Hourly activities:
00:00 - 01:45: Continued RIH with timelock plug on 5 1/2" DP from 168 m to 409 m. Avg. Tripping speed 138 m/hr. Electrical technician had to override/force singnal into control system to be able to operate PRS.
01:45 - 02:15: M/u TDS and washed down to setting depth, 300 LPM. Recorded up/down weights 78 t 86 ton and free rotational torque weight at 10 RPM 1000 NM 80 ton. Sat timelock plug and closed ball valve according to archer procedure. Pressured up string to 45 bar to verify ball valve closed. Packer mid element at 434,67 m.
02:15 - 02:45: M/u side entry assy.
02:45 - 03:00: Filled well with water with rig pumps. Closed kelly cock, opened LTV and flushed lines from cement unit. Closed flowline valve and filled water above diverter packer element.
03:00 - 03:30: Performed line-up test from cement, 100 bar 5 min. Verified
03:30 - 04:00: Attempted to pressure tested well to 34 bar against timelock plug and diverter packer. Pressured up well in steps and monitored 11 bar 165 ltr 24 bar 56 ltr 26 bar 8 ltr 28 bar 7 ltr 29 bar 3 ltr 30 bar 5 ltr drop observed) 31 bar 9 ltr 32 bar 8 ltr aborted at 32 bar. Pressure dropped and stabilized at 23,5 bar. No good test. Bled off pressure to cement unit.
04:00 - 04:15: R/d side entry assembly.
04:15 - 05:30: POOH with timelock RT on 5 1/2" DP from 424 m to 0 m. Avg. Tripping speed 340 m/hr. L/d RT to deck.
05:30 - 06:00: Cleaned and cleared rig floor.
06:00 - 07:30: R/u for pulling diverter. Held TBT with new crew.
07:30 - 08:15: Installed lifting eyes and bridle. Pulled diverter inserts. 10" diverter inserts released from interlock, fell out and landed off on top of the riser.
08:15 - 09:00: Evaluated situation. Troubleshot to recover 10" inserts.
09:00 - 11:00: Planned and prepared retrieval tool to recover 10" inserts.
11:00 - 11:15: Tested retrieval tool. Good test.
11:15 - 11:45: Installed remaining retrieval tools and prepared for lifting 10" inserts.
11:45 - 12:15: Lifted 10" diverter inserts and recovered same to drill floor. Performed AAR with involved personnel
12:15 - 12:30: Performed TBT for pulling diverter.
12:30 - 13:15: Pulled diverter and r/b same.
13:15 - 13:45: Re-installed master bushings and removed tension lines from riser in moonpool.
13:45 - 16:00: Build sacffolding in moonpool for installing shackles on riser. Meanwhile cleaned and cleared drill floor.
16:00 - 17:15: Installed lifting equipment onto riser. Removed scaffolding in moonpool. Drained the riser.
17:15 - 18:15: R/u and prepared to disconnect and pull riser. Performed TBT for pulling riser. Meanwhile production dept shut-in adjacent wells according to simops procedure.
18:15 - 18:45: Nippled down riser and pulled same.
18:45 - 19:00: Performed TBT with new crew for laying out riser joint.
19:00 - 20:00: L/d surface riser on HTS with crane assist.
20:00 - 20:15: Retrived bore protector, utilising tuggers in TDS.
20:15 - 20:45: Lowered tubing bonnet to XMT deck utilising TDS. Landed tubing bonnet according to vetco instructions. Production dept. Re-stared production according to simops procedure after tubing bonnet landed.
20:45 - 21:15: Blinded off cable penetrator. Installed flange on tubing bonnet. Lined-up cement unit to well by connecting 1/2" hose from moonpool manifold to WH.
21:15 - 21:45: Maersk and halliburton cementer performed line walk to verify line-up. Performed TBT prior to pressure test casing.
21:45 - 22:00: Barried off moonpool and WH area. Filled up well from cement unit. Installed needle valve at WH.
22:00 - 22:30: Closed valve at WH and performed line-up test to 35 bar 100 bar. Bled off pressure to cement unit after good test. Pressured up 10 bar, opened valve at WH and observed pressure drop.
22:30 - 23:00: Pressure tested well to 35 bar against timelock plug and tubing bonnet. Pressured up well in steps and monitored 10 bar 11 ltr 28 bar 33 ltr instant pressure drop to 25,5 bar when stopping pumps) 30 bar 4 ltr drop to 27,4 bar) continued pressuring up at lowest possible rate to reduce pressure drop when stopping pumps due to the 1/2" hose. 32 bar 2 ltr drop to 31,2 bar) 36 bar 2 ltr drop to 35,1 bar) total 41 ltr pumped from 10 bar to 35,1 bar. Bled back same volume to cement unit after good test.
23:00 - 00:00: Disconnect bonnet and prepared to pull same. Performed TBT for pulling tubing bonnet and running surface riser. Removed master bushings. Meanwhile production dept shut-in adjacent wells according to simops procedure.

24-hour summary: Installed back-up timelock plug in 9 5/8" liner. Attempted to pressure test casing without success. POOH with plug RT. Pulled diverter and surface riser. Installed and blinded off tubing bonnet. Lined up cement unit to WH and pressure test well against timelock plug and tubing to 35 bar. Good test.