Hourly activities:
00:00 - 01:00: Inspected 13 3/8" plug and found worn lip seal. Broke out and laid down plug. Traced and made up back up 13 3/8" test plug. Closed doors on LPR.
01:00 - 02:00: RIH with 13 3/8" test plug and landed in surface wellhead at 20 m MD. Lined up cmented unit and filled BOP with seawater through kill line. Closed UPR. Pressure tested BOP against test plug to 20/345 bar 5/10 min. Observed leakage possibly from BSR ram door/bonnet. Bled off pressure.
02:00 - 02:30: Pressured up to 345 bar in order to locate leakage. Located leakage possibly across BSR ram door.
02:30 - 05:00: Drained BOP. Opened BSR doors. Inspected and cleaned seals, found no evident damage. Closed BSR doors.
05:00 - 05:30: Lined up cement unit and filled BOP with seawater. Pressure tested BOP to 345 bar 10 min Observed and found leak to be from the BOP hydraulic system.
05:30 - 06:00: POOH with 13 3/8" test plug and strapped pipe according to vetco instructions.
06:00 - 06:30: Strapped pipe according to vetco instructions. Calculated 10 3/4" landing point to be 20,866 m RT.
06:30 - 07:00: Picked up bowl protector seetting tool and made up to 13 3/8 bowl protector.
07:00 - 07:45: RIH with 13 3/8" bowl protector at 20,44 m MD. POOH and laid down running tool.
07:45 - 08:45: Cleared and tidied drillfloor. Held toolbox talk prior to racking back tie-back tools.
08:45 - 09:30: Picked up and made up 10 3/4" ITCO spear to stand of 5 1/2" DP. Racked back in derrick. Cleaned windows on drillers cabin for safety due to poor visiblity.
09:30 - 10:00: Picked up and made up adjustment sub actuation tool to 5 1/2" DP stand. Racked back in derrick.
10:00 - 10:15: Held toolbox talk for picking up 10 3/4" casing hanger adjustment sub.
10:15 - 11:15: Picked up up 10 3/4" casing hange adjustment sub and hung off in rotary. Made up casing hanger handling tool accroding to vetcc instructions. Laid out assembly.
11:15 - 11:30: Held toolbox talk for running annulus insert retrieval tool.
11:30 - 13:00: Made up annulus insert j-slot retrieval tool and RIH 5 1/2" DP. Strapped pipe and checked serial numbers when running in.
13:00 - 14:00: Landed off at 139,89 m MD and engaged j-slot tool according to vetco instructions. Pulled free annulus insert.
14:00 - 14:30: POOH with annulus insert on 5 1/2" DP and strapped pipe to check measurements. Calculated tie-back adapter no-go to 139,75 m MD.
14:30 - 15:00: Broke out and laid down annulus insert and retrieval tool.
15:00 - 15:30: Picked up and made up jet sub to stand of 5 1/2" DP.
15:30 - 16:30: RIH with jet sub on 5 1/2" DP from surface to subsea wellhead 140 m MD. Made 6 passes 2m across subseawellhead while circualtion at 3000 LPM SPP 22 bar. Displaced production riser to TSW by circualting 3000 LPM 22 bar. Pumped a total of 50 m3 TSW.
16:30 - 17:00: POOH with jetting sub from 140 m MD to surface. Broke and laid out jet-sub.
17:00 - 17:45: RIH with bowl protector pulling tool. Engaged bowl protector. Strapped pipe in and out to 20,44 m m to 10 3/4" casing hanger lading point).
17:45 - 18:15: POOH with bowl protector. Broke and laid out bowl protector and running tool.
18:15 - 22:30: Lifted 10 3/4" casing tong to IR rails. Rigged up BX elevator. Removed master bushing and installed FMS in rotary and hooked up same. Hooked up and function testred casing tong. Re-arranged and tested HTS rollers.
22:30 - 23:00: Picked up 10 3/4" tie-back adapter using tugger and single joint elevator. Removed protector and inspected thread and o-rings. Hung off in FMS and secured with dog collar.
23:00 - 23:30: Held toolbox talk prior to running tie-back casing.
23:30 - 00:00: Ran 10 3/4" c95 60,7# vamtop tie-back casing to 15 m MD.

24-hour summary: Set bowl protector. Made up and racked back ITCO spear and adjustment sub. Retrieved annulus insert. RIH with jet sub and washed subsea wellhead with 3000 LPM, displaced to TSW. Retrieved bowl protector. Rigged up for running 10 3/4" tie-back casing. Ran 10 3/4" tie-back casing, adjustable sub and 10 3/4" casing hanger. Engaged ITCO spear and RIH with tie-back casing to tag depth of 138,8 m MD. Made up tie-back adapter. POOH with ITCO spear.