bengsoon/volve_alpaca huggingface dataset:
Hourly activities:
19:00 - 19:30: Held pre-job meeting with night crew.
19:30 - 00:00: Vessel arrived rig. Unloaded WL equipment from vessel.

24-hour summary: Recieved and spotted equipment
Hourly activities:
00:00 - 03:00: Spotted equipment on pipedeck according to spotting plan. Checked and and verified all equipment recieved.
03:00 - 07:00: Prepared hoses and cables for hookup of surface equipment.
07:00 - 07:30: Held pre-job meeting with day crew.
07:30 - 09:00: Continued to prepare equipment prior to rig up.
09:00 - 12:00: Started to verify equipment according to maersk checklist for hookup to rig.
12:00 - 13:30: Lifted grease injection head and toolcatcher to drillfloor. Fed cable through GIH.
13:30 - 16:00: Maersk electrician connected power to altus and SLB units. Meanwhile, lifted PCE equipment to drillfloor.
16:00 - 16:30: Held toolbox talk with involved personell prior to start building riser.
16:30 - 19:00: Built riser and lubricator section on catwalk using tugger. Meanwhile, finalized and function tested WL winch. Schlumberger built cable head.
19:00 - 23:45: Schlumberger tested primary BHA. Meanwhile, leak tested BOP on stump to 20/345 bar for 5/10 min. Function tested BOP rams.
23:45 - 00:00: Production department started to close in well for handover.

24-hour summary: Prepared WL equipment for rig up. Started to shut-in well.
Hourly activities:
00:00 - 01:30: Altus worked on lubricator and riser section. Meanwhile, schlumberger tested b/u equipment.
01:30 - 02:00: Held toolbox talk prior to lifting BOP to moonpool area.
02:00 - 03:00: Lifted BOP down to moonpool area. Spooled out hoses for BOP, HMV and DHSV to moonpool.
03:00 - 03:30: Attempted to feed cable head through lubricator. Unable to due to small id of x-over in lubricator.
03:30 - 04:00: Schlumberger disconnected bottom of cable head and fed cable through lubricator.
04:00 - 06:00: Connected GIH to lubricator section using tugger and catwalk. Spooled out and connected hoses to GIH. Meanwhile, schlumberger re-connected cable head and began signal test to equipment.
06:00 - 09:00: Waited while production department tested well barriers prior to handover.
09:00 - 09:45: Performed handover meeting between production and intervention. Verified valve status on XMT with production representant.
09:45 - 10:10: Held toolbox talk prior to lifting riser and lubricator section
10:10 - 11:15: Lifted and replaced permanent hatch with WL hatch.
11:15 - 11:40: Removed XMT top cap on well.
11:40 - 12:00: Lifted and connected lower riser to XMT.
12:00 - 13:10: Installed BOP on lower riser. Connected hoses to BOP and function tested same. Verified open close time.
13:10 - 14:00: Rigged up KWV manifold and bleed-off hoses on wellhead.
14:00 - 14:30: Lifted middle riser section and landed on top of BOP.
14:30 - 15:00: Held toolbox talk prior to lifting lubricator to middle riser.
15:00 - 16:30: Lifted lubricator and GIH to middle riser. Installed schlumberger dummy BHA in lubricator and stabbed onto middle riser.
16:30 - 17:00: Connected hoses for operating HMV and DHSV.
17:00 - 18:50: Filled lubricator with MEG from production department. Leak tested rig-up to 20/345 bar for 5/10 min.
18:50 - 19:30: Purged lubricator with n2.
19:30 - 19:50: Verified no liquid in rig-up prior to installing perforation BHA in well. Broke lubricator and l/d schlumberger dummy BHA.
19:50 - 20:15: Held toolbox talk prior to installing perforation BHA in well.
20:15 - 23:00: M/u BHA for perforation run 3/8'' PJN guns w/ 3 1/8'' tufftrac). Leak tested QTS to 20/345 bar 5/10 min. Dumped 40 l starlube in lubricator.
23:00 - 00:00: Opened HMV and pressurized DHSV control line.

24-hour summary: Prepared WL equipment for rig-up. Handover of well. Rigged up WL equipment
Hourly activities:
00:00 - 02:45: Continued to bleed off tubing pressure to 0 bar. Slow progress due to unable to use PWV for bleed off.
02:45 - 03:00: Closed HMV. Broke lubricator and l/d dummy BHA.
03:00 - 03:35: L/d lubricator and GIH on catwalk using rig crane and top drive.
03:35 - 04:00: Connected lifting sub to middle riser section.
04:00 - 04:15: Disconnected lower riser from XMT. Lifted entire riser section and BOP from XMT up to moonpool area.
04:15 - 04:20: Installed top cap on XMT.
04:20 - 04:55: Tested KWV cap and top cap to 20/345 bar for 5/10 min.
04:55 - 06:00: Replaced WL hatch with permanent hatch. Handed well back to production. end of operation

24-hour summary: R/d WL equipment
Hourly activities:
06:45 - 09:30: Waited for supply vessel to arrive with straddle equipment. Meanwhile, skidded rig to f-11.
09:30 - 10:00: Vessel arrived rig with equipment.
10:00 - 12:15: Checked and verified the received straddle equipment OK.
12:15 - 16:30: Waited while production department prepared well for handover. Meanwhile, cleaned and tidy rig floor and pipe deck.
16:30 - 16:45: Received well from production department.
16:45 - 17:30: Replaced permanent hatch with WL hatch
17:30 - 18:00: Inflow tested SV and TKV on XMT. Leak tested KWV to 20/345 bar for 5/10 min.
18:00 - 18:30: Hooked up chiksan manifold on KW and leak tested same to 20/345 bar for 5/10 min.
18:30 - 18:40: Removed top cap on XMT.
18:40 - 19:45: Lifted riser section and BOP from moonpool area and landed on XMT.
19:45 - 20:35: Connected hoses for test pump and local control of DHSV and HMV on XMT.
20:35 - 20:45: Held toolbox talk prior to lifting lubricator and GIH.
20:45 - 21:20: Lifted lubricator and GIH from catwalk and hung off same above riser section on drill floor.
21:20 - 22:45: M/u BHA for run w/ tractor) in lubricator. Added 80 l starlube in riser before stabbing lubricator. Filled lubricator with MEG. Attempted to leak test rig-up to 20/345 bar for 5/10 min. Dicovered leakage in GIH due to error in grease pump.
22:45 - 00:00: Waited while altus and maersk mechanic fixed grease pump.

24-hour summary: Received well from production. Rigged up WL equipment. Unable to leak test rig-up.
Hourly activities:
00:00 - 00:45: Waited for altus and maersk mechanic to fix grease pump. Achieved good test of 345 bar on lubricator, but pump still not working as it should. Grease pump stroke increased rapidly due to pump not able to deliver enough grease pressure.
00:45 - 01:00: Attempted to open HMV and equalizing manifold to pressure up lubricator with n2 and displace starlube and MEG into well. Unable to open HMV due to error in HMV pump.
01:00 - 02:00: Waited while altus fixed HMV pump. Most likely caused by air in pump system.
02:00 - 02:35: Opened HMV and injected n2 in lubricator and bullheaded MEG/STARLUBE mix into well. Meanwhile, grease pump started to work properly again.
02:35 - 02:55: Closed HMV and bled off pressure in lubricator.
02:55 - 03:05: Broke lubricator and added 80 l starlube in riser.
03:05 - 03:30: Stabbed lubricator and filled rig-up with MEG. Attempted to leak test rig-up, but grease pump was unable to deliver grease pressure.
03:30 - 08:30: Altus worked on grease pump issue with maersk mechanic and electrician.
08:30 - 14:00: Grease pump OK. Waited for approval from onshore organisation if OK to RIH.
14:00 - 14:30: Leak tested lubricator to 20/345 bar for 5/10 min. Opened HMV
14:30 - 16:00: Equalized and opened DHSV. WHP 62 bar. Observed leakage in o-ring on x-over between XMT and lower riser.
16:00 - 17:55: Closed DHSV and bled down pressure in tubing to 3 bar.
17:55 - 18:50: Inflow tested DHSV to 59 bar DP for 30 min.
18:50 - 19:55: Bled off remaining pressure in tubing to 0 bar
19:55 - 20:50: Closed HMV and purged lubricator with n2.
20:50 - 21:30: Broke lubricator and l/d BHA w/ tractor) on drill floor.
21:30 - 22:10: Disconnected lower riser from x-over and liftet riser section and BOP using top drive with double securing. Changed o-ring on x-over and stabbed riser back onto x-over.
22:10 - 22:20: Disconnected XMT from x-over and liftet riser section and BOP using top drive with double securing. Changed o-ring on x-over and stabbed riser back onto XMT. One of the o-rings had some small marks.
22:20 - 22:40: Closed shear ram on BOP and leak tested between SV and BOP to 200 bar for 10 min.
22:40 - 23:10: Lifted lubricator and GIH and hung it off above riser section using rig crane and top drive.
23:10 - 00:00: M/u BHA for run w/ tractor).

24-hour summary: Waited for repair of grease pump. R/d WL equipment and changed o-rings in x-over. R/u WL equipment.
Hourly activities:
00:00 - 01:15: Stabbed on lubricator and leak tested rig-up to 20/345 bar for 5/10 min using 100 MEG.
01:15 - 02:10: Opened HMV. Equalized and opened DHSV. WHP 59 bar.
02:10 - 04:45: RIH w/ run straddle-resolve-tufftrac MAX od 5. 63" straddle) from surface to hud at 2830 m. Performed PU every 500 m. Depth PUW 500 3000 1000 3650 1500 4650 2000 5250 2500 6550
04:45 - 07:00: Activated tractor and RIH with tractor from 2830 m to 3580 m. Average running speed 9 m/min. WHP 63 bar.
07:00 - 07:35: Continued RIH with tractor activated from 3580 m to 3735 m. Average running speed 8 m/min.
07:35 - 13:00: Performed 8 correlation passes in interval 3730 3640 mmd. Experienced severe stick-slip and difficulties getting on depth with correlation log.
13:00 - 14:30: Made 2 attempt to position BHA at setting depth by logging up from 3720 mmd. Slightly off-depth from correlation log, unable to position straddle within desired uncertainty margin. Positioned BHA on third pass by logging up from 3720 mmd to 3766. 8 mmd.
14:30 - 15:00: Set straddle across interval 3674. 4 3685. 0 mmd. Lost 2000 lbs immediately. Tagged straddle with tractor to verify set. WHP 67 bar.
15:00 - 17:25: POOH from 3765 mmd to surface. Average pulling speed 30 m/min. WHP 69 bar.
17:25 - 18:45: Closed and inflow tested SV and HMV. Purge riser with n2.
18:45 - 19:05: Performed tool-box talk on drillfloor prior to l/d BHA.
19:05 - 19:30: Broke lubricator. L/d BHA on deck.
19:30 - 20:45: Checked cable head and tractor for next run.
20:45 - 20:55: Performed tool-box talk on drillfloor prior to m/u BHA.
20:55 - 21:35: M/u BHA for run straddle-resolve-tufftrac).
21:35 - 22:05: Stabbed on lubricator and tested QTS to 20/345 bar for 5/10 min.
22:05 - 22:25: Equalized and opened HMV and SV. HW 2280 lbs. WHP 71 bar.
22:25 - 00:00: RIH w/ run straddle-resolve-tufftrac MAX od 5. 63" straddle) from surface to 2050 mmd. Performed PU every 500 m.

24-hour summary: Tested RU. Opened well and RIH to 2830 m. Tractored down to 3735 mmd. Made multiple correlation passes. Set straddle across interval 3674. 4 3685 mmd. POOH and l/d BHA. M/u BHA and RIH.
Hourly activities:
00:00 - 00:35: Continued RIH from 2050 mmd to hud at 2830 mmd. Performed PU every 500 m. Depth PUW 500 3000 1000 3530 1500 4500 2000 5200 2500 6200
00:35 - 02:10: RIH with tractor activated from 2830 m to 3490 mmd. Average running speed 9 m/min.
02:10 - 04:45: Correlated multiple times across interval 3525 3470 mmd. Experience stick-slip and high tension maximum 9500 lbs), which affected logging quality.
04:45 - 05:05: Positioned straddle with top element at 3474. 5 mmd. Verified depth with petec and picked up 1. 5 m to 3473 mmd to have straddle elements symmetrical over perforations.
05:05 - 05:35: Set straddle across interval 3473. 0 3483. 5 mmd. Lost appr. 3400 lbs on surface tension, head tension dropped 1000 lbs. Completed setting sequence and tagged straddle with tractor to verify set. WHP 77 bar.
05:35 - 07:40: POOH from 3484mmd to surface. Average pulling speed 30 m/min.
07:40 - 09:00: Closed and inflow tested HMV and SV. WHP 80 bar.
09:00 - 10:00: Closed DHSV and bled of pressure above through PWV.
10:00 - 11:45: Inflow tested DHSV to 0. 01 bar 30 min
11:45 - 12:15: Closed HMV and purged lubricator through XT-CROSS with n2.
12:15 - 12:35: Performed tool-box talk prior to l/d BHA on drillfloor.
12:35 - 13:10: Broke lubricator. L/d BHA on drillfloor.
13:10 - 13:40: L/d upper lubricator section and GIH to catwalk.
13:40 - 13:45: Performed tool-box talk prior to lifting riser of well.
13:45 - 14:40: Disconnected and lifted lower lubricator section above WL BOP to drillfloor. Lifted WL BOP from hatchdeck to PCE container. Lifted riser to cantilever deck.
14:40 - 16:15: Installed top cap and KW cap. Rewound all BOP and PCE hoses. Installed permanent hatch.
16:15 - 17:45: Leak tested top cap and KW cap to 20/345 bar for 5/10 min. Meanwhile split lubricator on drillfloor.
17:45 - 18:45: Checked valve status with production operator and cleaned wellhead area. Prepared handover documention and handed well back to production dep.
18:45 - 00:00: Packed equipment and prepared for backload.

24-hour summary: Correlated and set straddle. POOH. L/d BHA and r/d WL equipment.
Hourly activities:
00:00 - 11:00: Packed equipment and prepared for backload. Cleaned drillfloor and cantilever.
11:00 - 17:00: Performed are inspection with barge engineer. Cleaned and tidied offices and workspace. Demobilized all personell. End of operation

24-hour summary: Packed equipment. Cleaned workspace. Demobilized personell.
Hourly activities:
05:45 - 06:00: Performed prejob meeting to skid cantilever
06:00 - 06:30: Skidded cantilever onto f-11 slot, 3m to starboard
06:30 - 07:00: Performed after skid jobs and cleared in moon pool area
07:00 - 12:00: Removed production flow line from f11b. Meanwhile l/d HPDR to cantilever, r/d diverter chains and installed elevators, spotted WL equipment on rig floor, prepared for r/u manifolds and hoses to XT
12:00 - 13:00: Continued with preparations and r/u WL to r/u and check chicksan manifolds) Meanwhile pressure tested blind flange on production wing valve
13:00 - 15:00: Removed the fox hole and started to lower the wire line BOP into moon pool, continued with r/u chicksan manifolds on x-mas tree.
15:00 - 18:00: R/u top hatches in the moon pool. Meanwhile continued with lowering the WL BOP and positioning in moon pool. Lowered hoses down to WL BOP
18:00 - 18:15: Performed pre-job meeting to remove XT cap and install lower riser and WL BOP
18:15 - 19:30: Removed XT cap and installed lower riser
19:30 - 19:45: Performed pre-job meeting to install WL BOP
19:45 - 21:30: Lifted and installed WL BOP, installed hoses
21:30 - 23:00: Pressure tested bleed off manifold. 20/345bar 5/10 min. Meanwhile p/u WL riser, performed housekeeping on rig floor, performed maintenance on gas trap in shaker
23:00 - 00:00: Attempted to pressure test lower riser and WL BOP. Observed leak in the connection between lower riser and XT. Drained riser and lifted lower riser and WL BOP from XT. Secured work place. Inspected connection. Observed scratches on the internal sealing face on the XT side

24-hour summary: skidded cantilever onto slot f-11 r/u WL equipment attempted to pressure test lower WL riser and WL BOP
Hourly activities:
00:00 - 02:00: Evaluated situation. Located replacement x-over on f-04 well. Meanwhile opened BOP on stump and serviced drilling equipment
02:00 - 04:00: Waited for production to prepare paperwork, isolate f-4 and bleed off pressure below tree cap. Meanwhile removed damaged x-over from f-11b XT. Built lubricator on rig floor
04:00 - 07:00: Attempted to disconnect tree cap from x-over on f-4. No-go. Meanwhile opened and inspected BOP for cement
07:00 - 07:30: Removed x-over from the XT and moved same to welders shop to attempt to release tree cap from x-over
07:30 - 09:30: Release tree can from the x-over in the welders shop with help of heating
09:30 - 10:00: Installed x-over on XT on f-11b well
10:00 - 10:30: Installed lower riser and WL BOP on XT
10:30 - 11:30: Attempted to pressure test of bleed off manifold and connection on WL lower riser to XT, 20/345bar 5/10 min. Observed leak on bleed off manifold
11:30 - 12:15: Troubleshoot leak on bleed off manifold
12:15 - 12:45: Performed pressure test of bleed off manifold and connection on WL lower riser to XT, 20/345bar 5/10 min
12:45 - 13:00: Performed pre-job meeting to install riser and lubricator
13:00 - 13:45: Installed cover under WL BOP. Installed riser
13:45 - 14:00: Changed handling equipment. Installed WL lift equipment
14:00 - 15:15: Lifted lubricator, m/u setting tool. Moved safety pin in sheave under elevator
15:15 - 15:45: Installed lubricator, m/u plug BHA
15:45 - 16:45: Filled riser and lubricator with 50/50 MEG. Pressure tested WL rig up to 20/345 bar 5/10 min using cement pump
16:45 - 17:00: Performed pre-job meeting to bullhead well to sea water
17:00 - 17:15: Closed SV, opened HMV. Pressured up DHSV control line to 520bar. Confirmed line up. Pumped 3m3 of 50/50 MEG w/ cement unit.
17:15 - 17:45: L/u to rig pump. Pumped 10 m3 wash pill w/ 1200 l/min 124 bar
17:45 - 21:00: Bullheaded 249 m3 sea water w/ 1300 l/min 120 bar. Standpipe pressure slowly decreased and stabilised at 68 bar. Stopped pumps, siwhp 35bar. Meanwhile performed TBT to RIH w/ deepset barrier plug
21:00 - 21:15: Pumped 10m3 50/50 MEG w/ cement pump, 1300l/min 80bar. Closed KV on XT
21:15 - 23:45: Equalized and opened SV. RIH w/ run deep set barrier plug to 2838 m. Average running speed 35 m/min. Tool string stopped at 2838 m
23:45 - 00:00: POOH from to 2700 m

24-hour summary: r/u WL pressure control equipment bullheaded sea water into the well RIH w/ deep set barrier plug
Hourly activities:
00:00 - 02:00: RIH from 2700m. Tool string stopped at 2876m. POOH and RIH several times, worked gradually down to setting depth.
02:00 - 02:30: Correlated BHA across interval 3030 3092 m Set plug with mid packer element at 3083 m Lost 300 lbs of weight after setting sequence was complete. Tagged plug
02:30 - 04:15: POOH from 3083 m to 0 m Average pulling speed 35 m/min
04:15 - 07:30: Pressure tested me550-700 plug and SV to 20/265bar for 5/10min. Bled off pressure in tubing to 10bar to closed drain. Inflow tested deepset barrier plug for 30 min. OK. Bled off remaining pressure in tubing to closed drain. Meanwhile continued to pressure test BOP.
07:30 - 07:45: Performed pre-job meeting to r/d BHA
07:45 - 08:15: Broke lubricator and l/d BHA Meanwhile serviced drilling equipment and continued with testing BOP
08:15 - 09:00: Built new cablehead.
09:00 - 10:00: M/u BHA, tested DECT cutter and connected cable head. Installed lubricator
10:00 - 11:00: Leak tested QTS to 20/345 bar for 5/10 min. Bleed down well pressure from 32bar to 1 bar. Opened SV
11:00 - 12:45: RIH w/ cutter BHA to 3065 m. Running speed 35 m/min.
12:45 - 14:00: Correlated across interval 3004 3065 m Positioned cutter at 3055 m. Performed cut, tubing in compression. Tool stalled out. Retracted anchors
14:00 - 15:30: POOH with w/l Average pulling speed 35 m/min
15:30 - 16:30: Closed SV and leak tested tree/cross to 345 bar.
16:30 - 17:30: Broke off lubricator and l/d tool string
17:30 - 18:45: M/u tool string w/ 572-700 me plug installed lubricator. Pressure tested QTS to 20/345 bar for 5/10 min. OK
18:45 - 20:15: L/u to pressure up tubing. Pressured up tubing to confirm cut. Pressure went up to 90 bar, then dropped to 1 bar. Observed 0. 5 bar increase in annulus pressure. Continued to pump slowly with cement unit down tubing. Pressure increased both in tubing and annulus which indicated communication to annulus. Stopped pumping w/ 9 bar in well. Bled off tubing pressure to 3 bar and open SV
20:15 - 20:30: RIH w/ shallow set plug to 256 m. Average running speed 35 m/min.
20:30 - 21:00: Correlated BHA across interval 229 276 m Set plug with mid packer element at 246 m. P/u weight before/after setting 884/484 lbs. Tagged plug
21:00 - 21:30: POOH from 246 m to 0 m Average pulling speed 35 m/min. Confirmed tool string in tool catcher and closed SV Meanwhile held TBT for pressure testing shallow plug
21:30 - 22:15: Lined up and tested shallow set barrier plug to 20bar/300bar for 5/10min. Bled off pressure to closed drain. Meanwhile TBT for rigging down wireline
22:15 - 23:00: Drained lubricator and riser and purged w/ n2. Meanwhile disconnected WL BOP hoses
23:00 - 00:00: L/d lubricator, tool string, r/d sheaves

24-hour summary: installed deepset barrier plug. Pressure tested and inflow tested same cut 7in tubing above production packer instaled shallow set barrier plug. Pressure tested same started r/d WL pressure control equipment
Hourly activities:
00:00 - 00:30: Installed cementing hose, pressure tested same to 250bar for 3 min.
00:30 - 00:45: Performed pre-job meeting for cement job
00:45 - 02:00: Balanced cement plug m 2850 m mixed and pumped 9,2 m3 of 1,9 SG cement slurry, 600 l/min. Displaced the cement to the rig floor with 2900 l of drill water. Zeroed volume counters. Displaced the cement with 46 m3 strokes) of SW, 2000 l/min/ 40 bar. Pulled out of cement to 2850m at 4 min/stand. Theoretical TOC 2850 m MD.
02:00 - 04:15: Installed sponge ball. Pumped 10m3 hi-vis at 1700l/min 65 bar. Circulated 3000 l/min/ 140 bar. Held TBT for p/u BOP wash tool
04:15 - 06:00: POOH and r/b 1x stand. Installed closed FOSV and BOP wash tool, made 10x passes in BOP and well head at 1500 LPM 12 bar, operated rams and annular once
06:00 - 07:00: POOH from 2829m to 2550m. Average pulling speed 280m/hour
07:00 - 07:15: Performed pre-job meeting to r/u casing handling equipment
07:15 - 08:00: Removed dril pipe slips, installed casing slips. Removed CL clamp
08:00 - 09:00: R/u casing tong
09:00 - 09:30: Broke off swedge. Changed handling equipment in elevator. M/u FOSV to swedge
09:30 - 15:45: POOH with 7in tubing from 2550m to 1944m. Average pulling speed 8,2 joints/hour
15:45 - 16:00: Performed pre-job meeting to r/d casing handling equipment
16:00 - 17:15: R/d casing handling equipment. Cleaned and cleared rig floor
17:15 - 17:45: Serviced prss
17:45 - 21:00: Located and repaired/changed leaking hose on aft PRS
21:00 - 21:15: P/u and b/o FOSV from tubing swedge
21:15 - 21:45: P/u spear assembly and engaged into 7in tubing at RKB. RIH on DP from 1944m to 1978m
21:45 - 22:00: Removed master bushings and install DP slips
22:00 - 23:00: Continued to RIH w/ tubing on spear from 1978m to 2810m. Average running speed 832m/hour. Meanwhile carried out TBT for pressure testing rig up of pumping lines to x-mas tree for slop injection
23:00 - 23:30: M/u TDS and washed down with 550 l/min 15bar from 2810m, tagged TOC at 2853. 4m w/ 10t. Release spear from tubing by rotating 2x turns clockwise. Top of tubing left in the well at 909m. Meanwhile prepared to test chicksan lines to x-mas tree on f-4
23:30 - 00:00: POOH w/ spear BHA on 5,5in DP from 909 m to 436 m Avgerage tripping speed 950 m/hour

24-hour summary: placed balanced cement plug in 9 5/8in casing pulled and l/d 600m of tubing RIH w/ tubing on spear, tagged cement released spear and left tubing in the well