WE Report

Lessons Learned

Lessons Learned865


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

DNO
8481 – DNO

Deepsea Yantai Drilling Planning 35/10-13
Kjøttkake
Reservoir section 24/03/2025
Reached TD without signifigent problems. Sampled acc. To plan.
Some pressure point samples . . .

Sander Schaathun / Stig Seland


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DNO
8484 – DNO

Deepsea Yantai Drilling Planning 35/10-13
Kjøttkake
P&A 24/03/2025 3 ½” DP was racked back in due time, but handling such small tubular takes time.

Sander Schaathun / Stig Seland


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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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Wellesley Petroleum
7699 – Wellesley Petroleum

Deepsea Yantai HSEQ
PSA Q&A
Planning No well N/A 06/12/2024

Sp. Mål. 1. Kap 9.3 tredje avsnitt om trafikkovervåkning står det følgende «If any irregularities . . .

Åse Kristin Pettersen / Morten Laget



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DNO
6969 – DNO

Nobel Invincible Drilling Planning 2/6-7 S
Falstaff
P&A 11/11/2024 Attempted to dress off cement after the sample in the UCA cell started to build compressive . . .

Lene Lomeland


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DNO
6878 – DNO

Nobel Invincible HSEQ
NEA Q&A
Planning 2/6-7 S
Falstaff
Other 11/10/2024

Spørsmål angående søknad om tidsaavik på responstid:
1. Mulighet for å minske responstid for . . .

Helene Folkvord / Anniken Meisler



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DNO
6877 – DNO

Nobel Invincible External Environment
Own Experience
Planning 2/6-7 S
Falstaff
Other 10/10/2024 The PSV’s have crew change every 4 weeks meaning that at some point we are not able to meet this . . .

Helene Folkvord / Anniken Meisler



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DNO
6767 – DNO

Nobel Invincible Logistics Planning 2/6-7 S
Falstaff
Top hole 23/09/2024 Excellent planning. Safely executed. Experienced and knowledgeable Expro crews who cooperated good . . .

Lene Lomeland


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Wellesley
6391 – Wellesley

COSLPromoter Drilling
Own Experience
Planning 35/10-12AS
Gnomoria
Surface section 12/06/2024 Not possible to M/U the no-cross joint, because it was not possible to grip with the casing tong on . . .

Giacomo Bonomo / Morten Laget



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Wellesley Petroleum
6255 – Wellesley Petroleum

COSLPromoter HSEQ
Own Experience
Planning 35/11-29 S
Toppand East
Other 30/05/2024 During the operation (22.05.24) an observation card was written that there was not a proper . . .

Åse Kristin Pettersen / Åse Kristin Pettersen



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Wellesley Petroleum
6258 – Wellesley Petroleum

COSLPromoter, COSL Promoter Drilling Planning 35/11-5, 39/11-29S
Toppand East
Top hole 30/05/2024
– 9 1/2″ DC need high M/U torque and might need to use rig tongs.
– 9 1/2″ DC needs lifting subs . . .

Drilling Engineer / Morten Laget


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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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DNO
6876 – DNO

Nobel Invincible HSEQ
NEA Q&A
Planning 2/6-7 S
Falstaff
N/A 02/05/2024

Fiskeridirektoratet fraråder at det blir gitt tillatelse til prøveboring. Som begrunnelse vises det . . .

Anniken Meisler / Anniken Meisler



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DNO
6875 – DNO

Nobel Invincible HSEQ
NEA Q&A
Planning 2/6-7 S
Falstaff
N/A 09/04/2024

Planlagt hamring for lederør med lydutsending som starter på et lavt nivå og øker gradvis til . . .

Anniken Meisler / Anniken Meisler



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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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DNO
5871 – DNO

Deepsea Yantai Planning 25/7-11 S
Norma
01/08/2023 Difficult to see with the ROV at seabed due to poor visibility and loose seabed conduction.

Drilling Engineer / Morten Laget


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DNO
5860 – DNO

Deepsea Yantai Drilling
Own Experience
Planning 25/7-11 S
Norma
Top hole 30/07/2023 One of the stop collars fell of when it was picked up from the boat. When laying down the . . .

Drilling Engineer / Morten Laget


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DNO
5866 – DNO

Deepsea Yantai Drilling
Own Experience
Planning 25/7-11 S
Norma
Surface section 30/07/2023 Difficulties with logistics to separate the joints below 11.5 m and the joints longer due to limited . . .

Drilling Engineer / Morten Laget


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Wellesley
5840 – Wellesley

Deepsea Yantai Drilling Planning 35/10-10S
Carmen
Intermediate section 20/06/2023 It was run according to tally.

Drilling Engineer / Morten Laget


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Wellesley
5841 – Wellesley

Deepsea Yantai Drilling Planning 35/10-10S
Carmen
Intermediate section 20/06/2023 The CHSART was run with the pup sent out with the tool.

Drilling Engineer / Morten Laget


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