WE Report

Lessons Learned

Lessons Learned865


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

DNO
2013 – DNO

Borgland Dolphin Drilling
Experience Transfer Meeting
Operational 2/5-15
Gomez
Top hole 14/08/2021 From among cementers it was decided to disconnect the dust collector before this job. The surge . . .

What does ETM mean?
Drilling Supervisor / Morten Laget


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DNO
2010 – DNO

Borgland Dolphin Drilling
Own Experience
Operational 2/5-15
Gomez
Top hole 12/08/2021 We could not store enough Tuned Light cement on two cmt silos on the rig to get the required volume . . .

Drilling Supervisor / Morten Laget


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DNO
2012 – DNO

Borgland Dolphin Drilling
Own Experience
Operational 2/5-15
Gomez
Top hole 12/08/2021 ROV was only equipped with standard jetting tool with low flowrate, unable to remove larger amounts . . .

Drilling Supervisor / Morten Laget



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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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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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