WE Report

Lessons Learned

Lessons Learned865

My cases
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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
2014 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational 2/5-15
Gomez		 Surface section 14/08/2021 The Franks split bushing spider (SBS) did not fit inside the EMSCO rotary table on Borgland Dolphin.

Get in contact with Franks coordinator in town?
Drilling Supervisor / Morten Laget


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DNO
2015 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Operational 2/5-15
Gomez		 Surface section 14/08/2021 All handling subs had 5 1/2″ size. Had to spend rig time and expose rig crew in red zone changing . . .

Contact all vendors that deliver tools with handling subs to Borgland Dolphin
Drilling Supervisor / Morten Laget


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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
1402 – DNO

 		Borgland Dolphin Subsea
Experience Transfer Meeting		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 07/04/2021 It was difficult to install and hold straight due to handle on the torque tool. It was also . . .

Sturla Jensen / Stig Seland



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DNO
1153 – DNO

 		Borgland Dolphin Multidicipline
Experience Transfer Meeting		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020
Too little time for planning.
Not enough time for examination of the SSBoD.
Risks and mitigating . . .

Actions Required for Oselvar: Secure enough time for planning and optimalization – > 6 . . .
Karina Helle / Morten Laget



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DNO
1155 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020
Initial engineering not completed before select phase started.
Several several MoCs.

Actions for Oselvar: “Secure alignement in the project.
Use the project meetings to aligne
Set . . .
Karina Helle / Morten Laget



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DNO
1157 – DNO

 		Borgland Dolphin Drilling
Experience Transfer Meeting		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 08/09/2020 Onshore spares/stocks were limited landing string sourced 3rd party.

Actions Required for Oselvar: Minimum 6 moths planning time
Identify LLI early
Secure small volume . . .
Karina Helle / Morten Laget



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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
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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