WE Report

Lessons Learned

Lessons Learned865

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

DNO
2201 – DNO

 		Borgland Dolphin Completion
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 04/10/2021 Clamps holding the control lines (polyoil clamps) had disintegrated.

Lars Solvang / Stig Seland



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DNO
2203 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 04/10/2021
The point load on the boat deck was higher than allowed and 4 x 1m2 steal plates was needed under . . .

Lars Solvang / Stig Seland



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INEOS
1530 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Operational PL937
Fat Canyon		 N/A 02/10/2021 Difficulty accessing BHA drawings on SharePoint during rig move due to poor internet connection.

/



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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
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
2191 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 01/10/2021 Pulled landing string and run a tubing hanger running tool on drill pipe. Pull the completion with . . .

Lars Solvang / Stig Seland



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DNO
2192 – DNO

 		Borgland Dolphin Wireline / Slickline
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 01/10/2021 Pulling HXT crown plugs with slickline using a mechanical jar was not successful. Changed out to a . . .

Lars Solvang / Stig Seland



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DNO
2130 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 P&A 19/09/2021 1 hr extra rig time was unnecessarily spent to make up x-over to the RT before it could be made up . . .

Drilling Supervisor / Morten Laget


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DNO
2111 – DNO

 		Borgland Dolphin Completion Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 14/09/2021 Disintegrated control line clamps and loose control lines increased the required overpull to be able . . .

Øystein Prytz / Stig Seland


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DNO
2099 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Production section 29/08/2021
The NORM instrument was found finally found on the drillfloor, however in an unmarked black . . .

Drilling Engineer / 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
2004 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 27/07/2021
Franks tong was moved into the drill floor from the starboard tool landing are on the skate through . . .

Drilling Supervisor / Stig Seland



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DNO
1970 – DNO

 		Borgland Dolphin Drilling Operational A-3 HT2
Oselvar		 P&A 05/07/2021 The 9 5/8″ casing hanger had a 10″ pup joint made up to it This was not identified on the hanger . . .

Drilling Engineer / Stig Seland



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DNO
1969 – DNO

 		Borgland Dolphin Drilling Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 01/07/2021
Drill crew observed that Slips for perforating guns came out
to rig without handles.

Øystein Prytz / 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
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
1419 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 11/04/2021 We pressure tested the BOP in an untraditional way using a BOP jump tool. This took very long time . . .

Drilling Supervisor / Stig Seland



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DNO
1415 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 10/04/2021 Two fingers have been torn off the protective sleeve/ retainer ring on the SSTT. One finger was . . .

Sturla Jensen / Stig Seland



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DNO
1417 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 10/04/2021 Heavily bending on Lubricator Umbilical approx 1,5 m from termination head for. Caused by Clamp had . . .

Sturla Jensen / Stig Seland



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