WE Report

Lessons Learned

Lessons Learned865


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

DNO
8481 – DNO

Deepsea Yantai Drilling Planning 35/10-13
Kjøttkake
Reservoir section 24/03/2025
Reached TD without signifigent problems. Sampled acc. To plan.
Some pressure point samples . . .

Sander Schaathun / Stig Seland


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DNO
8484 – DNO

Deepsea Yantai Drilling Planning 35/10-13
Kjøttkake
P&A 24/03/2025 3 ½” DP was racked back in due time, but handling such small tubular takes time.

Sander Schaathun / Stig Seland


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DNO
6969 – DNO

Nobel Invincible Drilling Planning 2/6-7 S
Falstaff
P&A 11/11/2024 Attempted to dress off cement after the sample in the UCA cell started to build compressive . . .

Lene Lomeland


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DNO
6878 – DNO

Nobel Invincible HSEQ
NEA Q&A
Planning 2/6-7 S
Falstaff
Other 11/10/2024

Spørsmål angående søknad om tidsaavik på responstid:
1. Mulighet for å minske responstid for . . .

Helene Folkvord / Anniken Meisler



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DNO
6877 – DNO

Nobel Invincible External Environment
Own Experience
Planning 2/6-7 S
Falstaff
Other 10/10/2024 The PSV’s have crew change every 4 weeks meaning that at some point we are not able to meet this . . .

Helene Folkvord / Anniken Meisler



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DNO
6767 – DNO

Nobel Invincible Logistics Planning 2/6-7 S
Falstaff
Top hole 23/09/2024 Excellent planning. Safely executed. Experienced and knowledgeable Expro crews who cooperated good . . .

Lene Lomeland


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DNO
6876 – DNO

Nobel Invincible HSEQ
NEA Q&A
Planning 2/6-7 S
Falstaff
N/A 02/05/2024

Fiskeridirektoratet fraråder at det blir gitt tillatelse til prøveboring. Som begrunnelse vises det . . .

Anniken Meisler / Anniken Meisler



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DNO
6875 – DNO

Nobel Invincible HSEQ
NEA Q&A
Planning 2/6-7 S
Falstaff
N/A 09/04/2024

Planlagt hamring for lederør med lydutsending som starter på et lavt nivå og øker gradvis til . . .

Anniken Meisler / Anniken Meisler



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DNO
5871 – DNO

Deepsea Yantai Planning 25/7-11 S
Norma
01/08/2023 Difficult to see with the ROV at seabed due to poor visibility and loose seabed conduction.

Drilling Engineer / Morten Laget


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DNO
5860 – DNO

Deepsea Yantai Drilling
Own Experience
Planning 25/7-11 S
Norma
Top hole 30/07/2023 One of the stop collars fell of when it was picked up from the boat. When laying down the . . .

Drilling Engineer / Morten Laget


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DNO
5866 – DNO

Deepsea Yantai Drilling
Own Experience
Planning 25/7-11 S
Norma
Surface section 30/07/2023 Difficulties with logistics to separate the joints below 11.5 m and the joints longer due to limited . . .

Drilling Engineer / Morten Laget


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DNO
5111 – DNO

No Rig Marine
PSA Q&A
Planning No well Other 28/03/2023

Er bruk av PosmoorATA innenfor begrensingene gitt i appendiks til klassesertifikatet for Deepsea . . .

Karina Helle / Morten Laget



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DNO
5097 – DNO

Deepsea Yantai Multi Discipline
Own Experience
INTERNAL
Planning 25/7-11 S Other 22/03/2023 Drilling Engineers have been using online software called The Engineering ToolBox. This software . . .

Stian Engvik / Morten Laget


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DNO
4761 – DNO

No Rig Drilling
Own Experience
Planning No well N/A 10/08/2022 In DG1-DG2 rig screening strategy the project landed on 1.5 or Dual derrick rig and all time and . . .

Zol Mollaeian / Sigve K. Næsheim


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DNO
2209 – DNO

Borgland Dolphin External Environment
Own Experience
Planning 2/5-15
Gomez
P&A 06/10/2021 Due to potential WoW it was considered to leave the well and for DNO to join Oceaneering WH cutting . . .

Christina Sæland Rødne / Christina Sæland Rødne



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DNO
2172 – DNO

Borgland Dolphin Subsea
Own Experience
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 01/10/2021 As planned

Lars Solvang / Stig Seland



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DNO
2173 – DNO

Borgland Dolphin Subsea
Own Experience
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 01/10/2021 Weight of the black eagle hose will make alignment to the manifold flushing cap difficult.

Lars Solvang / Stig Seland



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DNO
2188 – DNO

Borgland Dolphin Subsea
Own Experience
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 01/10/2021 As planned

Lars Solvang / Stig Seland



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DNO
2189 – DNO

Borgland Dolphin Subsea
Own Experience
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 01/10/2021 Two lubricator valves installed in the landing string.

Lars Solvang / Stig Seland



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DNO
2190 – DNO

Borgland Dolphin Subsea
Own Experience
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 01/10/2021 As planned

Lars Solvang / Stig Seland



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