Hourly activities:
00:00 - 02:00: Initiated circulation and RIH to tag cement. Down weight 129t. Slowly washed down from theoretical TOC of 2416m to 2426m. 500l/min 11bar. No indication of cement, stable pressure. Continued RIH. Observed increase in pressure to 13-14bar and no change of weight indicating poor cement. Stopped RIH at 2436m, 20m below theoretical TOC. Picked up string 10m and circulated well over shackers at MAX 2000l/min 100bar. Shackers plugged with cement returns. Diverted returns overboard. Continued circulated until no cement observed in returns. Totally circulated 108m3. Meanwhile WOC
02:00 - 02:30: Waited for cement, total of 2 hours from 1st tagging attempt
02:30 - 02:45: Initiated circulation and RIH to tag cement. Down weight 126t. Slowly washed down from 2436m, 500l/min 10bar, pressure dropped to 8 bar after reaching 2438m. Tagged TOC w/ 10t. Confirmed TOC at 2438m below theoretical TOC)
02:45 - 03:00: Released spear from tubing string. Pulled string 2m up, confirmed spear released, up weight of 82t. Top of tubing 389m
03:00 - 03:15: Performed pre-job meeting to l/d 5. 5in DP. Meanwhile performed flowcheck. Stable
03:15 - 05:15: POOH w/ spear and l/d 5. 5in DP
05:15 - 05:30: Performed pre-job meeting to l/d spear BHA
05:30 - 05:45: Removed DP slips, installed master bushing
05:45 - 06:15: L/d spear BHA
06:15 - 06:45: Removed power rollers. Cleaned and cleared rig floor
06:45 - 07:45: P/u wash tool. RIH from surface to 20. 5 m. Jetted wellhead w/ 2200 l/min, 10 RPM, moved string 1m up/down. POOH, l/d jetting tool
07:45 - 08:00: Performed pre-job meeting to p/u MS-T seal retrieval tool
08:00 - 10:00: P/u and m/u MS-T seal retrieval tool and tested same RIH to 20. 5m and engaged MS-T seal retrieval tool. Pulled seal free with 80t overpull POOH from 20,5m and l/d MS-T seal and retrieval tool
10:00 - 10:15: Performed pre-job meeting to p/u cutter BHA
10:15 - 10:30: P/u and RIH cutter BHA to 9,5m
10:30 - 11:00: RIH w/ cutter BHA, positioned knives at 123m
11:00 - 11:30: M/u TDS, took parameters. Cut 10 3/4in surface casing tieback at 123m, 400 l/min 50bar, 80 RPM, 2-10 KNM. Observed good indications of cut pressure drop and reduction of torque
11:30 - 11:45: Flowchecked for 5min, stable. POOH to 9,5m
11:45 - 12:00: L/d cutter BHA
12:00 - 12:15: Performed pre-job meeting to r/u casing tong
12:15 - 13:15: R/u casing tong on the rig floor
13:15 - 13:30: RIH w/ spear and engage in 10 3/4in surface casing hanger, pulled casing to surface
13:30 - 13:45: Performed pre-job meeting to pull and l/d 10 3/4in casing
13:45 - 14:00: Broke out pup joint and casing hanger, l/d same
14:00 - 14:30: Changed BX elevators to BX-4S and PDM head
14:30 - 16:15: POOH and l/d 10 3/4in caing tieback from 103m to surface
16:15 - 17:00: R/d casing tong and changed BX elevators
17:00 - 17:15: Performed pre-job meeting to change saver sub to left hand one
17:15 - 18:30: Placed 3m pup in rotary. Screwed in TDS and broke off saver sub. L/d pup with saver sub on top. RIH 1x stand with left hand DP. M/u left hand saver sub to stand, screwed in TDS and m/u to saver sub
18:30 - 18:45: R/b stand and p/u torque tool
18:45 - 19:15: RIH w/ torque tool on LH drill pipe to 140m
19:15 - 19:30: Washed profile area 1500l/min 9bar. Released tieback adapter w/ 38knm
19:30 - 19:45: Performed pre-job meeting to change handling gear, l/d 5,5in LH DP
19:45 - 20:45: Removed master bushing, installed DP slips. Changed PDM head
20:45 - 21:45: R/b 1x stand of LH DP, l/d 16x joints of LH DP
21:45 - 22:15: L/d torque tool
22:15 - 22:30: L/d 4x singles of LH DP from the stand previously r/b
22:30 - 22:45: Removed DP slips, installed master bushing
22:45 - 23:00: Performed pre-job meeting to change saver sub back to right hand one
23:00 - 00:00: Worked to change saver sub back to right hand one

24-hour summary: tagged cement w/ tubing released spear from tubing, POOH w/ spear and l/d 5. 5in DP retrieved MS-T seal cut 10 3/4in surface tieback pulled and l/d 10 3/4in surface tieback casing released tieback adapter l/d 5,5in LH DP