WE Report

Lessons Learned

Lessons Learned865

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

DNO
1158 – DNO

 		Borgland Dolphin C&P
Experience Transfer Meeting		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020 A lot of POs and Invoices.

Actions Required for Oselvar: Ensure contract strategy is known within the team
Karina Helle / Morten Laget



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DNO
1159 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Reporting A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020
Reduced operational efficiency due to poor weather.
Developed a method to lay out completion . . .

Actions Required for Oselvar: Plan for lay out of completion tubulars
Secure efficient operations . . .
Karina Helle / Morten Laget



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DNO
1160 – DNO

 		Borgland Dolphin Multidicipline
Experience Transfer Meeting		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020
Site visit and good communication.
Good rig-to-platform interface.
High level of support during . . .

Actions Required for Oselvar: Plan for site visits
Interface management
Proper facilitation of . . .
Karina Helle / Morten Laget



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DNO
1161 – DNO

 		Borgland Dolphin HSEQ
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020 Low reactive safety figures.

Actions Required for Oselvar: Look into a system for follow up of safety performance
Karina Helle / Morten Laget



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DNO
1162 – DNO

 		Borgland Dolphin Multidicipline
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020
Efficient switch to suspension mode.
Flexibility due to Covid-19.

Actions Required for Oselvar: Prepare for contingencies
Karina Helle / Morten Laget



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DNO
1163 – DNO

 		Borgland Dolphin Logistics
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020
Experience transfer meeting, Schooner & Ketch: Efficient mibilisation and backload
Minimal best . . .

Karina Helle / Morten Laget



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DNO
1164 – DNO

 		Borgland Dolphin Multidicipline
Experience Transfer Meeting		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020

Actions Required for Oselvar: “- Internal requirements for P&A operations
– DNO’s ability to . . .
Karina Helle / Morten Laget



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DNO
1236 – DNO

 		Borgland Dolphin Other
PSA Findings		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 20/11/2019

Karina Helle / Morten Laget


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DNO
1233 – DNO

 		Borgland Dolphin Other
PSA Findings		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 08/10/2019

Karina Helle / Morten Laget


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DNO
1237 – DNO

 		Borgland Dolphin Other
PSA Findings		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 22/03/2018

Karina Helle / Morten Laget


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DNO
1234 – DNO

 		Borgland Dolphin Other
PSA Findings		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 23/11/2017

Karina Helle / Morten Laget


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DNO
1235 – DNO

 		Borgland Dolphin Other
PSA Findings		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 08/06/2017

Karina Helle / Morten Laget


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DNO
1232 – DNO

 		Borgland Dolphin HSEQ
PSA Findings		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 11/11/2016

Karina Helle / Morten Laget


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DNO
1231 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 06/06/2012 DONG handover documentation: The OCG 15 section 8.51 states to pump TSW when pressure testing the . . .

Use normal SW, this is available at the cement unit. The fluid will anyway be bleed back after . . .
Karina Helle / Morten Laget


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DNO
1229 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 12/05/2012 DONG handover documentation: Confusion due to joints marked with two different joint numbers (in . . .

If reuse of pipe: Hide old joint number with paint and mark with new number. Use either white or . . .
Karina Helle / Morten Laget


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DNO
1230 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 12/05/2012 DONG handover documentation: Again challenges where seen due to backflow when RIH on DP / HWDP. . . .

In future include a flapper valve in the running string. Either below hanger setting tool (just . . .
Karina Helle / Morten Laget


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DNO
1228 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 11/05/2012 DONG handover documentation: When drilling 8-1/2″ with 9-1/4″ underreamer a section of the hole was . . .

When circulating at TD, position string so calliper can verify ID’s above and below UR shoulder. If . . .
Karina Helle / Morten Laget


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DNO
1222 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 Production section 06/05/2012 DONG handover documentation: Due to LWD tool failures on previous reservoir sections it was decided . . .

Include mud cooler in future reservoir sections with high temperature.
Karina Helle / Morten Laget


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DNO
1223 – DNO

 		Borgland Dolphin HSEQ
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 Production section 06/05/2012 DONG handover documentation: Due to LWD tool failures on previous reservoir sections it was decided . . .

Include mud cooler in future reservoir sections with high temperature.
Karina Helle / Morten Laget


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DNO
1224 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 Production section 06/05/2012 DONG handover documentation: Due to LWD tool failures on previous reservoir sections it was decided . . .

Include mud cooler in future reservoir sections with high temperature. Alternative larger coolers on . . .
Karina Helle / Morten Laget


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