WE Report

Lessons Learned

Lessons Learned865


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

PGNiG
7698 – PGNiG

Deepsea Yantai HSEQ
PSA Q&A
Planning 6501/10-1
Tomcat
Other 06/12/2024

Question 1. Brønn 6305/10-1 «Tomcat» er definert som en exploration well. Vi ber om bekreftelse på . . .

Åse Kristin Pettersen / Stig Seland



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PGNiG
6223 – PGNiG

Deepsea Yantai HSEQ
Own Experience
Planning 6501/10-1
Tomcat
Other 08/05/2024
An evaluation of some changes was not documented.
A MOC process should cover any RELEVANT changes . . .

Åse Kristin Pettersen / Stig Seland


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PGNiG
6874 – PGNiG

No Rig Other
Own Experience
Planning 6501/10-1
Tomcat
N/A 06/11/2023 It is strong currents at the location, and it was very hard to keep the ROV stable when surveying . . .

Anniken Meisler / Anniken Meisler



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PGNiG
5838 – PGNiG

Deepsea Yantai External Environment Planning 6501/10-1
Tomcat
Environmental Seabed inspection 19/06/2023 During preparation of SoW, Marine department needed input from Engineering Company (InterMoor) to . . .

Stian Engvik / Morten Laget



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PGNiG
5834 – PGNiG

Deepsea Yantai Drilling
Own Experience
Planning 6305/10-1
Tomcat
N/A 15/06/2023
BO&K Analysis performed in Aug 2022, with a sensitivity on revised reservoir data.

The . . .

Richard Mollison / Morten Laget



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PGNiG
4923 – PGNiG

Deepsea Yantai Logistics
Own Experience
Planning 6608/1-1 S
Copernicus
Other 03/10/2022 With this focus the mobilization plan became a live document and with a weekly focus, ensuring all . . .

Johan Kjos-Hanssen / Morten Laget



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PGNiG
4948 – PGNiG

Deepsea Yantai External Environment
NEA Q&A
Planning 6608/1-1 S
Copernicus
Other 28/09/2022

Det kan forventes sporadisk fiskeriaktivitet med fartøy som fisker med konvensjonelt redskap etter . . .

Sanne Risbakk



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PGNiG
4834 – PGNiG

Deepsea Yantai Drilling
Own Experience
Planning 6608/1-1 S
Copernicus
Other 04/09/2022 When running of 20″ x 13 3/8″ casing was planned to be on Sunday 4/9/22 we tried to get surge . . .

Drilling Engineer / Morten Laget


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PGNiG
4947 – PGNiG

Deepsea Yantai HSEQ
Own Experience
Planning 6608/1-1 S
Copernicus
26/08/2022

/ Åse Kristin Pettersen



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PGNiG
4817 – PGNiG

Deepsea Yantai HSEQ
NEA Q&A
Planning 6608/1-1 25/08/2022

Hearing comment from the Norwegian Directorate of Fisheries
Fiskeridirektoratets oppgave ved slike . . .

Sanne Risbakk / Christina Sæland Rødne



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PGNiG
4819 – PGNiG

Deepsea Yantai Drilling
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

Overburden Lithologi/Subsurface-prospektet 6608/1-1 S Copernicus i PL1017

Sanne Risbakk / Morten Laget



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PGNiG
4820 – PGNiG

Deepsea Yantai Drilling
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

Well design and drilling operation with focus on risk assessments for each hole section,
including . . .

Sanne Risbakk / Morten Laget



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PGNiG
4821 – PGNiG

Deepsea Yantai Drilling
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

Results from Blowout & kill study and input parameters from subsurface, including chosen
relief . . .

Sanne Risbakk / Morten Laget



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PGNiG
4822 – PGNiG

Deepsea Yantai HSEQ
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

The question of how PGNiG relates to the fact that the estimated annual
probability of loss of MSF . . .

Sanne Risbakk / Åse Kristin Pettersen



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PGNiG
4823 – PGNiG

Deepsea Yantai Marine
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

The question of how the operator (PGNiG) ensures that the site-specific
criteria set for . . .

Sanne Risbakk / Morten Laget



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PGNiG
4824 – PGNiG

Deepsea Yantai Marine
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

How are the weather conditions monitored ?​

Sanne Risbakk / Morten Laget



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PGNiG
4825 – PGNiG

Deepsea Yantai Marine
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

It is sometimes run with reduced power from auxiliary engines for operation of the DP to save fuel. . . .

Sanne Risbakk / Morten Laget



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PGNiG
4826 – PGNiG

Deepsea Yantai Marine
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

Is there a permanent or site-specific approval from DNV with regard to waves in deck for survival . . .

Sanne Risbakk / Morten Laget



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PGNiG
4827 – PGNiG

Deepsea Yantai Marine
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

At which combinations of significant wave height and period should one, according to the operation . . .

Sanne Risbakk / Morten Laget



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PGNiG
4828 – PGNiG

Deepsea Yantai Marine
PSA Q&A
Planning 6608/1-1 Other 25/08/2022

How is the wave height measured at the location?​

Sanne Risbakk / Morten Laget



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