WE Report

Lessons Learned

Lessons Learned865

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

DNO
2174 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 01/10/2021 Extraction stopped as the hub was secured with wire bracing. These had to be cut before operation . . .

Lars Solvang / Stig Seland



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DNO
2188 – 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
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
2190 – 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
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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INEOS
3403 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Operational PL937
Fat Canyon		 Top hole 01/10/2021 Pilot Hole BHA was missed when boat went out from KSU. This was detected by DE offshore when he . . .


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INEOS
2164 – INEOS

 		Borgland Dolphin Logistics
Own Experience		 Operational PL937
Fat Canyon		 Top hole 25/09/2021 Equipment was not loaded onto rig when rig was moored at Gomez well location. Offloading supply . . .

Drilling Supervisor / Morten Laget


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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
2305 – DNO

 		Borgland Dolphin Logistics
Own Experience		 Operational 2/5-15
Gomez		 P&A 15/09/2021 Missing Protectors for 13-3/8″ Casing

Johan Kjos-Hanssen / 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
2110 – DNO

 		Borgland Dolphin Subsurface
Own Experience		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 Production section 08/09/2021 The results from the pressure test caused some initial confusion regarding if the test was . . .

Øystein Prytz / Stig Seland


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DNO
2109 – DNO

 		Borgland Dolphin Project Management
Own Experience		 Other A-1 H, A-2 H, A-3 HT2
Oselvar		 Other 07/09/2021 Lead drilling engineer did not have admin rights on Oselvar Sharepoint.

Øystein Prytz / Stig Seland



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DNO
2106 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Surface section 31/08/2021
Drilled 12 ¼” hole with Smith XZ616 AxeBlade PDC bit from 1613 m to 2895 m in a vertical hole. . . .

Drilling Supervisor / Morten Laget


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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
2098 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Surface section 27/08/2021 Unable to set seal assembly after 13 3/8″ hanger was landed. Attempted several times to pressure up . . .

Drilling Supervisor / Morten Laget


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DNO
2096 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Surface section 22/08/2021 DrilQuip MPT and BOP test tool was sent out without pup joints.

Drilling Supervisor / Morten Laget


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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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