Hourly activities:
00:00 - 02:00: Changed handling equipment to 5 1/2". L/o weatherford elevator and archer FAC tool. P/u and m/u 13 3/8" casing hanger and RT as per ge vetco instructions.
02:00 - 03:00: Removed PS 30 and installed master bushing. Lowered hanger below rotary. Removed weatherford casing tong.
03:00 - 03:30: RIH with 13 3/8" casing on 5 1/2" HWDP landing string from 2470 m to 2550 m. Performed break load transfer test on drawworks.
03:30 - 04:00: M/u last stand HWDP. Filled string. RIH and circ. W/ 500 l/min, 11 bar. Set down 30 t weight at 2569,5 m. Attempted to pass restriction, pressure increased to 30 bar.
04:00 - 07:00: Picked up to above restriction. Increased flow in steps to 2000 l/min, 25 bar. Washed w/ 13 3/8" casing on 5 1/2" HWDP landing string from 2569 m to 2610 m w/ 2000 l/min/ 25 45 bar.
07:00 - 07:45: P/u cement stand. M/u control lines and hoses. M/u cement stand to landing string. Washed down w/ 500 l/min, 9 bar and landed 13 3/8" casing hanger in 18 3/4" MS-700 wellhead at 2612,3 m.
07:45 - 09:45: Increased flow in steps to 2500 l/min/ 51 bar. Conditioned mud while circulating. Conducted TBT for cement job and tested cement hose prior to cement job. Circulated tot. 210 m3. No losses to formation.
09:45 - 11:15: Pumped 25 m3 1,60 SG spacer with 1900 l/min, 33 bar using rig pumps. Released bottom plug. Mixed and pumped 30 m3 1,92 SG slurry.
11:15 - 13:30: Displaced cement w/ 2500 l/min, 20 28 bar FCP. Bottom plug sheared w/ 130 bar and 7270 strokes eff. Continued to displace as per pump schedule. Bumped top plug after 8643 strokes eff) w/ 100 bar. Held pressure for 2 min.
13:30 - 13:45: Pressure tested casing to 285 bar/ 10 min. Volume pumped 1800 ltr, bled back 1800 ltr. Checked for backflow, OK.
13:45 - 14:45: Sat 13 3/8" seal assembly as per ge vetco instructions. Applied 207 bar to annulus, held pressure for 10 min.
14:45 - 15:00: Pressure tested surface line to 20/345 bar for 5/10 min.
15:00 - 16:15: Attempted to pressure test MS seal assembly to 20/345 bar for 5/10 min. Unable to get good test.
16:15 - 16:45: Opened annular and closed LPR. Re-tested MS seal assembly 20/345 bar 5/10 min, no success.
16:45 - 17:45: Released padprt as per ge vetco instructions. L/d cement head. Installed sponge balls and circulated w/ 3000 l/min/ 30 bar, 2 x string volume.
17:45 - 18:15: POOH with 5 1/2" HWDP landing string and padprt from 138 m to surface.
18:15 - 18:30: Inspected padprt and LIB. L/o running tool.
18:30 - 19:00: Cleaned and cleared rigfloor.
19:00 - 19:45: P/u annulus seal retrieval tool
19:45 - 21:15: RIH with ASRT. Engaged seal assembly with ASRT. Pressured up to 345 bar to enhance seal seating. Attempted to pressure test seal assembly to 345 bar 5min. No success.
21:15 - 21:45: Evaluated situation. Discussed way forward w/ onshore organisation.
21:45 - 22:15: POOH with ASRT and MS seal assembly from 138 m to surface.
22:15 - 22:30: Inspected MS seal assembly. Severe marks on seal body. Re-set and l/o ASRT.
22:30 - 23:00: P/u and m/u ge vetco clean/flush tool.
23:00 - 00:00: RIH with flush tool. Washed 13 3/8" hanger, seal pocket and wellhead w/ 1700 l/min, 35 bar, 5-15 RPM.

24-hour summary: Installed 13 3/8" casing hanger and RIH 13 3/8" on 5 1/2" HWDP landing string. Washed last stand to bottom and landed casing in MS-700 wellhead. Circulated well prior to cementing. Cemented 13 3/8" casing in place. Set MS seal assembly and attempted to pressure test same, no success. POOH with running tool and l/o same. RIH seal assembly retrieval tool, engaged seal and re-tested same w/o success. Pulled MS seal assembly. Ran flush and clean tool and washed hanger, seal pocket and wellhead.