Hourly activities:
00:00 - 06:30: WOC meanwhile continued working on TDS, aligned saver sub. changed hydraulic hose on TDS retract system inspected saver sub prepared and measured upcoming bhas bled off b-annulus. 2 bar trapped, bled off all pressure performed PMS performed housekeeping at WH deck
06:30 - 07:00: P/u 1 5 1/2" DP stand and RIH w/ tubing from 2508 m to 2549 m. M/u TDS to DP.
07:00 - 07:15: Performed TBT for tagging TOC and leave tubing in well.
07:15 - 08:15: Initiated flow 550 LPM 10 bar. Washed down slowly to 2620 mmd and attempted to tag TOC. Took weight gradually, 8 ton, indicating green cement.
08:15 - 09:00: POOH to 2600 mmd. Circulated 500 LPM 10 bar.
09:00 - 09:45: POOH to 2587 mmd while circulating 500 LPM 10 bar. Increased flow to 1500 LPM 63 bar, circulated b/u while discharging cement contaminated returns.
09:45 - 11:30: WOC while circulating at 500 LPM 10 bar.
11:30 - 12:00: Washed down slowly with 550 LPM 10 bar. Observed pressure slighly increasing to 15 bar. Reduced flow rate to 200 LPM 2 bar. Tagged TOC with 10 ton at 2621 mmd. Set down all tubing weight and disengaged spear.
12:00 - 12:15: B/o TDS dropped 3" drift.
12:15 - 13:00: POOH w/ spear BHA on 5 1/2" DP from 362 m to 15 m. Avg. Tripping speed 600 m/hr.
13:00 - 13:30: L/d single 5 1/2" DP. R/b spear BHA.
13:30 - 13:45: P/u and m/u jet sub.
13:45 - 14:00: RIH w/ jet sub on 5 1/2" DP to 23 m.
14:00 - 14:10: Cleaned MS-T seal assy surface with 1500 LPM 22 bar. Made 3 x passes.
14:10 - 14:20: POOH w/ jet sub on 5 1/2" DP from 23 m to surface.
14:20 - 14:30: L/d jet sub.
14:30 - 14:45: P/u and m/u MS-T seal retrieval tool.
14:45 - 15:30: R/u control lines to MS-T retrieval tool. Function tested retrieval tool.
15:30 - 16:45: RIH with MS-T retrieval tool to 20 m. Set down 2 ton. M/u TDS engaged tool, managed to achieve 2,5 turns left. Ran hydraulic sequence to release MS-T seal.
16:45 - 17:00: Pulled MS-T seal free with 70 ton OP.
17:00 - 17:15: POOH with MS-T retrieval tool and seal assy to surface.
17:15 - 17:45: R/d control lines from MS-T retrieval tool. L/d retrieval tool.
17:45 - 18:00: Cleaned and cleared drill floor
18:00 - 18:30: P/u and m/u cutter BHA for cutting 10 3/4" surface tie-back.
18:30 - 19:00: RIH w/ cutter BHA on 5 1/2" DP from 9 m to 117 m.
19:00 - 19:30: Established parameters 200 LPM 7 bar, 400 LPM 48 bar, 500 LPM 81 bar, 600 LPM 116 bar. 40 RPM 2 to 4 KNM, 80 RPM 2 to 5 KNM, 100 RPM 2 to 6 KNM. Up/down weight 72/68 ton. Positioned cutter at 123 m and cut 10 3/4" tie-back casing, 100 RPM 3 to 8 KNM, 400 LPM 49 bar. Observed pressure drop, indicating casing cut.
19:30 - 19:45: Pulled up while circulating at 500 LPM, observed pressure increasing to 111 bar. Ran in slowly with rotation, observed pressure dropped to 3 bar when knifes entered cut.
19:45 - 20:00: POOH w/ 10 3/4" cutter BHA on 5 1/2" DP from 123 m to surface.
20:00 - 20:15: L/d cutter BHA to HTS.
20:15 - 20:45: P/u and m/u spear BHA from set-back. Inspected grapple.
20:45 - 20:55: RIH w/ 10 3/4" spear BHA on 5 1/2" DP from surface to 25 m. Engaged spear and attempted to pull 10 3/4" surface tie-back casing, 30 ton OP.
20:55 - 21:00: Disengaged spear and POOH to surface. R/b spear BHA.
21:00 - 21:45: P/u 10 3/4" cutter BHA from HTS. Adjusted sweep and physical stop on cutters.
21:45 - 22:15: RIH w/ 10 3/4" BHA on 5 1/2" DP from surface to 123 m. M/u TDS
22:15 - 22:45: Initiated rotation and flow, 100 RPM 2 to 6 KNM, 500 LPM 81 bar. Cut 10 3/4" surface tie-back casing. Observed slight knock in riser and pressure dropped, indicating successful cut. Observed mud like substance on shaker, switched on gas trap. No gas observed.
22:45 - 23:00: Flowchecked well for 10 min prior to POOH, static.
23:00 - 23:15: B/o TDS. POOH w/ 10 3/4" cutter BHA on 5 1/2" DP from 123 m to surface.
23:15 - 23:30: L/d cutter BHA
23:30 - 00:00: Reset and calibrated spinner wrench on IRN.

24-hour summary: WOC attempted to tag TOC WOC additional 2 hours tagged TOC w/10 ton. Released spear and POOH w/ 5 1/2" DP. washed 10 3/4" MS-T seal area retrieved MS-T seal assy cut 10 3/4" surface tie-back retrieved 10 3/4" surface tie-back