Hourly activities:
00:00 - 01:15: Continued circulating casing volume and btms up at 1770 LPM 53 bar loss free rate. Meanwhile held pre-job meeting for CMT job.
01:15 - 02:00: Pumped 30 m3 contaminated OBM, 5 m3 base oil and 19 m3 spacer at 1550-1770 LPM 46-53 bar.
02:00 - 03:00: Verified correct line-up by holding and releasing 20 bar through low torque. Mixed and pumped 13,7 m3 1. 90 SG cement slurry at 800 LPM 31 bar.
03:00 - 04:45: Pumped 500 ltrs water, released dart and continued pumping 2500 ltrs water behind cement with CMT unit. Top wiper plug sheared at 170 bar. Zeroed stroke counters for mud pumps. Displaced and sheared BTM wiper plug by pumping OBM at 1200 LPM using rig pumps. Continued displacing cement with 111. 9 m3 OBM at 1770-1500 LPM using mud pumps. Wiper plug sheared at 114 bar 4450 stks. Slowed down rate to 1000 LPM 69 bar approx 4 m3 prior to bump. Bumped plug with 138 bar after pumping 5080 strokes, which gives a pump efficiency of 96. 5 No losses during displacement.
04:45 - 06:00: Equalized pressure with CMT unit and opened lo-torque valve. Pressured up well to 345 bar 15 min to test casing using CMT unit. OK. 1250 ltrs pumped and got 1220 ltrs back. Bleed off from 345 bar to 138 bar and checked for back flow to CMT unit. Lined over to rig pumps and bled off from 138 bar to zero on stand pipe. Checked for back flow. Disconnected CMT hoses and flushed lines.
06:00 - 10:00: Reduced weight on landing string from 5 MT to neutral and released padprt. LD CMT head STD. Dropped sponge balls and flushed string using mud. POOH and LD padprt.
10:00 - 12:00: PU and RIH with lock down sub from surface to 140 m. Landed lock down sub and made 4 1/4 turns CW, torque 1700 NM with neutral weight. Toolstring dropped 7. 7 inches. Attempted to to set lock down sub. No go.
12:00 - 15:00: 1) performed line test from CMT unit to HCR valve, 30/220 bar 5/10 min. OK. 2) pressured up to set lock down sub against closed top pipe ram. No go. 3) checked for possible leaks in toolstring by opening IBOP and monitor gain in trip tank. No leak observed. 4) pressured up to set lock down sub against closed BTM pipe ram. No go. 5) pulled lock down sub 1 m above landing no go. Flushed wellhead with 1100 LPM 15 min. Landed lock down sub and made 4 1/4 turns CW, torque 1700 NM with neutral weight. Toolstring dropped 8 inches. Attempted to set lock down sub. No go.
15:00 - 17:00: POOH with lock down sub assembly from 140 m to OOH. Checked lock down sub and verified space out. OK. LD lock down sub.
17:00 - 18:30: PU and RIH with jet/flush tool from surface to 140 m. Landed out on 140. 03 m.
18:30 - 20:00: Jetted top of 10 3/4" CSG hanger, 750 LPM 42 bar 3 RPM 2 KNM.
20:00 - 21:30: POOH with jet/flush tool from 140 m to OOH. Inspected jetting tool and found indication that tool had not landed out on 10 3/4" CSG hanger.
21:30 - 22:00: RIH with jet/flush tool from surface to 140 m.
22:00 - 23:45: Landed out with jet/flush tool on 10 3/4" CSG hanger with 2 MT. PU and established circulation at 910 LPM 49 bar 3 RPM 2 KNM. Tagged with 2 MT serveral times to clean the CH area. PU 1 m and circulated btms up at 930 LPM 45 bar.
23:45 - 00:00: POOH with jet/flush tool from 139 m to 100 m.

24-hour summary: Released and POOH with CSG running string from 140. 5 m to OOH. LD CMT head and padrt. RIH to 140 m and attempted to install lock down sub. No go. POOH. MU and RIH with jet/flush tool to 140 m to clean top of 10 3/4" CSG hanger area. Re-ran jet/was tool due to poor indication of landing on top of casing hanger. RIH at 40 m to made second attempt to install lock down sub.