WE Report

Lessons Learned

Lessons Learned865


Operator Rig Discipline / Origin Project Phase Well Section Date What Happened

DNO
1064 – DNO

Island Innovator Logistics Operational 6507/7-16 S
Canela
Top hole 04/12/2019 Pilot hole challenges required alot of extra Barite, more than what was planned to have onboard the . . .

Johan Kjos-Hanssen


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PGNiG
337 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Top hole 21/10/2019
When running conductor 0.5 m higher stick-up was observed.
Base plan was to hold the conductor . . .


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PGNiG
338 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Top hole 21/10/2019
Slow ROP with 36″ x 42″ BHA, due to keeping neutral point below seabed, it limited the drilling . . .


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PGNiG
339 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Top hole 21/10/2019 Rigged up for conductor running, extra 20 ft mobilized for the operation.


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Faroe
286 – Faroe

Transocean Arctic Drilling Operational 31/7-3 S
Brasse
Top hole 02/10/2019 Drilling 36″ was a challenge – boulders from just below seabed(148 m) to 181 m. Repeated reaming . . .


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Faroe
287 – Faroe

Transocean Arctic Drilling Operational 31/7-3 S
Brasse
Top hole 02/10/2019 Had to lay out one joint of fibreglass innerstring due to not able to M/U connection. No visible . . .


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Faroe
288 – Faroe

Transocean Arctic Drilling Operational 31/7-3 S
Brasse
Top hole 02/10/2019 Had relatively short rig move where operations ended with OBM and next well started with WBM. . . .


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Faroe
289 – Faroe

Transocean Arctic Drilling Operational 31/7-3 S
Brasse
Top hole 02/10/2019 Seabed visibility poor and current high when cementing 30″ conductor. Inclination on bullseyes . . .


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DNO
305 – DNO

Island Innovator Drilling Operational 6507/7-16 S
Canela
Top hole 07/01/2019 Conductor set up early. Had to order out more dispersant chemicals for the 20″ cement job due to . . .


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DNO
306 – DNO

Island Innovator Drilling Operational 6507/7-16 S
Canela
Top hole 07/01/2019 The cement design was updated with reduced lead and increased tail slurry to provide better support . . .


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Faroe
158 – Faroe

Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal
Top hole 28/09/2017 Problems to close the 30″ side door elevator due to shackles. Removed shackles and connected the 500 . . .


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