WE Report

Lessons Learned

Lessons Learned865


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

DNO
1432 – DNO

Borgland Dolphin External Environment
NEA Q&A
Planning 2/5-15
Gomez
23/04/2021

Lack of justification why BO rates are lower in ST than MB, as the ST is 500 m deeper and length of . . .

Christina Sæland Rødne / Morten Laget



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DNO
1433 – DNO

Borgland Dolphin External Environment
NEA Q&A
Planning 2/5-15
Gomez
23/04/2021

Change in regulation §66 – contingency chemicals does not include chemicals used for lost . . .

Christina Sæland Rødne / Christina Sæland Rødne



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DNO
1434 – DNO

Borgland Dolphin External Environment
NEA Q&A
Planning 2/5-15
Gomez
23/04/2021

Subunit C in PL006C not available in Brønnøysundregisteret.

Christina Sæland Rødne / Christina Sæland Rødne


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DNO
1435 – DNO

Borgland Dolphin External Environment
NEA Q&A
Planning 2/5-15
Gomez
23/04/2021

Hearing comment from Directorate of Fishery: The ERACA lacks information about fishing/fishery . . .

Christina Sæland Rødne / Christina Sæland Rødne



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DNO
1436 – DNO

Borgland Dolphin External Environment
NEA Q&A
Planning 2/5-15
Gomez
23/04/2021

Hearing comment from Directorate of Fisheries: The ERACA/AfD lack information about sea mammals that . . .

Christina Sæland Rødne / Christina Sæland Rødne



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DNO
1425 – DNO

Borgland Dolphin Drilling
Own Experience
Operational A-3 HT2
Oselvar
P&A 20/04/2021
Total planned well volume was 150 m3 (tubing 50 m3, annulus 100 m3). After pumping 81 m3 the rig . . .

Drilling Supervisor / Stig Seland



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DNO
1426 – DNO

Borgland Dolphin Drilling
Own Experience
Operational A-3 HT2
Oselvar
P&A 20/04/2021
Evaluated rig-up and HXT valve and BOP status. Changed HXT valve status to the following: opened LPR . . .

Drilling Supervisor / Stig Seland



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DNO
1427 – DNO

Borgland Dolphin Drilling
Own Experience
Operational A-3 HT2
Oselvar
P&A 20/04/2021
Optimised process as follows:
Lined up rig BOP Lower Kill line to rig choke manifold and . . .

Drilling Supervisor / Stig Seland



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DNO
1428 – DNO

Borgland Dolphin Drilling
Own Experience
Operational A-3 HT2
Oselvar
P&A 20/04/2021
Ran tubing cutter in one assembly to avoid arming tool after assembling in sections.
Near perfect . . .

Drilling Supervisor / Stig Seland



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DNO
1429 – DNO

Borgland Dolphin Drilling Operational A-3 HT2
Oselvar
P&A 20/04/2021 Operations completed successfully, but forgot to flush lines from SFT to bleed-off package with . . .

Drilling Supervisor / Stig Seland



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DNO
1437 – DNO

Borgland Dolphin HSEQ
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Hvordan samordner operatør og boreentreprenør behov for å gjennomføre fortløpende . . .

Karina Helle / Morten Laget


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DNO
1438 – DNO

Borgland Dolphin HSEQ
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Hvilke tiltak har operatør iverksatt for å sikre at operatørs og annet 3. parts utstyr tatt ombord . . .

Karina Helle / Morten Laget


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DNO
1439 – DNO

Borgland Dolphin HSEQ
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Hvilke rutiner er etablert for å formidle resultater fra arbeidsmiljøkartlegginger eller . . .

Karina Helle / Morten Laget


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DNO
1440 – DNO

Borgland Dolphin Marine
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Hva gjøres for å unngå dannelse av martensitt i overflatene på ankerkjettingene?

Karina Helle / Morten Laget


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DNO
1441 – DNO

Borgland Dolphin Marine
PSA Q&A
Planning 2/5-15
Gomez
Other 16/04/2021

Vi ber om en bekreftelse på at vanndypet er innenfor begrensningen i sertifikatene

Karina Helle / Morten Laget


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DNO
1442 – DNO

Borgland Dolphin Marine
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Vi ber om en bekreftelse på at dere for operasjonsdypgangen har beregnet forankringen for de . . .

Karina Helle / Morten Laget


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DNO
1443 – DNO

Borgland Dolphin Marine
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Hva skal gjøres for å unngå torsjon i kjettingene både under operasjon og under bruk av . . .

Karina Helle / Morten Laget


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DNO
1444 – DNO

Borgland Dolphin Marine
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Vi ber om en kopi av deres dokumentasjon på at polyestertauene er rotasjonsfrie.

Karina Helle / Morten Laget


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DNO
1445 – DNO

Borgland Dolphin HSEQ
PSA Q&A
Planning 2/5-15
Gomez
N/A 16/04/2021

Utdrag av rapport /66/ DNO, 2021. P968-DNO-D-RA-0004 Rig intake report mhp. beredskapsrelaterte . . .

Karina Helle / Morten Laget


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DNO
1420 – DNO

Borgland Dolphin Subsea
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 15/04/2021 Unable to jar upper crown plug free. POOH and changed to hydraulic jar. Jarred upper crown plug free . . .

Drilling Supervisor / Stig Seland



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