Hourly activities:
00:00 - 00:30: Continued to POOH w/ spear BHA on 5,5in DP from 436 m to 40 m Avgerage tripping speed 800 m/hour
00:30 - 01:00: Pulled spear on surface. Inspected and r/b in derrick same
01:00 - 01:15: Removed DP slips and installed master bushing
01:15 - 01:45: P/u jetting tool and RIH to 20. 6m
01:45 - 02:15: Troubleshoot pump control, unable to control mud pumps from rig floor due to PLC issue. Meanwhile carried out TBT for running pump local for jetting wellhead
02:15 - 02:30: Washed wellhead w/ 1500 l/min 28 bar 1360 strokes pumped
02:30 - 02:45: POOH and l/d jetting tool
02:45 - 04:00: P/u and m/u MS-T seal retrieval tool and tested same
04:00 - 05:00: RIH to 20. 1m and engaged MS-T seal retrieval tool. Pulled seal free with 110t overpull
05:00 - 05:15: POOH from 20m and l/d MS-T seal and retrieval tool
05:15 - 05:45: P/u and m/u 10 3/4in cutter BHA
05:45 - 06:15: RIH w/ 10 3/4in cutter BHA on 5,5in DP to 127 m cutting depth
06:15 - 06:30: Recorded parameters 600 l/min 125 bar, 400 l/min 50 bar, 300 l/min 25 bar, up/down weights 73t/69t
06:30 - 07:00: Cut 10 3/4in tieback casing at 127m 400-600 l/min, 35-50 bar, 3-7 KNM
07:00 - 07:30: POOH w/ 10 3/4in cutter BHA on 5,5in DP, inspected knives, OK, l/d BHA
07:30 - 07:45: P/u spear BHA inspected same
07:45 - 08:00: RIH w/ spear BHA and engaged spear in tieback casing. Pulled fish to surface
08:00 - 08:15: Performed pre-job meeting to r/u casing tong
08:15 - 08:30: Released spear from tieback casing fish. R/b spear in derrick
08:30 - 09:45: R/u casing handling equipment
09:45 - 10:00: Performed pre-job meeting to pull and l/d 10 3/4in casing
10:00 - 12:15: POOH with 10 3/4in tieback casing from 107 m to 0 m
12:15 - 13:00: R/d 10 3/4in casing handling equipment
13:00 - 14:15: Changed to left hand saver sub on TDS
14:15 - 15:15: P/u left hand torque tool with jet sub below M/u torque to 67knm, RIH same on left hand drill pipe from surface to 140m
15:15 - 15:30: M/u TDS to string and washed tieback adapter area w/ 1500 l/min 12 bar
15:30 - 16:00: Engaged and released tieback adapter w/ 15 KNM
16:00 - 16:15: POOH w/ left hand drill pipe from 140m to surface
16:15 - 16:45: Removed left hand saver sub
16:45 - 17:00: L/d torque tool
17:00 - 17:15: P/u and m/u spear BHA
17:15 - 17:45: M/u saver sub to TDS
17:45 - 18:00: RIH w/ spear to 129m, engage spear to tieback adapter fish
18:00 - 18:30: POOH slowly w/ fish on spear to surface
18:30 - 19:00: Released spear and l/d tieback adapter fish
19:00 - 19:15: R/b spear BHA in the derrick. Meanwhile started step rate testing on f-4 well w/ cement unit
19:15 - 19:30: Performed pre-job meeting to handle perforation guns. Meanwhile changed handling gear
19:30 - 20:00: P/u and RIH with perforation guns to 12m
20:00 - 20:30: P/u wild single, 2x x-overs and firing head, m/u same
20:30 - 20:45: RIH w/ perforation BHA to 145m bottom shot depth
20:45 - 21:15: Closed UPR, opened choke. Applied 10 bar on IBOP. Opened IBOP to confirm line up. Filled string. Opened UPR, broke off TDS and dropped 1 3/8 ball in string. M/u TDS. Closed UPR and opened choke. Fired guns with 160 l/min 137 bar. Top shot at 142m, bottom shot at 145m. Continued to circulate w/ 160l/min 2 bar. No gas observed in returns
21:15 - 21:45: Increased pump rate to 1000l/min bar. Observed only water in returns. Circulated 1x bu, gas reading close to 0ppm in fluid and no readings in air. Stoped pumps
21:45 - 22:00: Flowchecked well for 15 min through choke, stable. Meanwhile finished pumpin step rate insection test on f-4 well
22:00 - 22:15: POOH w/ perforation BHA from 145m to 28m
22:15 - 22:45: L/d perforation BHA All shots fired
22:45 - 23:00: Performed pre-job meeting to p/u 9 5/8in casing cutter BHA
23:00 - 23:15: P/u 9 5/8in casing cutter BHA
23:15 - 00:00: RIH w/ 9 5/8in casing cutter BHA to 805m. Average tripping speed 1070m/hour

24-hour summary: POOH w/ spear retrieved MS-T seal assy cut 10 3/4in tieback casing RIH w/ spear and pulled 10 3/4in tieback casing released and retrieved tieback adapter punched below 10 3/4in subsea casing hanger and ventilated annulus m/u and RIH w/ cutter BHA to cut 9 5/8in casing