Hourly activities:
00:00 - 01:00: Evaluated situation. Discussed situation w/ cementing support onshore organisation. 24 hours WOC by now. Agreed to continue attempting to tag cement
01:00 - 02:30: Continued to wash down from 2398m with 560l/min 20-25bar, observed pressure spikes up to 85 bar. Tagged hard cement at 2456,5m with 12t, 530l/min, 22bar. Length of cement plug 123,5m 2580m)
02:30 - 02:45: Released spear from tubing set down 30ton, 2x turns right, pull up 200m to confirm free. Top of tubing in the well at 1096,5m
02:45 - 04:15: POOH w/ spear BHA on 5,5in DP to surface. Average pulling speed 703m/hour
04:15 - 04:45: POOH w/ spear BHA inspected and r/b same
04:45 - 05:00: Removed PS 21 and installed master bushing
05:00 - 05:15: Performed pre-job meeting for retrieve MS-T surface seal assy
05:15 - 06:45: P/u MS-T seal retrieving tool. M/u to stand and function tested tool
06:45 - 07:00: RIH w/ MS-T seal retrieving tool. Landed of at 20, 5m
07:00 - 07:15: Performed pre-job meeting for retrieve MS-T surface seal assy w/ new crew
07:15 - 08:00: Attempted to engage tool by rotating 5 turns to the left with chain tongs. No go
08:00 - 09:00: Discussed forward plan, removed double from stand above retrieval tool, picked up 1. 5m pup and 3m pup
09:00 - 09:30: Attempted to engage tool by rotating 5 turns to the left using chain tongs. Only able to get approx. 1 ¼ turns
09:30 - 10:00: Rotated tool out and retrieved to surface, inspected same. Marks observed on the outside of the tool
10:00 - 10:30: Evaluated situation
10:30 - 12:00: P/u wash tool, m/u to FOSV then to double and measured in hole. Jetted BOP 1500 l/min, 8. 7 bar, 5 RPM, TQ 0-1 KNM. Function tested BOP
12:00 - 12:15: Continued to jet BOP after function test. 1500 l/min, 8. 7 bar, 5 RPM, TQ 0-1 KNM
12:15 - 13:00: B/o TDS and measured in to top of well head, m/u to TDS and jetted wellhead seal area 1500 l/min, 8. 7 bar, 5 RPM, TQ 0-1 KNM
13:00 - 13:30: POOH with wash tool and lay out same
13:30 - 13:45: Repaired elevator leak. Replaced valve on same
13:45 - 14:00: Transfered MS-T seal retrieval tool to TDS and re-positioned hose spools
14:00 - 15:00: RIH with retrieval tool and attempted to engage tool by rotating 5 turns to the left. Approx. 3,5 3,75 turns
15:00 - 15:30: Released tool and POOH, inspected same. Marks observed on the outside of the tool
15:30 - 17:45: Contacted wellhead support organization regarding forward plan for pulling the MS-T seal. Meanwhile inspect TDS, covered electrical equipment on drill floor in preparation for deluge test. Performed deluge test on rig floor. Crane operator moved equipment to rig floor due to high wind forecast in preparation for next ops. Re-arranged link tilt arms on TDS
17:45 - 19:00: RIH and engaged by rotating the retrieval tool 3,75 turns to the left. Connected hose to pump and energize lock ring and bled off pressure. Then pressured up MS-T seal. M/u TDS and retrieved MS-T seal w/ 87t overpull observed. POOH with MS-T seal
19:00 - 20:30: Released seal assembly from tool. L/d retrieval tool
20:30 - 21:00: Wow due to high winds for crane operations. Meanwhile serviced drilling equipment and performed housekeeping. Prepared work permits for crane work in high winds
21:00 - 21:15: P/u cutter assembly and inspected same
21:15 - 22:00: M/u to 5,5in DP stand and TDS and RIH to position cutters at 23. 6m recorded drilling parameters 300l/min 29bar, 500l/min 90bar, 70t up 65t down
22:00 - 22:15: Cut 10 3/4in surface tie back at 23,6m with 300l/m and 80 RPM 2 12 torque. Good sound indication of successful cut heard on surface
22:15 - 22:30: POOH with cutter from 23. 6m, inspect knives, l/d BHA
22:30 - 23:30: P/u and m/u w/ ITCO spear RIH, took up/down weights 70t up/67t down. Engaged fish
23:30 - 00:00: Released spear from fish and r/b same, l/d fish

24-hour summary: tagged cement plug in 9 5/8in CSG released spear and POOH, leaving 7in TBG in well pulled MS-T seal cut 10 3/4in surface tie back CSG pulled 10 3/4in surface tie back CSG hanger