry to 3280 m MD. POOH to 3196 m MD.
Hourly activities:
00:00 - 00:45: POOH with 5" DP from 951 m to 299 m MD. Tripping speed 870 m/hrs.
00:45 - 01:00: Changed from 5" to 5 1/2" handling equipment.
01:00 - 01:15: Held toolbox talk for laying out 3 1/2" DP singles.
01:15 - 03:30: POOH with 3 1/2" DP singles from 299 m MD to surface. Laid out singles on deck. Tripping speed 133 m/hrs.
03:30 - 04:30: Cleared and tidied drillfloor. Changed die carriers in IR. Removed auto slips.
04:30 - 06:00: Waited on weather. Winds 40 knots cranes down. Meanwhile changed pneumatic control valve on TDS.
06:00 - 10:45: Waited on weather. Winds 40 knots. Meanwhile worked on TDS pneumatic valve. Planned for making up BHA using PDM, HTS and rollers.
10:45 - 16:45: Picked up 12 1/4" powerdrive exceed with PDM and slings. Placed powerdrive on rollers and rolled onto HTS. Picked up powerdrive from HTS and hung off same in rotary. Picked up powerpulse with PDM and slings and placed same onto roller sections. Rolled powerpulse onto HTS. Picked up arc with PDM. Made up arc to powerpulse using chaintongs while still laying on rollers/hts. Rolled BHA onto HTS. Picked up and made up powerpulse/arc to powerdrive. Picked up and made up 2 ea NMDC. Made up jar/dc stand. Made up stand of 8 1/4" DC. Installed totco ring. Made up xover to 5 1/2" HWDP.
16:45 - 17:30: Installed automatic slips in RT. RIH with 12 1/4" BHA on 5 1/2" HWDP from 100 m to 286 m MD.
17:30 - 18:00: RIH with 12 1/4" BHA on 5 1/2" DP from 286 m to 609 m MD.
18:00 - 19:15: Filled string. Tested MWD at 2400 LPM SPP 91 bar OK.
19:15 - 19:30: RIH with 12 1/4" BHA on 5 1/2" DP from 609 m to 730 m MD.
19:30 - 20:30: Obtained favoruable wind conditions for manriding. Serviced PRS and TDS.
20:30 - 21:30: RIH with 12 1/4" BHA from 730 m to 1374 m MD. Tripping speed 444 m/hrs.
21:30 - 22:00: Set up for drifting pipe that was not wiped/cleaned after cementing.
22:00 - 00:00: RIH with 12 1/4" BHA on 5 1/2" DP from 1374 m to 1859 m MD. Drifted every stand by dropping drift in derrick. Tripping speed 243 m/hrs.

24-hour summary: Waited on weather. Made up 12 1/4" drilling BHA and RIH with same to 2103 m MD. Washed down from 2103 m to 2440 m MD with 2000 LPM no wob.
Hourly activities:
00:00 - 01:00: RIH with 12 1/4" BHA on 5 1/2" DP from 1859 m to 1980 m MD. Drifted every stand by dropping drift in derrick. Filled pipe. Winds in derrick 60 knots. Abandoned drifting in derrick. Discussed situation. Decided to drift by installing kelly cock in the string.
01:00 - 01:45: Installed kelly cock in string and closed same. RIH with 5 stand of 5 1/2" DP from 1980 m to 2181 m MD. Filled 500 l OBM in string and dropped drift.
01:45 - 02:30: POOH with 5 stands of 5 1/2" DP from 2181 to 1980 m MD. Broke kelly cock and recovered 2 3/4" drift.
02:30 - 03:30: RIH with 12 1/4" BHA on 5 1/2" DP from 1980 to 2103 m MD.
03:30 - 06:00: Made up TDS. Washed down from 2103 m MD to 2440 m MD. Parameters 2000 LPM SPP 90 bar/ 30 RPM torque 10 KNM. No wob.
06:00 - 06:45: Washed down from 2440 m to 2490 m MD. Parameters 2000 LPM SPP 90bar 30 RPM torque 10 KNM. Tagged top of cement at 2490 m MD. Turned off pumps and stopped roatation. Load tested top of cement with 7 MT OK.
06:45 - 09:30: Drilled cement in 13 3/8" casing from 2490 m to 2504 m MD. Drilling parameters 3000 LPM SPP 162 bar 60 RPM torque 14-18 KNM wob 1-3 MT. Limited ROP to 5 m/hrs due to processing cement cuttings in DCI and mud displacement. Displaced from 1,35 SG to 1,25 SG OBM while drilling stand.
09:30 - 15:00: Drilled cement in 13 3/8" casing from 2504 m to shoe depth at 2562 m MD. Drilling parameters 3000 LPM SPP 161 bar 60 RPM torque 14-18 KNM wob 1-5 MT. Controlled ROP to 10-15 m/hrs.
15:00 - 16:15: Encountered problem with DCI system excessive solids bulid up in mill tank. Picked off bottom to 2554 m MD and circulated at 500 LPM SPP 8 bar 15 RPM while working on DCI system.
16:15 - 16:30: Reamed back to 2562 m MD. Drilled 12 1/4" section from 2562 m to 2566 m MD. Drilling parameters 3000 LPM SPP 164 bar 60 RPM torque 18 KNM wob 4 MT. Controlled ROP to 20 m/hrs.
16:30 - 22:00: Pulled back to 2559 m MD. Downlinked powerdrive. Drilled 12 1/4" section from 2566 m to 2575 m MD. Drilling parameters 3000 LPM SPP 160 bar 80 RPM torque 16 KNM wob 2-3 MT. Controlled ROP to 2 m/hrs. drililling). Obtained 50/50 formation/cement shows in sample at 2575 m MD. Transferred operations to f-15 a

24-hour summary: Washed down from 2440 m and tagged cement at 2490 m MD. MD. Displaced from 1,35 SG ot 1,25 SG OBM. Drilled cement from 2490 m to 2566 m MD. Initiated kick off and drilled 12 1/4" section down to 2575 m MD.
Hourly activities:
22:00 - 00:00: Drilled and oriented 12 1/4" hole section from 2575 m to 2579 m MD. Drilling parameters 3000 LPM SPP 160 bar 80 RPM torque 16 KNM wob 1-3 MT. Controlled ROP to 2 m/hrs drililling). Routed returns to bigbag/ibc due to washout in DCI piping.

24-hour summary: None
Hourly activities:
00:00 - 02:30: Drilled and oriented 12 1/4" section from 2579 m to 2585 m MD. Drilling parameters 3000 LPM SPP 157 bar 130 RPM torque 18 KNM wob 2 MT. Controlled ROP to 2 m/hrs drililling). Routed returns to skips due to washout in DCI low pressure piping.
02:30 - 03:30: Pulled back into at 2545 m MD. As permitted by weather condtions, performed ciritical maintenance of TDS and PRS. Disconnected hose on cement standpipe for troubleshooting blockage on hose. Meanwhile perfomed cleaning of DCI mill tank.
03:30 - 04:30: Excess time used on service on TDS and PRS. RIH to TD at 2585 m MD.
04:30 - 06:00: Downlinked powerdrive. Drilled and oriented 12 1/4" section from 2585 m to 2590 m MD. Drilling parameters 3000 LPM SPP 160 bar 130 RPM torque 20 KNM wob 1-5 MT ECD 1,28. Controlled ROP to 10 m/hrs as dictated logistic challenges weather conditions. Meanwhile performed cleaning/repairs in DCI system.
06:00 - 12:45: Drilled and oriented 12 1/4" hole section from 2590 m to 2663 m MD. Drilling parameters 3000 LPM SPP 160 bar 80-130 RPM torque 20-24 KNM wob 2-7 MT ECD 1,29. Stepped up ROP in incrememts from 10 to 25 m/hrs as dictated by cuttings handling.
12:45 - 14:00: At 2663 m MD, got problems with powerdrive not able to maintain toolface/steering. Pulled out to 2654 m MD and downinked powerdrive in attempt to regain steering.
14:00 - 14:15: Drilled ahead to 2665 m MD prevailing problems in maintaining toolface with powerdrive.
14:15 - 15:15: Reciprocated on stand whilst discussing situation with town. Decided to POOH to change powerdrive.
15:15 - 15:30: Flow checked well prior to POOH well static.
15:30 - 15:45: Pumped 5 m3 1,57 SG slug. Allowed mud level to settle.
15:45 - 16:15: POOH with 12 1/4" drilling BHA on 5 1/2" DP from 2565 m to 2464 m MD. Open hole tripping speed 200 m/hrs.
16:15 - 18:00: POOH with 12 1/4" drilling BHA on 5 1/2" DP from 2464 m to 609 m MD. Tripping speed 1280 m/hrs.
18:00 - 18:15: Flowchecked prior to pulling BHA well static. Observed slack hoist wire on PRS.
18:15 - 20:15: Troubleshot slack wire on PRS. Found mismatch on tension cyclinders rectified problem.
20:15 - 21:15: POOH with 12 1/4" drilling BHA on 5 1/2" HWDP from 609 m to 107 m MD.
21:15 - 21:30: Held toolbox talk for installing bushings.
21:30 - 22:00: Removed auto slips. Installed masterbushing and bowl.
22:00 - 00:00: POOH with 12 1/4" BHA. Racked back BHA in derrick. Broke out powerdrive. Broke bit using rig tongs.

24-hour summary: None
Hourly activities:
00:00 - 01:15: Laid down powerdrive. Picked up back-up powerdrive. Made up 12 1/4" bit. Hung off powedrive in rotary.
01:15 - 02:30: Made up and RIH with 12 1/4" BHA to 107 m MD.
02:30 - 02:45: Removed masterbushing. Installed auto slips.
02:45 - 03:30: RIH with 12 1/4" drilling BHA on 5 1/2" HWDP/DP from 107 m to 606 m MD.
03:30 - 04:00: Fiilled pipe and performed shallow test of powerdrive and MWD OK. Performed kick-drill.
04:00 - 06:00: RIH with 12 1/4" drilling BHA on 5 1/2" DP from 606 m to 1697 m MD. Filled pipe every 500 m tripping in. Tripping speed 545 mhrs.
06:00 - 08:00: RIH with 12 1/4" drilling BHA on 5 1/2" DP from 1697 m to 2626 m MD. Filled pipe every 500 m. Tripping speed 465 m/hrs.
08:00 - 08:30: Made up TDS. Washed down last stand at 2000 LPM SPP 80 bar.
08:30 - 18:00: Drilled and oriented 12 1/4" hole section from 2665 m to 2755 m MD. Downlinked powerdrive and took surveys at connections as instructed by DD/MWD. Drilling parameters 3200 LPM SPP 180 bar 65-130 RPM torque 18-24 KNM wob 2-8 MT ECD 1,28. Linited ROP to 10 m/hrs due limited processing capacity and ongoing work on DCI. Full capacity of DCI regained at 18 00.
18:00 - 00:00: Drilled and oriented 12 1/4" hole section from 2745 m to 2790 m MD. Drilling prameters 3200-3400 LPM SPP 175-195 bar 130 RPM torque 18-24 KNM wob 2-9 MT ECD 1,27. ROP 3-8 m/hrs as determined by geology. Experienced high stick/slip and low ROP from 2770 m MD 100 limestone shows at 2780 m MD. Performed kick drill.

24-hour summary: RIH with 12 1/4" BHA from 1697 m to 2665 m MD. Drilled 12 1/4" hole section from 2665 m to 2818 m MD.
Hourly activities:
00:00 - 06:00: Drilled and oriented 12 1/4" hole section from 2790 m to 2818 m MD. Drilling parameters 3400 LPM SPP 180 bar 130-160 RPM torque 20-26 KNM wob 5-9 MT ECD 1,27. ROP 2-8 m/hrs as determined by geology. Experienced high stick/slip when drilling chalk.
06:00 - 13:30: Drilled 12 1/4" hole section from 2818 m to 2853 m MD. Drilling parameters 3400 LPM SPP 194 bar 150-180 RPM torque 23-29 KNM wob 10-12 MT ECD 1,27. ROP 3-8 m/hrs as determined by geology and stick/slip. Lost return flow and standpipe pressure.
13:30 - 16:00: Observed lost return to pit and falling standpipe pressure. Picked off bottom and reciprocated stand from 2827 m to 2841 m MD 10 RPM. No drop in active, annulus full, i. E. No downhole losses detected. Ivestigated situation. Inspected lines from pit to TDS, found no leakages. Closed IBOP and attmepted to pump, found that problem was related to the surface system.
16:00 - 19:00: Lined up cement unit to circulate on well. Circulated in well at set intervalls using cement unit pumping at 1200 LPM SPP 26 bar. Reciprocated stand and rotated 10 RPM. Monitoed well on trip tank when not pumping well static. Performed troubleshooting on pumps and circulation system.
19:00 - 21:15: Found likely cause of problem to be blocked splitter valve in suction module. Not able to use pit#7 as active pit. Lined up to pump from pit taking retuns to pit and and used mixpump for levelling the two pits. Stepped up pumprate to 3400 LPM and RIH to 2853 m MD.
21:15 - 00:00: Drilled 12 1/4" hole section from 2853 m to 2865 m MD. Drilling parameters 3400 LPM SPP 194 bar 150-180 RPM torque 24-27 KNM wob 6-8 MT ECD 1,28. ROP 2-6 m/hrs as determined by geology.

24-hour summary: Drilled 12 1/4" section from 2818 m to 2853 m MD. Lost standpipe pressure and returns. Troubleshot situation, blockage in suction manifold. Re-arranged active sytem. Drilled 12 1/4" section from 2853 m to 2896 m MD.
Hourly activities:
00:00 - 06:00: Drilled 12 1/4" hole section from 2865 m to 2896 m MD. Drilling parameters 3400 LPM SPP 198 bar 150-180 RPM torque 24-27 KNM wob 6-8 MT ECD 1,28. ROP 4-7 m/hrs as determined by geology.
06:00 - 09:15: Drilled 12 1/4" hole from 2896 m to section TD at 2920 m MD. Drilling parameters 3400 LPM SPP 195 bar 180 RPM torque 28-32 KNM wob 3-5 MT ECD 1,28. ROP 4-7 m/hrs as determined by geology.
09:15 - 12:30: Circulated hole clean prior to POOH, reciprocated string between 2920 m and 2908 m MD. Parameters 3400 LPM SPP 199 bar 150 RPM torque 22-26 KNM ECD 1,28.
12:30 - 12:45: Flow checked well static.
12:45 - 16:00: Broke off TDS. Dropped gyro. Made ut TDS and pumped gyro down string. Observed mud leakage from TDS, washpipe leaking. Pumped 5 m3 1,55 SG slug. Performed rotational gyro survey as instucted by gyrodata.
16:00 - 17:00: POOH with 12 1/4" BHA on 5 1/2" DP from 2904 m to 2545 m MD.
17:00 - 21:00: Secured well with kelly cock-. Lowered TDS work platform. Changed washpipe. Installed test swadge on TDS.
21:00 - 21:30: Tested washpipe and standpipe to 345 bar 10 min OK. Broke swadge.
21:30 - 00:00: Filled trip tanks. POOH with 12 1/4" drilling BHA on 5 1/2" DP from 2545 m to 1132 m MD. Tripping speed 565 m/hrs. Meanwhile mounted riser cradles and laid out casing.

24-hour summary: None
Hourly activities:
00:00 - 02:15: POOH with 12 1/4" drilling BHA on 5 1/2" DP from 1132 m to 109 m MD. Tripping speed 455 m/hrs. Meanwhile mounted riser cradles and lifted riser tension jonit pup joint to cradle.
02:15 - 03:00: Flowchecked prior to pulling BHA well static. Checked dies on PRS. Held toolbox talk for manual handling. Removed PS-21 auto slips. Installed masterbushing and bowls.
03:00 - 05:30: POOH with 12 1/4" BHA from 109 m MD to surfcae. Broke stand of 5 1/2" HWDP for acccess to gyro. Retrieved gyro. Made up HWDP stand and racked back same. Broke and racked back jar/dc stand in derrick. Broke and laid out 2 ea NMDC. Broke and laid out arc, MWD and powerdrive xceeed.
05:30 - 06:00: Cleared and tided drilfloor. Lifted bhas to baskets on maindeck.

24-hour summary: None