bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
00:00 - 06:00: Drilled 8 1/2" hole from 3125m to 3212m. Increased controlled ROP to 30 mph and staged circulation rate up to 2000 LPM. ECD 1. 61-1. 62 SG.
06:00 - 09:30: Drilled 8 1/2" hole from 3212m to 3268m at controlled ROP of 20-30 mph, circulating rate of 2000 LPM. No abnormal torque or drag indications. ECD tending to increase.
09:30 - 10:30: Circulated bottoms up and until shakers cleaned up at 2000 LPM. No losses. ECD decreased from 1. 62 SG to 1. 60 SG.
10:30 - 11:00: Drilled 8 1/2" hole from 3268m to 3272m.
11:00 - 13:30: At 3272 meters started losing mud at 20-30 m3/hr. Picked up from bottom no unusual drag. Reduced pump rate to 800 LPM. Still losing mud. Quit circulating and monitored annulus on trip tank. Hole staying full. Staged pumps to 600 LPM where mud losses resumed. Racked back 1 stand. Reduced rate to 300 LPM with full returns. Mixed LCM pill.
13:30 - 14:00: Worked string with reduced pump rate while mixing LCM pill. Began experiencing erratic torque and losses of 12 m3/hr. Picked up to 3248m where complete returns were lost and pipe stuck no returns, no no rotation, no reciprocation possible.
14:00 - 00:00: Attempted to RIH no go. Jarred down with no progress. Jarred and worked drill string up from 3248m to 3241m. Initially attained rotation and a window of a few meters pipe reciprocation but lost it again. Continued jarring and working string. Hole standing full no gains, no losses. Attempted circulation with no success.

24-hour summary: Drilled 8 1/2" hole from 3212m to 3272m. Began losing mud returns. Pipe started sticking. Worked and jarred pipe to 3241 where no further progress could be made. Rigged up to run stringshot to backoff pipe.
Hourly activities:
00:00 - 02:00: Continued jarring and working pipe up and down with no success. Hole continued to stand full with no gains or losses. Mud lost for the day 55. 3 m3.
02:00 - 06:00: Rigged up atlas to run stringshot to backoff drill string.
06:00 - 17:00: Finished rigging up atlas wireline to run backoff tool string through top drive. Had to re-rig sheaves because of high drag on the logging cable. Atlas RIH checking up weights every 500m.
17:00 - 18:00: Top drive would not rotate. Investigated problem and corrected same.
18:00 - 19:30: Worked 32,000 ft. X lbs. And 20 turns right hand torque into string. Released right hand torque and worked it out of drill string. Drill string inadvertently backed off while working left turns in at 25,000 ft. X lbs.
19:30 - 22:00: Atlas POOH to 150 m just below wellhead. Collar locator indicated drill pipe backed off at 297m. Screwed back into drill string.
22:00 - 00:00: Atlas continued POOH with backoff tool string and r/d same.

24-hour summary: R/u atlas to run backoff tool through top drive. Atlas RIH. Backed off DP too high below wellhead)while applying left hand torque. R/d backoff string. Screwed into DP. R/u and ran severence charge.
Hourly activities:
00:00 - 06:00: R/u jrc severence charge on atlas wireline. Atlas RIH.
06:00 - 09:00: Applied 50 tons overpull and 32,000 ft x lbs right torque in DP. Positioned 2 5/8" severence charge at connection of first jt. Of HWDP above jar would not pass through jar). Fired charge no indication at surface that it fired, either from atlas ampmeter or tension/torque on drill string. Atlas POOH charge found to be fired.
09:00 - 09:30: Worked pipe free with 20-25k ft x lbs torque and 100 tons overpull.
09:30 - 13:00: Worked pipe out of hole from 3164m to 3000m. Rotating 60-100 RPM w/ 15-20k ft x lbs. Occasionally attempted to break circulation partial returns for a short period only. Pressure trapped on DP when pump shut down. Pumped to fill hole while pulling pipe. Could not work pipe back down hole.
13:00 - 15:30: Worked pipe from 3000m to 2996m. Conditions deteriorated no progress from 2996m with 25k ft x lbs torque and 120 tons overpull.
15:30 - 17:00: Pipe started moving up with 170 tons overpull. Continued pulling to 2950m where overpull returned to normal.
17:00 - 19:00: Pumped slug and POOH to above casing window. No losses hole fill normal.
19:00 - 20:00: Rigged down atlas and rig sheaves from derrick and top drive. Meanwhile circulated bottoms up at maximum 2000 LPM no losses. Maximum gas 40 from wellhead area.
20:00 - 00:00: Finished POOH. Found HWDP joint to have been severed in the connection at the top of the pin. Tool joint belled out to over 8. 5" od made it difficult to gauge exactly). Left in hole(as expected) stab, navidrill, stab, XO sub, MWD including mdp and dpr subs, saver sub, 3 x HWDP, jar, 1 x HWDP. Top of fish 3164m.

24-hour summary: Cut drill string at 3164m. POOH tight to 2950m. P/u cleanout assembly and RIH.
Hourly activities:
00:00 - 06:00: M/u cleanout assembly and RIH. Hole filling OK. Total mud lost for the day 1. 75 m3
06:00 - 10:30: Continued RIH to 2100m. Conditioned mud at 1800 LPM full returns. RIH to 2600m. Filled pipe and broke circulation. RIH to 2835m. Took weight.
10:30 - 12:30: Could not work pipe down past 2835m. Broke circulation and washed and reamed from 2835m to 2935m. 1800 LPM, full returns. Excessive cuttings at shakers.
12:30 - 14:30: Circulated bottoms up while moving pipe. Pumping 1800 LPM with full returns. Excessive amounts of cuttings at shakers. MAX ECD 1. 65 SG. Continued circulating at 1800 LPM until ECD reduced to 1. 61 SG. Circulated total of 2 x bottoms up still excessive fresh cuttings.
14:30 - 19:00: Washed down from 2935m to top of fish at 3161m. High torque in places, otherwise met little resistence. Meanwhile raised mud weight from 1. 49 SG to 1. 52 SG. Cuttings/cavings decreased. ECD increased from 1. 61 SG to 1. 64 SG. Slight losses approx. 2 m3/hr while circulating at 1800 LPM.
19:00 - 20:00: Circulated bottoms up. At 1800 LPM some loss detected 3-6 m3/hr. ECD 1. 62 1. 64 SG. No excess cuttings at bottoms up.
20:00 - 23:00: Flowchecked slight gain, rate of gain falling. Began POOH. Normal drag to 3087m. Tight hole 3087m to 3025m required as much as 50 tons overpull. Tight at 3006m and 2996m to 2986m where drag returned to normal. Hole did not take correct fill. Cont. POOH to 2967m. Broke circulation with 900 LPM, full returns. Pumped slug.
23:00 - 00:00: Continued POOH. Normal drag, hole fill correct.

24-hour summary: Continued RIH with cleanout assembly. Washed and reamed to top of fish. Excessive cuttings raised mud weight from 1. 49 SG to 1. 52 SG. Slight losses. POOH to p/u cement stinger for sidetrack plug.
Hourly activities:
00:00 - 04:30: Continued POOH. Normal drag, hole fill correct.
04:30 - 06:00: Began RIH with cement stinger to set sidetrack plug. Total mud lost today 11 m3.
06:00 - 13:00: Continued RIH with 3 1/2" cement stinger from 315m to 2826m. Broke circulation and conditioned mud at 1000m, 2100m, and 2600m. Full returns at 500 LPM. Took weight at 2826m.
13:00 - 15:00: Washed down from 2827m to 2887m with 500 LPM and full returns. RIH from 2887m to 3050m. Washed down from 3050m due to backflow up drill pipe. Washed to 3161m with 500m LPM and full returns.
15:00 - 16:30: Started to circulate bottoms up from 3161m. Experienced losses of 6 m3/hr circulating at 500 LPM, 2. 5 m3/hr at 350 LPM, no losses at 250 LPM. Shut down pumps. Slowly gained back 3. 8 m3. Had lost 16. 3 m3 net loss 12. 5 m3. No unusual hole drag experienced.
16:30 - 18:30: POOH with cement stinger from 3161m to 3035m. Staged pumps up to 400 LPM with 12 m3/hr losses, 300 LPM with 10 m3/hr losses, no losses at 250 LPM. Rig pumped 5 m3 1. 69 SG spacer at 250 LPM. Normal hole drag.
18:30 - 22:00: Lined up halliburton and tested lines to 100 bar. Mixed and pumped 7. 3 m3 1. 95 SG cement and 9 m3 1. 69 SG spacer. Lost 1. 5 m3 mud. Lined up rig pump and displaced cement to balance with 23. 7 m3 mud no returns all pumping done at 250 LPM until cement passed stinger then 200 LPM. Gained 18 bar pump pressure after cement passed stinger.
22:00 - 00:00: Started POOH. Gained mud from DP and annulus 11 m3 total while POOH to 2560m. Gain very small at 2560m. Pumped slug. Normal hole drag

24-hour summary: RIH with cement stinger. Washed to bottom and circulated with reduced pump rate to maintain returns. Set sidetrack plug. POOH. P/u steerable drilling assembly.
Hourly activities:
00:00 - 01:30: Continued POOH. Hole fill correct but pipe started running over. Broke circulation with 800 LPM and full returns. Pumped slug.
01:30 - 04:30: Continued POOH. Hole fill correct.
04:30 - 06:00: M/u steerable BHA including lo-flo MWD w/ annular pressure sub. Maximum gas for the day 18 circulating at 2100m while RIH with cement stinger. Total mud lost for the day 28. 5 m3.
06:00 - 12:00: M/u and RIH with 8 1/2" steerable BHA. Tested MWD. No communication with annular pressure sub. Replaced sub with new one still no signal RIH to 1000m.
12:00 - 12:30: Filled pipe and broke circulation while staging pumps up to 500 LPM full returns.
12:30 - 14:30: Continued RIH with steerable assembly. Filled pipe and broke circulation while staging pumps up to 500 LPM full returns.
14:30 - 15:30: Cut and slipped drilling line while circulating 500 LPM. 1. 55 SG mud coming out of hole. Full returns.
15:30 - 17:00: Continued circulating and staged pumps up to 1300 LPM. Mud weight out 1. 65 SG MAX from slugs, MW in 1. 52 SG. No losses.
17:00 - 19:00: RIH from 2100m to 2500m. Broke circualtion at 2350m, 500 LPM, no losses.
19:00 - 00:00: Washed to bottom with 500 LPM and no losses. Resistance at 2882m 2884m required 900 LPM to get through without motor stalling. No losses. Otherwise no resistance met. Very fine cement particles started returning. Mud weight increased from 1. 53 SG to range of 1. 55-1. 60 SG w/ MAX. Of 1. 64 SG. Solids in returns up to 90 cement.

24-hour summary: RIH with steerable drilling assembly and washed from 2500m to 3010m with no resistance or evidence of hard cement plug. POOH to p/u cement stinger.
Hourly activities:
00:00 - 01:00: Continued washing down. From 2977m increased pump rate from 500 LPM to 700 LPM to maintain progress of balder Still a lot of fine cement particles coming up but no real resistance. Mud weight 1. 54 SG to 1. 59 SG from cement contamination. No losses downhole. Maximum gas 5 wellhead area).
01:00 - 06:00: Pumped slug and POOH. Hole fill OK.
06:00 - 07:30: Completed POOH with 8 1/2" sidetrack BHA stood back BHA in derrick.
07:30 - 08:00: Serviced rig TDS.
08:00 - 13:00: MU 3 1/2" CMT. Stinger x 5" DP. RIH to 1011 m broke circulation. Continued to RIH to 2100 m. Broke circulation excessive amount of cuttings ø shakers 20 CMT. In returns.
13:00 - 15:30: Circulated ø 2100 m to achieve even mud WT. to clean shakers. Increased circ. Rate to 1300 LPM maximum via step increases. After btms up, shakers were clean but mud WT. Out 1,55 SG. Continued to circ. Until 1,52 SG mud WT. Coming out. Note boosted riser during circulating no mud losses during circulation.
15:30 - 19:30: MU CMT. Stand racked same in derrick. Continued RIH with CMT. Stinger from 2100 2776 m. Broke circulation ø 2300, 2500 2700 m full returns ø 500 LPM.
19:30 - 20:30: While TIH, took 5 MT of weight down ø 2776 m. W/r from 2776 2800 m using 500 LPM 70 RPM. Continued RIH to 2980 m broke circ. Ø 2900 m.
20:30 - 21:30: Washed down last stand from 2980 3004 m ø 500 LPM started losing mud ø 4 m3/hr.
21:30 - 22:30: Pulled back to 3002 m still losing mud ø 500 LPM. Pulled back to 2983 m. Broke circ. no mud losses ø 200,300,400,&500 LPM. Broke out connection mud u TBG. Up string.
22:30 - 23:00: MU CMT. Stand continued to circulate. Now losing mud ø 450 LPM but no losses ø 400 LPM. Circulated approx. 1/2 DP volume while preparing to spot CMT. Plug.
23:00 - 00:00: RU cement hose pumped 5 m3 1,69 SG spacer ø 400 LPM using rig pump. Tested lines to 125 bar started mixing CMT. For sidetrack plug.

24-hour summary: Completed POOH with sidetrack BHA. TIH to set sidetrack plug breaking circulation circulating as needed. Set sidetrack plug from 2983 2835 m with 0,5 m3 of mud loss. POOH with stinger.
Hourly activities:
00:00 - 02:00: Mixed/pumped 5,4 m3 1,95 SG CMT. 1,5 m3 1,69 SG spacer ø maximum rate of 400 LPM. Displaced CMT. W/rig pump-ø 400 LPM. Slowed rate to 280 LPM once CMT. Cleared end of DP/STINGER. Recorded 0,5 m3 of mud loss during the displacement no loss during pumping of CMT. Sidetrack plug from 2983 2835 m. Cip ø 0145 hrs.
02:00 - 03:00: POOH to 2694 m total of 10 stds.
03:00 - 06:00: Pumped slug POOH with CMT. Stinger.
06:00 - 08:00: Completed POOH with 3 1/2" CMT. Stinger. Racked 3 1/2" DP in derrick.
08:00 - 11:00: MU 8 1/2" steerable BHA TIH to 576 m LD non-operable bhi downhole ECD sub. Tested motor MWD ø 576 m.
11:00 - 11:30: Function tested bops on both pods.
11:30 - 15:30: Continued to RIH to 2716 m broke circulation ø 1200 2105 m on TIH.
15:30 - 17:00: While RIH, driller ran into obstruction at 2716m. Set down 50 ton, this includes partial WT. Of TDS/BLOCK. Pulled free with 30ton o. Pull. Stood back 1 STD. tried to establish circ. Bit or drillstring plugged eventually able to partially/momentarily unplug with 241 bar but bit- string plugged again. Tried to break plug w/275 bar unsuccessful.
17:00 - 22:00: POOH wet to replace bit motor.
22:00 - 00:00: PU new button bit back-up motor due to earlier mishap. Found solids- 90 CMT. in MWD'S in-line screen. Tested motor MWD OK.

24-hour summary: Finished POOH with cement stinger. TIH with 8 1/2" sidetrack BHA. Tagged ø 2716m entire weight of drillstring partial weight of TDS/ block slacked-off. Drillstring plugged-unable to circulate. POOH with wet string. MU new bit motor found MWD plugged. TIH to sidetrack.
Hourly activities:
00:00 - 06:00: Continued to MU RIH with 8 1/2" sidetrack BHA drifting DP to 2 3/4" because of cement located in drillstring earlier. Broke circ. Ø 430m ø 1000m.
06:00 - 10:00: Continued to TIH with sidetrack BHA to 2600 m. Broke circulation ø 9 5/8" window.
10:00 - 12:00: Wash/ream from 2600 2730 m. Had to work through obstruction/ledge ø 2714 m.
12:00 - 14:30: Continued to wash/ream from 2730 2903 m tagged top of sidetrack plug ø 2903 m.
14:30 - 15:00: Drilled CMT. From 2903 2911 m dressing-off sidetrack plug.

24-hour summary: Completed RIH to 2600 m. W/r from 2600 2903 m top of sidetrack plug. Drilled CMT. To 2911 m. Commenced drilling 8 1/2" hole from 2911 m at 15/9-19bt2.
Hourly activities:
12:00 - 00:00: Sidetracked and drilled 12 1/4" hole. Drilled/surveyed from 1493m to 1536m steered from 1493 to 1507m, 1509-1511m, 1513-1523m and 1531-1536m. deg. Right tf) increased MW from 1,35 to 1,40 SG. While drilling.

24-hour summary: None
Hourly activities:
00:00 - 06:00: Cont. Drilling/surveying 12 1/4" hole to 1588m steered from 1536m to 1551m and 1562m to 1580m. deg. Right toolface)
06:00 - 10:00: Drilled/surveyed 12 1/4" hole from 1588m to 1630m steered from 1589 to 1608m, 100 degrees right.
10:00 - 11:30: Circulated bottoms up due to excessive amount of cuttings over shakers.
11:30 - 12:30: Backreamed from 1630m to 1485m.
12:30 - 13:30: Circulated bottoms up.
13:30 - 14:00: RIH to 1630m.
14:00 - 16:00: Drilled/surveyed 12 1/4" hole from 1630m to 1653m steered from 1643m to 1653 m, toolface 110 deg. Left. Observed 70 bar increase in pump pressure.
16:00 - 17:00: Pumped 3 m3 ester pill. Swept pill around, no effect.
17:00 - 21:00: Backreamed from 1653m to 1000m.
21:00 - 22:30: Circulated hole clean. Had high amount of cuttings over the shakers from casing. Pumped slug.
22:30 - 00:00: POOH

24-hour summary: Drilled surveyed to 1653m. Still fluctuations in pumping pressure. Backreamed and POOH, lots of cuttings from stabilizers/small cavings. Bit undergauge, 2 nozzles plugged with rubber from motor. Prepared new BHA.
Hourly activities:
00:00 - 05:00: Continued POOH. Inspected BHA for damage/blockage. Found 2 nozzles plugged with flake of reinforced rubber from mud motor. Laid down mud motor and bit. Racked back MWD in derrick.
05:00 - 06:00: Made up new mud motor and bit. Tested mud motor. RIH with BHA.
06:00 - 09:00: Continued making up bottomhole assembly. Oriented tool face. Ran in to 250m. Attempted testing the MWD tool, negative.
09:00 - 12:30: POOH. Laid down MWD tool. Picked up a new MWD tool and tested same. Ran back in to 250m.
12:30 - 14:30: Continued RIH to 1485m. Filled pipe at 700m.
14:30 - 15:30: Reamed hole from 1485m to 1653m.
15:30 - 00:00: Drilled/surveyed 12 1/4" hole from 1653m to 1799m steered from 1653 to 1658m degr. Left), 1665-1679 l), 1694-1709 l), 1723-1738 l), 1752-1767 l) and 1780-1795 l).

24-hour summary: RIH to 250m, tested MWD, negative, POOH, changed out MWD. RIH to 1485m, reamed to 1653m, drilled from 1653m to 1926m.
Hourly activities:
00:00 - 06:00: Continued drilling/surveying 12 1/4" hole from 1799m to 1926m steered from 1809m to 1824m 115 degrees left).
06:00 - 00:00: Drilled/surveyed 12 1/4" hole from 1926m to 2241m steered from 1982m to 1992m 90 degrees right).

24-hour summary: Drilled/surveyed 12 1/4" hole from 1926m to 2357m.
Hourly activities:
00:00 - 06:00: Continued drilling 12 1/4" hole from 2241m to 2357m steered from 2242m to 2248m 120 degrees right).
06:00 - 15:00: Drilled/surveyed 12 1/4" hole from 2357m to 2502m steered from 2385m to 2392m 130 degrees right)
15:00 - 16:00: Circulated bottoms up
16:00 - 22:30: Back-reamed from 2502m to 13 3/8" shoe as precaution.
22:30 - 00:00: Circulated bottoms up

24-hour summary: Drilled 12 1/4" hole to 1502m. Back-reamed to 13 3/8" shoe. Ran in to 2502m. Drilled 12 1/4" hole to 2559m.
Hourly activities:
00:00 - 00:30: Investigated alarm on TDS. Found air blower hose to have jumped off. Re-installed same.
00:30 - 03:00: Ran back in to 2502m. Filled pipe and circulated a riser volume at 1950m.
03:00 - 06:00: Drilled/surveyed 12 1/4" hole from 2502m to 2559m steered from 2502m to 2510m 75 degrees right)
06:00 - 00:00: Drilled/surveyed 12 1/4" hole from 2559m to 2840m steered from 2559 to 2568m 90 degrees right) and from 2763 to 2775m side).

24-hour summary: Drilled/surveyed 12 1/4" hole from 2559m to 2938m
Hourly activities:
00:00 - 06:00: Continued drilling/surveying 12 1/4" hole to 2938m.
06:00 - 16:00: Drilled/surveyed 12 1/4" hole from 2938m to 3018m.
16:00 - 17:00: Circulated bottoms up
17:00 - 18:00: Backreamed from 3018m to 2952m. Hole packed off. Lost returns. Unable to rotate.
18:00 - 21:30: Ran in from 2952m to 2968m. Established rotation and circulation. Only partial returns when pumping more than 1200 LPM.
21:30 - 23:00: Ran in to 3017m. Pumped and set 7,1 m3 liquid casing LCM-PILL from 3017m to 2927m while pulling back to 2957m, full returns. At 2957m, hole packed off. Unable to rotate. Ran back in to 2963m.
23:00 - 00:00: At 2963m, reestablished rotation and circulation. Keeping 40 RPM on the drill string, increased circulation rate in steps to 1300 LPM, full returns.

24-hour summary: Drilled/surveyed 12 1/4" hole from 2938m to 3018m. Backreamed to 2957m. Hole packed off. Lost circulation. Pumped LCM-PILL. Reestablished circulation. Started backreaming OOH.
Hourly activities:
00:00 - 03:00: Continued increasing circulation rate to 1900lpm, full returns.
03:00 - 05:30: Increased circulation rate to 2600 LPM, full returns. Kept 40 RPM on drill string.
05:30 - 06:00: Backreamed out of hole from 2963m to 2941m.
06:00 - 07:00: Continued backreaming from 2941m to 2936m. Hole packed off and string stalled out. Attempted working pipe down with 40 tons, no-go. Attempted to jar down, no-go. Attempted working pipe down with torque, no-go. Pulled 60 tons overpull on pipe. Worked pipe down to 2941m. Reestablished rotation and circulation.
07:00 - 12:00: Circulated and rotated pipe at 2941m. Increasing amount of cuttings over shakers. Worked pipe down to 2961m.
12:00 - 13:30: Pumped 10 m3 lo-vis pill followed by 10 m3 hi-vis pill, circulated pills around.
13:30 - 19:30: Continued circulating. Raised mudweight to 1,45 SG.
19:30 - 21:30: Pumped 20 m3 hi-vis 1,6 SG pill. Circulated same around.
21:30 - 00:00: Circulated to record cuttings returns.

24-hour summary: Backreamed to 2937, packed off, unable to rotate. Reestablished rotation and circulation. Pumped pills to clean hole. Raised mudweight to 1,45 then to 1,50 to control overpressured shales
Hourly activities:
00:00 - 03:00: Continued circulating hole.
03:00 - 06:00: Circulated and raised mudweight to 1,50 SG.
06:00 - 09:30: Circulated while working pipe from 2967m to 2941m. Recorded cuttings returns.
09:30 - 12:30: Circulated hole and raised mudweight to 1,55 SG.
12:30 - 18:00: Circulated hole while recording cuttings returns over shaker. Worked pipe between 2967m and 2941m while circulating.
18:00 - 00:00: Backreamed from 2941m to 2913m at 2700lpm, 150 RPM. TDS stalled out at 2917m. Worked pipe due to tight hole.

24-hour summary: Circulated to record/observe cuttings returns. Raised mudweight to 1,55 SG to control overpressured shales. Backreamed to 2850m.
Hourly activities:
00:00 - 00:30: Continued backreaming to 2910m. Worked pipe due to tight hole.
00:30 - 02:30: Circulated bottoms up while working pipe between 2939m and 2910m.
02:30 - 06:00: Continued backreaming from 2910m to 2850m. Worked pipe due to tight hole. TDS stalled out at 2899m. Circulated 15 minutes on connection.
06:00 - 07:00: Backreamed from 2850m to 2837m. Worked pipe due to tight hole.
07:00 - 08:00: Circulated bottoms up due to high amount of cuttings over shakers.
08:00 - 21:30: Backreamed from 2837m to 2730m. Worked pipe due to tight hole.
21:30 - 22:30: Circulated bottoms up.
22:30 - 00:00: Backreamed from 2730m to 2715m. Worked pipe due to tight hole.

24-hour summary: Backreamed from 2850m to 2608m.
Hourly activities:
00:00 - 06:00: Continued backreaming from 2715m to 2608m. Circulated 20 to 15 mins. On each connection. Worked pipe in tight sections. Tight hole to 2701m. Tight spots to 2608m.
06:00 - 16:30: Backreamed from 2608m to 2320m. MAX tourque 14000 NM.
16:30 - 17:30: Circulated hole and started increasing mud weight to 1. 60 s. G.
17:30 - 00:00: Backreamed from 2320m to 1661m. MAX torque 14000 NM.

24-hour summary: from 2608m to 2320m. hole and increased mudweight to 1. 6 s. G. from 2320m to 1590m. hole clean due to large amounts of cuttings in returns. from 1590m to 1475m.
Hourly activities:
00:00 - 01:00: Backreamed from 1661m to 1590m. MAX torque 10000 NM. Large amounts of cuttings started comming over the shakers and a slight pressure increase was observed.
01:00 - 02:30: Circulated hole until cuttings level came down and no pressure increase was observed while pulling the stand out.
02:30 - 06:00: Backreamed from 1590m to 1475m. MAX torque 10000 NM.
06:00 - 07:30: Backreamed from 1475m to 1440m.
07:30 - 08:00: RIH to 1615m, no tight spots. POOH to 1445m.
08:00 - 10:00: Backreamed from 1445m to 950m.
10:00 - 15:30: Sluged pipe. POOH. Laid down 12 1/4" bottom hole assembly.
15:30 - 17:00: Cleaned ester mud on rig floor.
17:00 - 00:00: Made up new BHA and ran in hole to 840m.

24-hour summary: from 1475m to 950m. ester mud from rig floor. new 12 1/4" BHA and RIH to 2740m. from 2740m to 2780m. from 2780m to 2903m.
Hourly activities:
00:00 - 04:00: Continued running in hole from 840m to 2740m. Washed past spot at 2650m.
04:00 - 06:00: Washed down from 2740m to 2780m. Continued RIH from 2780m to 2903m. Washed past spot at 2825m.
06:00 - 06:30: Continued RIH from 2903m to 2965m.
06:30 - 10:30: Reamed/washed from 2965m to 3018m. Tight spot at 2965m.
10:30 - 13:00: Drilled/surveyed 12 1/4" hole from 3018m to 3043m.
13:00 - 19:30: Drilled 12 1/4" hole from 3043m to 3050m with limited penetration- rate. Varied drilling parametres without any apparent gain.
19:30 - 00:00: Backreamed from 3050m to 2778m. MAX torque 15000 NM. RPM 140. Pump pressure 200 bar at 128 SPM.

24-hour summary: RIH from 2903m to 2965m. from 2965m to 3018m. from 3018m to 3050m. from 3050m to 2130m.