WE Report

Lessons Learned

Lessons Learned865


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

DNO
1386 – DNO

Borgland Dolphin Logistics
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
Subsea 29/03/2021
During operations things got delayed and went missing in the transport route (Aker fuses for . . .

Drilling Engineer / Stig Seland



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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
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
243 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Intermediate section 16/06/2020 The remote operated lo-torq valve was installed with an elbow between side inlet and lo-torq, while . . .


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Wellesley
253 – Wellesley

Transocean Arctic Drilling Operational 35/4-2
Songesand
Surface section 16/06/2020 The back-up 18 3/4″ wellhead assembly was sent out incomplete, without running tool, 9 m DP mandrel, . . .


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Wellesley
254 – Wellesley

Transocean Arctic Drilling Operational 35/4-2
Songesand
Surface section 16/06/2020 Used 2 x pup joints due to aim of +-2 m rathole. The 2 m pup was difficult to make up due to the . . .


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Wellesley
255 – Wellesley

Transocean Arctic Drilling Operational 35/4-2
Songesand
Top hole 16/06/2020 The handling pup was 3 m which was not long enough to get the WH below rotary and get the tuggers up . . .


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Wellesley
260 – Wellesley

Transocean Arctic Drilling Operational 35/4-2
Songesand
Reservoir section 16/06/2020 Noticed several times that “slugs” of cuttings would reach the shakers for no good reason.


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Wellesley
264 – Wellesley

Transocean Arctic Drilling Operational 35/4-2
Songesand
N/A 16/06/2020 Have been lucky all campaign not to have had any problems with the Halliburton OBM cuttings blower.


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Wellesley
265 – Wellesley

Transocean Arctic Drilling Operational 25/1-13
Balcom
P&A 16/06/2020 Unable to run Weatherford 9 5/8″ casing cuting assembly past wellhead. Found out that spiral . . .


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PGNiG
344 – PGNiG

Deepsea Nordkapp Drilling
INTERNAL
Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019 WDP did not enhance the Shrek drilling operations in any significant capacity


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PGNiG
345 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019 IKM MRR 300 system (modified in lack of 500 system), failed to deliver adequate flow (3500lpm), . . .


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PGNiG
346 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019 IKM MRR: missing hoses between LARS and 90 degrees flowbend topside. Backloaded by Mi Swaco.


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PGNiG
347 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019 Exhaust from IKM generator causing fumes and issues being in cement office


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PGNiG
349 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019 Elevator bushing for 13 3/8″ casing was missing on rig (backup to CRTi tool). This message was . . .


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PGNiG
350 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019
Unable to make up Dril-Quip 13 3/8” no cross coupling (VAM 21) to WH assembly (VAM 21).
Had to . . .


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PGNiG
351 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Surface section 22/10/2019
Silo #4 achieved desired pump rate (800 lpm) by opening the valves 7 %.
Silo #2 achieved same only . . .


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PGNiG
359 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 Insite (Halliburton) could not handle NOV data, resulting in an overload and some NPT.


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PGNiG
382 – PGNiG

Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek
Production section 22/10/2019 12-/4” drilling – parameters went well.


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Faroe
282 – Faroe

Transocean Arctic Drilling Operational 30/6-30
Rungne
P&A 01/10/2019 Thread on tension mandrel was damaged in town (used for connecting Weatherford MOST tool to rotary . . .


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