WE Report

Lessons Learned

Lessons Learned865


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

Wellesley
1365 – Wellesley

Borgland Dolphin Marine
Own Experience
Operational 6204/11-3
Schweinsteiger
Rig move 09/03/2021 Two(2) harbour tugs were contracted by Dolphin Drilling to assist in holding Borgland Dolphin . . .

Stian Engvik / Morten Laget



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Wellesley
552 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
P&A 21/09/2020
Ran through BOP while jetting from top of BOP and landed out on top of wear bushing without hanging . . .

Drilling Supervisor


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Wellesley
553 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
P&A 21/09/2020
Re-dressed DQ MPT tool after retrieving 9 5/8″ wear bushing. RIH and jetted through BOP at high rate . . .

Drilling Supervisor


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Wellesley
554 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 21/09/2020
Not able to load barite due to long transfer lines when loading on starboard side.
Bentonite ended . . .

Drilling Supervisor


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Wellesley
555 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 21/09/2020 Took onboard 90 m3 ready mixed kill mud in Stolsfjorden

Drilling Supervisor


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Wellesley
556 – Wellesley

Borgland Dolphin Logistics Operational 6204/11-3
Schweinsteiger
Rig move 21/09/2020 19 persons booked transport by bus to Fedafjorden. Positive feedback from service companies and . . .

Johan Kjos-Hanssen


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Wellesley
519 – Wellesley

Borgland Dolphin Drilling Planning 6204/11-3
Schweinsteiger
P&A 17/09/2020 Evaluated if joining the Rig Chase Campaign would be beneficial compared to the original plan using . . .

Elisabeth Vik


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Wellesley
1063 – Wellesley

Borgland Dolphin Logistics Operational 6204/11-3
Schweinsteiger
Top hole 15/09/2020 Rig Required extra Barite at short notice due to challenges in top hole. PSV delivered Approximately . . .

Johan Kjos-Hanssen


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Wellesley
498 – Wellesley

Borgland Dolphin 6204/11-3
Schweinsteiger
09/09/2020 Increased MW to 1.20 SG on bottom of 12 1/4″ section

Drilling Supervisor


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Wellesley
483 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Surface section 05/09/2020 Ran MPT tool dressed to pull extended wear bushing. Successfully engaged and sheared out but hung up . . .

Drilling Supervisor


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Wellesley
481 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 03/09/2020
Made up shoe track to maximum torque. On attempting to change torque values in JAM system to optimum . . .

Drilling Supervisor


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Wellesley
476 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 02/09/2020 Due to shallow gas zone at 331m, needed to fill casing with mud to be ready in case of need to wash . . .

Drilling Supervisor


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Wellesley
473 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 01/09/2020 To be able to use it for BHA-handling, a hole was made in the protector.

Drilling Engineer


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Wellesley
474 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 01/09/2020
Hit shallow gas at 331m, only 24m below 36″ conductor shoe. Killed with 1.50 SG kill mud. Drilled . . .

Drilling Supervisor


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Wellesley
475 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 01/09/2020
Hit shallow gas at 331m, only 24m below 36″ conductor shoe. Killed with 1.50 SG kill mud. Drilled . . .

Drilling Supervisor


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Wellesley
466 – Wellesley

Borgland Dolphin Marine Operational 6204/11-3
Schweinsteiger
Rig move 31/08/2020 When work wire and pre-laid mooring line was retrieved after vessel had received rig PCP, . . .

Stian Engvik / Morten Laget



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Wellesley
467 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 31/08/2020 More manual handling and time spent in addition to less efficient handling when not having all BHA . . .

Drilling Engineer


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Wellesley
472 – Wellesley

Borgland Dolphin SmartBlue
INTERNAL
Setup 6204/11-3
Schweinsteiger
Connection 31/08/2020 Unable to adapt to rig-networks subnet

admin


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Wellesley
1318 – Wellesley

Borgland Dolphin Operational 6204/11-3
Schweinsteiger
30/08/2020 Skeiv lasta basket backloaded.


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Wellesley
464 – Wellesley

Borgland Dolphin Drilling Operational 6204/11-3
Schweinsteiger
Top hole 27/08/2020 No fill on 36″ hole wiper trip. Ran 30″ conductor, found 1m fill on bottom. Washed to bottom, picked . . .

Drilling Supervisor


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