WE Report

Lessons Learned

Lessons Learned865


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

DNO
1421 – DNO

Borgland Dolphin Rig Intake
Own Experience
INTERNAL
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
Other 15/04/2021 When performing a joint rig intake for several operators (DNO, IOG and Wellesley) it is very time . . .

Ã…se Kristin Pettersen / Morten Laget


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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
1416 – DNO

Borgland Dolphin Drilling
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 10/04/2021 Had only 1 Dolphin sub sea engineer. He had to work overtime, and OIM had to make deviation. . . .

Drilling Supervisor / 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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DNO
1418 – DNO

Borgland Dolphin Subsea
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 10/04/2021
Disconnected BOP.
Inspected top of TH and crown plug.

Sturla Jensen / Stig Seland



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DNO
1413 – DNO

Borgland Dolphin Drilling
Own Experience
INTERNAL
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
N/A 08/04/2021 Difficult to find the relevant risks in a very comprehensive risk register

Anniken Meisler / Anniken Meisler


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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
1398 – DNO

Borgland Dolphin External Environment Planning A-1 H, A-2 H, A-3 HT2
Oselvar
06/04/2021 The OSCP should be sent to rig and PSVs 2 days prior to arrival on location, not before setting BOP . . .

Christina Sæland Rødne / Anniken Meisler


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DNO
1399 – DNO

Borgland Dolphin Drilling
Own Experience
INTERNAL
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
06/04/2021 Mail sent to IDS 15.03.21 (Monday) with set up requirements including feedback from DNO. No progress . . .

Øystein Prytz / Stig Seland



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DNO
1400 – DNO

Borgland Dolphin Subsea
Own Experience
INTERNAL
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 06/04/2021 Unable to install flushing cap and URF offline, operations had to be done on rig time. Not able to . . .

Øystein Prytz / Stig Seland



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DNO
1396 – DNO

Borgland Dolphin Well test
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 05/04/2021 We discussed the option 1) of hanging the entire landings string with Wellsafe Explorer weak links, . . .

Drilling Supervisor / Stig Seland



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DNO
1397 – DNO

Borgland Dolphin Drilling Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 05/04/2021 The DOPs was in the best intention written very detailed, with exact description of many small . . .

Drilling Supervisor / Stig Seland



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DNO
1395 – DNO

Borgland Dolphin Drilling
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 04/04/2021 Landing string got stuck after pulling 7 m. Possible stuck with SSTT at marine riser flex joint, OR . . .

Drilling Supervisor / Stig Seland



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DNO
1394 – DNO

Borgland Dolphin Logistics
Own Experience
INTERNAL
Operational A-3 HT2
Oselvar
Subsea work 03/04/2021 The POB got maxed out and there were no Covid-19 emergency cabins available at the time. Also, a . . .

Drilling Engineer / Stig Seland



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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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DNO
1376 – DNO

Borgland Dolphin Drilling
Own Experience
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
P&A 27/03/2021 A lot of changes in start of the operation. Change of document name, change of specific lines, . . .

Drilling Engineer / Stig Seland



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DNO
1374 – DNO

Borgland Dolphin Drilling
Own Experience
INTERNAL
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
Other 19/03/2021
Extremely time-consuming compared to what we get in return. Render design (or just Pia . . .

Steinar Aarnes / Morten Laget


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DNO
1361 – DNO

Borgland Dolphin Marine
Own Experience
Operational A-1 H, A-2 H, A-3 HT2
Oselvar
Prelay 08/03/2021 By using 41deg fluke angles the anchors would not hold the required test tension

Stian Engvik / Morten Laget


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DNO
1345 – DNO

Borgland Dolphin HSEQ
PSA Q&A
Planning A-1 H, A-2 H, A-3 HT2
Oselvar
N/A 11/02/2021

Vernetjenesten i Dolphin Drilling har en kommentar i deres uttalelse til samtykket. Vi ber om . . .

Karina Helle / Morten Laget


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