bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
00:00 - 00:30: Finished with greasing valves, opened hydraulic master valve, verified no pressure, opened swab valve, opened DHSV
00:30 - 03:45: Pumped into the well 3m3 50/50 mix of MEG and sea water, 5 bar, 10m3 wash pill, pressure equalised at 58 bar above DHSV. Continued pumping sea water. Pressure 60-80 bar, 1300l/min. Pressure gradually increased to 150bar. After 180m3 pumped well volumes) shut down pumps. Monitored siwhp for 20 min. Pressure down to 24 bar.
03:45 - 08:45: Continued bullheading into the well w/ 1300l/min, pressure stabilized at 170bar, slowly decreasing to 165 bar. After 360m3 pumped well volumes) shut down pumps. Monitored siwhp for 15 min. Pressure down to 48 bar.
08:45 - 15:00: Continued bullheading into the well w/ 1300l/min, pressure stabilized at 175bar, slowly decreasing to 170 bar. After 630m3 pumped well volumes) shut down pumps. Monitored siwhp for 15 min. Pressure down to 60 bar. Meanwhile evaluated situation, discussed w/ duty team onshore.
15:00 - 17:30: Continued bullheading into the well w/ 1300l/min, pressure stabilized at 182bar. Meanwhile carried out TBT for cementing operation. After 200m3 pumped well volumes) shut down pumps. Monitored siwhp. Pressure down to 95 bar. Confirmed w/ duty team onshore and continued with cementing operation. Totally bullheaded into the well 1370m3
17:30 - 20:30: Released bottom dart. Mixed and pumped 27. 6m3 of 1. 9sg cement slurry at 800l/min. Pressure 116 bar, decreasing to 40bar, indicating cement moving down in the tubing. Displaced lines w/ 0,9m3 of hi-vis pill. Released top dart. Pumped 7,1m3 of hi-vis pumped 8m3 of hi-vis). Displaced w/ 50,4m3 of sea water at initial rate of 1200lpm. Pressure gradually increased to 150bar and then rapidly increased to 260bar, indicating plugging off perforation w/ cement slurry. Started reducing pumping rate in steps to keep pumping pressure below 270 bar. Reduced rate from 1200l/min to 170l/min. Pumped 3m3 of contamination pill, pressure at 260bar. Shut down pumps and monitored WH pressure decline. Recorded final stabilized squeeze pressure of 40bar. Closed swab valve. Verified volumes pumped by checking volumes left in the pits and silos. Theoretical top of cement 3172mmd. DHSV was cycled several times after 35m3 of sea water displacement was pumped
20:30 - 00:00: Continued laying down pipe. Meanwhile WOC. Worked on BOP tests

24-hour summary: bullheaded sea water pumped cement plug through TBG l/d pipe, WOC
Hourly activities:
00:00 - 01:00: Removed hatches over f-15 and f-10 slots.
01:00 - 01:45: Prepared XT and TDS for lifting operation. Carried out TBT to lift XT and pull foxhole
01:45 - 03:00: Pulled foxhole to free up way for moonpool overhead crane for transporting XT
03:00 - 03:45: Pulled master bushing. Attached lifting arrangement to XT as per lifting plan
03:45 - 05:15: Removed grayloc clamp below XT block. Lifted XT to moonpool and moved to transport skid, secured same on transport skid. Meanwhile installed hatch over f-10 slot to minimize openning
05:15 - 05:45: Installed foxhole
05:45 - 07:00: Removed half moon hatches on XT deck, released NT-2 connector. Lifted NT-2 bonnet and spacer spool to rig floor. L/d same
07:00 - 09:00: Cut control lines in multibowl. Installed blank plug on exit blocks. Removed antivibration ring
09:00 - 10:15: Lowered communication collar from moonpool to multibowl. Installed communication collar. Meanwhile errect scaffolding in moonpool.
10:15 - 10:30: Performed pre-job meetingto run HP riser
10:30 - 12:15: Run HP riser, installed gasket, made up riser connection. R/d HP riser slings and recover chains to rig floor
12:15 - 13:00: Installed moonpool hatches
13:00 - 19:00: Removed protector and cleaned seal face. Installed gasket. Landed BOP onto riser. Started working with tensioners. Meanwhile pressure tested choke manifold.
19:00 - 21:00: Started to m/u NT-2 connector. Continued pressure test choke manifold
21:00 - 21:30: Installed slick joint
21:30 - 00:00: Continued to m/u NT-2 connector. Installed BOP tension system. Shifted BOP load to tension system

24-hour summary: n/d XT pulled XT spacer spool installed communication collar installed HP riser n/u BOP
Hourly activities:
00:00 - 01:00: Installed diverter
01:00 - 02:00: M/u bolts on slick joint. Meanwhile installed master bushing, performed TBT for pressure testing of riser connections
02:00 - 02:30: Filled riser and BOP w/ sea water
02:30 - 03:00: Tested riser connector to 20/310 bar for 5/10 min. Good test
03:00 - 03:15: Performed pre-job meeting to pull BPV
03:15 - 03:30: M/u BPV retrieving tool to stand of 3,5in DP
03:30 - 04:00: Pulled BPV dart to the rig floor
04:00 - 04:45: Pulled BPV to the rig floor. L/d BPV retrieving tool
04:45 - 05:00: Performed pre-job meeting to instal THRT
05:00 - 06:00: Rigged up 7in TBG handling equipment
06:00 - 07:00: P/u top 7in TBG joint and m/u to weco 1502 swedge. L/d same
07:00 - 07:15: Performed pre-job meeting to p/u and RIH THRT
07:15 - 08:15: P/u and m/u tubing hanger running tool, joint and joint Connected control lines
08:15 - 09:15: Engaged THRT and took 2. 5ton overpull test. OK
09:15 - 09:30: M/u cement line to swedge and tested same to 100bar. OK
09:30 - 10:30: Pressured up control line to DHSV to 520bar. Pressured up above DHSV to 100bar w/ cement unit. DHSV did not open. Bled off pressure above DHSV. Closed LTV and retested line from cement unit to 250bar. OK. Pressured up above DHSV to 120bar, DHSV opened. Bled off pressure from the well. Rigged down cement hose and LTV
10:30 - 10:45: Performed pre-job meeting to r/u WL
10:45 - 11:45: R/u wireline equipment
11:45 - 12:45: RIH w/ run 5,375" od cutter from 0 m to 1500 m. Average running speed 25 m/min
12:45 - 13:15: RIH w/ run 5,375" od cutter from 1500 m to 2500 m. Average running speed 33 m/min
13:15 - 14:00: RIH w/ run 5,375" od cutter from 2500 m to 3086 m. Average running speed 13 m/min
14:00 - 15:00: Logged from 3086m to 2923m. RIH back to 3086m. Attempted to pass 3086m, no-go
15:00 - 15:15: Evaluated situation. Discussed situation w/ onshore organisation
15:15 - 15:30: Positioned cutter at 3075 m Performed cut. Observed 200l backflow at rotary
15:30 - 17:00: POOH from 3075 m to 0 m Average pulling speed 34 m/min
17:00 - 17:30: R/d wireline equipment
17:30 - 18:00: P/u and m/u swedge, connected hose and LTV. Confirmed line up
18:00 - 20:00: Staged up to 1300l and circulated 75m3 of sea water. Took returns from a-annulus through AKV and MGS to the dedicated slop pit. MAX gas in returns 3
20:00 - 20:15: Performed pre-job meeting to pull th
20:15 - 21:00: R/d cementing hose and broke off swedge
21:00 - 22:45: Released th w/ up weight 188t, no overpull. Bled off pressure in DHSV control line. Pulled and l/d landing string and THRT
22:45 - 00:00: Started to change handling equipment. Removed master bushing, installed spider, installed pwer rollers, installed reel for spooling control line

24-hour summary: n/u diverter pull BPV instal THRT rig up WL, RIH and cut 7in TBG above production packer release th, POOH, l/d th
Hourly activities:
00:00 - 01:15: Changed handling equipment. Removed master bushing, installed spider, installed power rollers, installed reel for spooling control line
01:15 - 03:45: Pulled tubing from 3075m to 2957m. Removed control line clamps, spooled control line, l/d tubing joints. Average pulling rate 4 joints/hour
03:45 - 04:30: Experienced communication problems w/ CSG tong. Changed door sensor
04:30 - 06:00: Pulled tubing from 2957m to 2874m. Removed control line clamps, spooled control line, l/d tubing joints. Average pulling rate 7 joints/hour
06:00 - 06:15: Experienced communication problems w/ CSG tong
06:15 - 08:45: Pulled tubing from 2874m to 2685m. Removed control line clamps, spooled control line, l/d tubing joints. Average pulling rate 6,4 joints/hour
08:45 - 09:45: HTS belt fault occurred, contacted electronics technician
09:45 - 10:45: Pulled tubing from 2685m to 2614m. Removed control line clamps, spooled control line, l/d tubing joints. Average pulling rate 6,0 joints/hour
10:45 - 11:00: Performed pre-job meeting to rig down CSG handling equipment
11:00 - 11:15: Pull slips
11:15 - 11:45: Pulled and l/d DHSV
11:45 - 12:00: Pulled TBG joint, removed control lines and run joint back into hole
12:00 - 12:30: Changed out handling equipment to 5,5in DP
12:30 - 12:45: Cleared rig floor
12:45 - 13:00: P/u and m/u swedge to tubing
13:00 - 14:00: R/d control line reel, meanwhile disconnected hoses and made CSG tong ready to remove
14:00 - 14:30: P/u single and RIH from 2574m to 2585m
14:30 - 14:45: Pulled master bushing and installed ps21
14:45 - 17:00: Continued RIH on 5,5in DP from 2585m to3070m. Filled pipe half way. Average RIH speed 214 m/hour.
17:00 - 17:30: M/u TDS and staged up pumps to 3000l/m, 180 bar. Pumped 32m3 sea water and 20m3 wash pill, displaced combination wiper plug out of TBG 3070m)
17:30 - 20:00: M/u side entry sub assembly. Performed pre-job meeting for cement job. Installed cement line and pressure tested same to 300bar. OK
20:00 - 22:00: Balanced cement plug mixed and pumped 9,2 m3 of 1,9sg cement slurry, 600 l/min. Displaced the cement to the rig floor with 2890 l of drill water. Zeroed volume counters. Displaced the cement with 45,6 m3 strokes) of sea water, 2000 l/min/ 65 bar. Pulled out of cement to 2868m of cement)
22:00 - 00:00: Circulated out upper 50m of cement at 2700l/min, pressure went from 185bar down to 140bar as cemented was circulated out of well. Observed cement returns on surface. Theoretical volume of returned cement was 1. 8m3. Totally circulated 270m3. TOC at 2868m

24-hour summary: pulled and l/d 480m of 7in TBG, l/d DHSV RIH w/ rest of the 7in TBG on drill pipe placed balanced cement plug circulated excess cement
Hourly activities:
00:00 - 00:45: Pulled 1x stand of DP, m/u BOP cleaning tool. Dropped 2,125in ball to function tool. Sheared at 50bar
00:45 - 02:00: Flushed BOP, made 4x passes across BOP, circulated at 3500l/min, 20bar
02:00 - 06:00: POOH 5,5in DP from 2832 m to 2570 m Had to pump out as excessive fooaming occured in the trip tank. R/u CSG handling equipment.
06:00 - 07:00: R/u CSG handling equipment
07:00 - 07:15: Performed TBT for pulling remaining tubing
07:15 - 07:30: Continued r/u CSG handling equipment
07:30 - 08:45: POOH with tubing from 2570 mmd to 2510 mmd. Cut control lines. Average pulling speed 4 jnts/hr.
08:45 - 09:15: Repaired sensor on casing tong. Meanwhile performed housekeeping on drill floor.
09:15 - 12:00: Continued POOH with tubing from 2510 mmd to 2280 mm. Average pulling speed 7,2 jnts/hr.
12:00 - 12:15: Greased and inspected casing tong
12:15 - 15:30: Continued POOH with tubing from 2280 mmd to 1981 mmd. Average pulling speed 8 jnts/hr
15:30 - 15:45: Pulled out one additional joint and removed control lines in order to have slick joint through BOP while in slips. Meanwhile performed TBT for r/d CSG handling equipment
15:45 - 17:45: R/d CSG handling equipment
17:45 - 18:00: Cleaned and cleared drill floor
18:00 - 18:30: Performed drops check on TDS.
18:30 - 19:00: P/u spear assy from set-back and stabbed into tubing
19:00 - 19:15: Performed TBT prior for engaging spear in tubing and tag TOC
19:15 - 19:30: Engaged spear in 7" tubing
19:30 - 19:45: Removed master bushing and installed PS-21 slips
19:45 - 21:15: RIH with tubing on 5 1/2" DP from 1971 mmd to 2764 mmd. Average running speed 528 m/hr.
21:15 - 22:15: Investigated fault on VFD failure on drawworks motor De-assigned motor
22:15 - 22:30: RIH with tubing on 5 1/2" DP from 2764 mmd to 2853 mmd.
22:30 - 23:00: Established circulation 560 LPM 13 bar and washed down to 2880 mmd. Set down 10 ton.
23:00 - 23:30: Stopped pumps. Unable to set down all tubing weight in order to release spear. Continued RIH from 2880 mmd to 2894 mmd. Set down all tubing weight, 60 ton. Released spear.
23:30 - 00:00: Dropped drift and POOH with spear assy from 900 mmd to 780 mmd.

24-hour summary: POOH w/ 5 1/2" DP pulled remaining 7" tubing from 2570 mmd to 1971 mmd RIH with tubing on spear on 5 1/2" DP. Tagged TOC at 2894 mmd POOH with 5 1/2" DP retrieved MS-T surface seal assy
Hourly activities:
00:00 - 00:15: Performed TBT for r/d casing tong
00:15 - 01:00: R/d casing equipment
01:00 - 01:15: Changed handling equipment to 5 1/2"
01:15 - 01:30: Performed TBT for m/u jet sub/torque tool BHA
01:30 - 02:00: M/u jet sub/torque tool BHA
02:00 - 03:00: RIH with jet sub/torque tool BHA from surface to 129 mmd. Took 6 ton weight. Unable to run torque tool into casing stump. Attempted to run into casing with and without rotation.
03:00 - 03:45: POOH with BHA and l/o same
03:45 - 04:45: Prepared 12 1/4" taper mill BHA
04:45 - 05:00: Performed TBT for m/u 12 1/4" taper mill
05:00 - 05:45: P/u and m/u 12 1/4" taper mill BHA
05:45 - 06:45: RIH on 5 1/2" DP and tagged top of casing cut at 126,3 mmd.
06:45 - 07:00: POOH with 12 1/4" taper mill change of plans to avoid overtorqueing tie-back adapter during milling.
07:00 - 08:00: L/d 12 1/4" milling BHA
08:00 - 09:00: Discussed situation with land organization meanwhile prepared 9 1/2" taper mill
09:00 - 12:00: Prepared plan for dressing off top of casing. P/u CH mill and b/o stab. M/u assy and l/o. Rearranged pipe in derrick to access over-torqued pipe in set-back.
12:00 - 12:30: Performed TBT for dressing off top of cut. Meanwhile performed drops check on TDS.
12:30 - 14:30: P/u and m/u 9 1/2" taper mill BHA
14:30 - 15:00: RIH with milling BHA from 43 mmd to 120 mmd.
15:00 - 15:30: Filled pipe and established circulation 200 LPM 7 bar. Up/down weight 78/74 ton. Tagged top of casing cut at 126 mmd with 5 ton.
15:30 - 18:15: Rotated pipe 15-20 deg and passed restriction. Worked string up/down without flow and rotation several times. MAX overpull 15 ton. Overpull decreased to 0 ton after working up/down repeatedly.
18:15 - 20:00: Pulled above cut. Staged up pumps to 2000 LPM and initiated rotation 60 RPM. Free rot. Torque 1 5 KNM. RIH slowly until torque increased. Increased rotation to 120 RPM. Milled off torque and continued RIH slowly until torque increased again. Repeated until entire taper mill passed through top of cut w/o taking weight. Worked up/down with flow and rotation several times to polish cut.
20:00 - 20:15: Performed TBT prior to POOH
20:15 - 21:15: POOH with milling BHA.
21:15 - 21:30: Measured gauge on mill, 9 1/2". Observed wear on upper part of taper mill. L/d milling BHA.
21:30 - 22:00: Serviced and performed drops check on FWD PRS.
22:00 - 22:15: Performed TBT for RIH with jet sub/torque tool BHA.
22:15 - 22:30: P/u and m/u jet sub/torque tool BHA.
22:30 - 23:30: RIH with jet sub/torque tool BHA. Esablished circulation prior to entering cut, 120 LPM. Tagged no-go with 6 ton at 143m. Released tie-back adapter by rotating 6,5 turn LH. Released at 11,7 KNM.
23:30 - 00:00: POOH with jet sub/torque tool BHA

24-hour summary: RIH with torque tool and attempted to release tie-back adapter RIH with 9 1/2" taper mill and dressed off top cut on CSG stump RIH with torque tool and released tie-back adapter RIH with spear and retrieved CSG stump and tie-back adapter RIH with guns
Hourly activities:
00:00 - 00:30: Continued l/d jet sub/torque tool BHA. Cleaned and cleared drill floor. Meanwhile prepared to run spear BHA
00:30 - 00:45: Performed TBT for RIH with spear to fish casing stump and tie-back adapter.
00:45 - 01:15: P/u spear assy and set in slips. Removed thread sleeve from adjustable sub on the grapple from previous fishing run).
01:15 - 02:00: RIH w/spear to 130 mmd. Engaged spear inside casing stump.
02:00 - 02:45: POOH w/spear and fish. Observed 2 ton overpull. Secured fish in slips and released spear.
02:45 - 03:00: Performed TBT for l/o fish
03:00 - 03:45: L/o fish and r/b spear
03:45 - 04:00: Cleaned and cleared drill floor. Meanwhile prepared equiment to run guns.
04:00 - 04:15: Performed TBT for handling guns
04:15 - 05:15: P/u and m/u gun BHA
05:15 - 05:45: RIH w/guns to 145,3 mmd
05:45 - 06:15: Confirmed line up and closed BOP. B/o TDS and dropped ball. M/u TDS and started pumping with low rate. Guns fired at 139 bar. Continued circulating with 900 LPM 6 bar. Lost 8m3 after firing guns.
06:15 - 06:45: Circulated b/u through choke. MAX 1 gas measured on mud logging gas trap. No h2s detected.
06:45 - 07:15: Flow checked well for 5min through fully open choke, static. Opened BOP and flow checked well on TT for 10min, static.
07:15 - 08:00: POOH to surface
08:00 - 08:15: L/d perforation BHA
08:15 - 08:30: Performed TBT for m/u casing hanger mill.
08:30 - 11:00: P/u taper mill assy and removed stab and DC from taper mill run. P/u casing hanger mill and m/u same.
11:00 - 12:30: P/u and m/u 8 1/4" DC. RIH w/ milling BHA to 135m.
12:30 - 12:45: M/u TDS and RIH from 135mmd to 141 mmd. Established parameters 2000lpm/15bar, 80rpm/1-4knm. Up/down weight 87/84ton. Tagged CH with 2 ton at 141,29 mmd.
12:45 - 19:00: Milled 10 3/4" CH from 141,29mmd to 141,45mmd. Stalled out several times. Tried different parameters to maximize progress. Parameters 1000-2000lpm/4-15bar, 60-120rpm/4-25knm, avg ROP 2,6cm/hr.
19:00 - 00:00: Continued milling 10 3/4" CH from 141,45mmd to 141,51mmd. 2000 LPM/15 bar, 80-120rpm/4-25knm, 3-6ton wob, ROP 1 cm/hr. Experienced vibrations and string stalling out several times. Attempted to manipulate parameters to increase ROP.

24-hour summary: milled 10 3/4" CH id to 12 1/4"
Hourly activities:
00:00 - 03:00: Continued milling 10 3/4" CH from 141,51mmd to 141,58mmd. 2000 LPM/15 bar, 80-120rpm/4-25knm, 3-6ton wob, ROP 2,3 cm/hr. Observed 170ltrs gain, MAX 3ppm h2s in fluid and a small gas peak at 141,54mmd, indicating that casing parted from CH. Experienced vibrations and string stalling out several times.
03:00 - 03:15: Picked up mill above CH. Stopped rotation and slided down through CH. Took weight at depth where milling was stopped.
03:15 - 04:00: Continued milling from 141,58 mmd to 141,66 mmd 10cm past mark on DP). Stalled out several times and experienced vibrations at surface.
04:00 - 04:15: Attempted to slide through CH. Took weight at depth where milling was stopped.
04:15 - 04:30: Lined over to TT and performed TBT for drops check after severe vibrations.
04:30 - 05:15: Lined over to TT. Performed drops check of TDS and in BOP area.
05:15 - 05:45: Circulated 2 x b/u at 3000 LPM 30 bar. 1,5kg swarf on ditch magnets on flowline.
05:45 - 07:00: POOH with milling BHA
07:00 - 07:15: Performed TBT for l/d milling BHA
07:15 - 08:45: B/o XO, l/d 8 1/4" DC single and r/b 2 ea STD 8 1/4" DC.
08:45 - 09:00: P/u and m/u 12 1/4" flat bottom mill and RIH to 36 mmd.
09:00 - 09:45: Checked TDS after milling operation. Found hydraulic leak and repaired same.
09:45 - 11:15: RIH with flat bottom mill from 36 mmd to 135 mmd
11:15 - 11:30: Established circulation and recorded up/down weight 86/83 ton. Established parameters 80 RPM 1-4 KNM, 2000 LPM 15 bar. RIH and tagged top of hanger at 139,7 mmd.
11:30 - 13:30: Worked through CH. 40 140 RPM 3 30knm, 2000 LPM 15 bar. Worked down 40 cm. Experienced vibrations at surface. String stalled out several times.
13:30 - 14:30: Tagged top of casing at 141,7 mmd 1,5m below CH). Dressed off 10cm from top of casing. 100 RPM 3-8 KNM, 2000 LPM 14 bar.
14:30 - 14:45: Circulated 1 x b/u at 3500 LPM 40 bar.
14:45 - 16:00: POOH 1 STD. Attmpted to break out TDS. Broke between upper and lower IBOP. Used work basket to assess situation and performed drops check. Spun in main shaft to lower IBOP. Lowered string and set in slips.
16:00 - 16:15: Performed TBT for changing saver sub
16:15 - 19:00: Changed saver sub and m/u to lower IBOP.
19:00 - 19:30: Performed TBT for changing saver sub with new ongoing crew meanwhile prepared new saver sub.
19:30 - 21:45: Spun in shaft to IBOP, lifted pipe handler into position and m\u saver sub to IBOP 88knm m/u torque ring and installed lock-ring.
21:45 - 22:00: Performed drops check on TDS.
22:00 - 22:15: Adjusted pipe handler on TDS.
22:15 - 22:30: Performed TBT for POOH with milling BHA
22:30 - 23:00: POOH 1 STD and r/b. L/o pup joint
23:00 - 23:45: Continued to POOH. Unable to b/o xover on 8 1/4 DC due to over-torque, MAX 160knm. Changed out dies on IRN and attempted to b/o. M/u lift-sub and r/b DC with XO installed.
23:45 - 00:00: POOH w/ BHA to 27 mmd, r/b 8 1/4" DC.

24-hour summary: milled 10 3/4" CH dressed off top of casing RIH with cutter BHA
Hourly activities:
00:00 - 00:30: Continued POOH to surface
00:30 - 02:30: L/d BHA. Experienced over-torqued connection. Needed to clean jaws on IRN and break connections with 160 KNM. Cleaned and cleared drill floor
02:30 - 02:45: Performed TBT for m/u and RIH with cutter BHA
02:45 - 03:45: P/u and m/u cutter BHA. P/u and m/u 1 STD 5 1/2" DP.
03:45 - 04:00: Installed PS-21 slips in rotary table.
04:00 - 05:45: RIH w/ cutter BHA on 5 1/2" DP from 17 m to 701 m Avg. Tripping speed 390 m/hr.
05:45 - 06:00: Pulled out PS-21 slips and installed masterbushing
06:00 - 06:15: Performed TBT for p/u and m/u spear assy
06:15 - 07:00: P/u spear assy from derrick and stroke out bumper sub. B/o bullnose at bottom.
07:00 - 09:00: Installed XO and m/u spear assy
09:00 - 09:30: RIH w/ cutter BHA on 5 1/2" DP from 711 m to 817 m Avg. Tripping speed 230 m/hr.
09:30 - 10:30: Filled pipe. M/u TDS and recorded up/down weight 100/95 ton. Continued RIH to cutting depth at 853 mmd. Engaged spear. Initiated circulation 1675 LPM 78 bar and cut 10 3/4" x 9 5/8" casing at 850 mmd. Lost 40 ton weight. Up weight with fish 155 ton. Released spear.
10:30 - 11:00: POOH w/ cutter BHA on 5 1/2" DP from 853 m to 748 m.
11:00 - 12:45: Observed 0,4 m3 gain in trip tank. Spaced out and closed annular preventer. Monitored choke pressure for pressure build up no pressure build up observed. Circulated over choke 200 LPM for 30 min. Monitored choke for pressure build up. Opened BOP and flowcheck 15 min slight gain in trip tank.
12:45 - 13:00: Function tested BOP
13:00 - 13:30: Investigated slight gain in trip tank. Found fresh water leaking into flowline.
13:30 - 14:45: Continued POOH w/ cutter BHA on 5 1/2" DP from 760 m to 706 m. Inspected spear assy and r/b same. L/o XO.
14:45 - 15:00: Removed master bushing and installed PS-21 slips
15:00 - 16:00: POOH w/ cutter BHA on 5 1/2" DP from 706 m to 17 m Avg. Tripping speed 680 m/hr.
16:00 - 16:15: Removed PS-21 slips and installed master bushing
16:15 - 16:45: L/d cutter BHA.
16:45 - 17:15: Cleaned and cleared drill floor.
17:15 - 17:30: Performed TBT for p/u and m/u spear BHA
17:30 - 18:00: P/u and m/u spear BHA
18:00 - 18:45: RIH w/ spear BHA to 154 m and tagged top of casing. Enganged spear.
18:45 - 19:45: POOH w/ spear BHA and fish on 5 1/2" DP.
19:45 - 20:30: Pulled master bushing installed 10 3/4" casing slips
20:30 - 20:45: Performed TBT for r/u casing equipment
20:45 - 21:30: Pulled perforated casing pup and set in slips. Released spear and r/b
21:30 - 22:30: R/u handling equipment for pulling casing
22:30 - 22:45: Performed TBT for l/o perforated casing pup joint
22:45 - 00:00: L/o perforated casing pup joint. R/u pipe washer in rotary.

24-hour summary: RIH with cutter and cut 10 3/4" x 9 5/8" casing at 850 mmd. POOH with cutter. Observed gain in TT closed in well and investigated continued POOH to surface RIH with spear pulled tubing to 383 mmd. Observed gain in TT and shut in well investigated gain in TT