WE Report

Lessons Learned

Lessons Learned865

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

DNO
1916 – DNO

 		Borgland Dolphin Logistics
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 23/06/2021 Cleaning of pulled XMT onshore at base. Major onshore handling operations.

Johan Kjos-Hanssen / Stig Seland



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DNO
1554 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 03/06/2021 Overtorqued connection required cold cutting

Drilling Supervisor / Stig Seland



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DNO
1547 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 29/05/2021 Camera not able to get a 360 view as it was off center

Lars Solvang / Stig Seland



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DNO
1546 – DNO

 		Borgland Dolphin Multi Discipline
Own Experience
INTERNAL		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 27/05/2021 Unstable and sometimes no connection at all. Poor sound quality during meetings with the rig.

Øystein Prytz / Stig Seland



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DNO
1532 – DNO

 		Borgland Dolphin Logistics
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 Other 26/05/2021 Delay on helicpoter with 3,5 hours. People hungry at the heliport and miss out the Lunch onboard the . . .

Johan Kjos-Hanssen / Stig Seland



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DNO
1531 – DNO

 		Borgland Dolphin Logistics
Own Experience		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 21/05/2021 Max PAX during operations landed on 16 PAX in even good flying conditions and personnel was bumped . . .

Johan Kjos-Hanssen / Stig Seland



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DNO
1466 – DNO

 		Borgland Dolphin Well test
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 09/05/2021
The distance between the Archer pump to grease head is 40+ meters, with the hose full of grease it . . .

Drilling Engineer / Stig Seland



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DNO
1456 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-3 HT2
Oselvar		 P&A 03/05/2021 Both sides of the UHG can be used on the TRT but the port side of the UHG comes into conflict with . . .

Drilling Supervisor / Stig Seland



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DNO
1457 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-3 HT2
Oselvar		 P&A 03/05/2021 Concerns were raised that with the HXT landed on the 105 ton skid as planned the bumper bars on the . . .

Drilling Supervisor / Stig Seland



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DNO
1446 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-3 HT2
Oselvar		 P&A 26/04/2021 A week’s work trying to pull completion, high overpulls throughout, over 200 plastic clamps lost . . .

Drilling Supervisor / Stig Seland



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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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