| Operator | Rig | Discipline / Origin | Project Phase | Well | Section | Date | What Happened | |
|---|---|---|---|---|---|---|---|---|
|
8483 – DNO  |
Deepsea Yantai | HSEQ | Operational | 35/10-13 Kjøttkake |
P&A | 24/03/2025 |
When cementer was dropping/pushing CST into DP filled with OBM “splashed” out of pipe and spilled on . . .
Sander Schaathun / Stig Seland |
|
|
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 |
|
|
8380 – DNO |
Deepsea Yantai | Drilling | Operational | 35/10-13 Kjøttkake |
P&A | 04/03/2025 |
Indication of cut was not recognized. Decided to POOH and run in with B/U cutting eq. with marine . . .
Sander Schaathun / Stig Seland |
|
|
8381 – DNO |
Deepsea Yantai | Drilling | Operational | 35/10-13 Kjøttkake |
P&A | 04/03/2025 |
When cutting the 9 5/8” casing with low flow / pressure, the parameters spiked / fluctiated. When . . .
Sander Schaathun / Stig Seland |
|
|
8382 – DNO |
Deepsea Yantai | Drilling | Operational | 35/10-13 Kjøttkake |
P&A | 04/03/2025 | Lost rubber drill pipe wiper downhole. After pulled out with the cement stinger and when changing . . . Sander Schaathun / Stig Seland |
|
|
8383 – DNO |
Deepsea Yantai | Drilling | Operational | 35/10-13 Kjøttkake |
P&A | 04/03/2025 |
The swedge that arrived the rig had a XO. When setting a Kelly cock on the swedge the total length . . .
Sander Schaathun / Stig Seland |
|
|
8288 – PGNiG  |
Deepsea Yantai | Drilling | Operational | 6501/10-1 Tomcat |
P&A | 15/02/2025 |
Could not find BHAs in drilling program
Drilling Engineer |
|
|
8289 – PGNiG |
Deepsea Yantai | Drilling | Operational | 6501/10-1 Tomcat |
P&A | 15/02/2025 |
Cutting job planned with long knives to ensure ability to cut through casing joints in case of . . .
Drilling Engineer |
|
|
8290 – PGNiG |
Deepsea Yantai | Drilling | Operational | 6501/10-1 Tomcat |
P&A | 15/02/2025 |
Primary cutter was tempest backup cutter was conventional with marine swivel. Lack of annular swivel . . .
Drilling Engineer |
|
|
6978 – DNO |
Nobel Invincible | Drilling | Operational | 2/6-7 S Falstaff |
P&A | 21/11/2024 |
Sat the EZSV and tagged with 6t and and overpull of 27t. Performed two pressure tests, but both . . .
Drilling Engineer |
|
|
6967 – DNO |
Nobel Invincible | Drilling | Operational | 2/6-7 S Falstaff |
P&A | 11/11/2024 |
For plug #1D incorrect concentration of retarder was used in the cement mix – extending the . . .
Lene Lomeland |
|
|
6968 – DNO |
Nobel Invincible | Drilling | Operational | 2/6-7 S Falstaff |
P&A | 11/11/2024 |
Due to incorrect concentration of retarder in #1D it was uncertainty of the density of the cement . . .
Lene Lomeland |
|
|
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 |
|
|
6455 – Wellesley  |
COSLPromoter | Drilling Own Experience |
Operational | 35/10-12 S Gnomoria |
P&A | 05/07/2024 |
Observed flowback of the mud lost while running and cementing 9 5/8″ casing. Of ±200 m3 of mud lost, . . .
Drilling Engineer / Morten Laget |
|
|
6456 – Wellesley |
COSLPromoter | Drilling Own Experience |
Operational | 35/10-12 S Gnomoria |
P&A | 05/07/2024 |
Discussion about the risk of accidentally pulling the seal assembly free (no outer lock ring . . .
Drilling Engineer / Morten Laget |
|
|
5909 – DNO |
Deepsea Yantai | Drilling | Operational | 25/7-11 S Norma |
P&A | 05/09/2023 |
Due to high percentage of gas in the mud return the interface had to go over the shaker system and . . .
Drilling Engineer / Morten Laget |
|
|
5907 – DNO |
Deepsea Yantai | Drilling | Operational | 25/7-11 S Norma |
P&A | 03/09/2023 |
It was not clearly stated in the HLB cement program how the cement calculations should be carried . . .
Drilling Engineer / Morten Laget |
|
|
5845 – Wellesley |
Deepsea Yantai | Drilling Own Experience |
Operational | 35/10-10S Carmen |
P&A | 12/07/2023 |
Pulled casing hanger with upper annular closed and C&K lines closed.
Drilling Engineer / Morten Laget |
|
|
4913 – PGNiG |
Deepsea Yantai | Drilling | Operational | 6608/1-1 S Copernicus |
P&A | 23/09/2022 |
When pulling the conductor there was no cement stuck to it due to use of protane wrapping on the . . .
Drilling Engineer / Morten Laget |
|
|
4910 – PGNiG |
Deepsea Yantai | Drilling | Operational | 6608/1-1 S Copernicus |
P&A | 19/09/2022 |
After setting 8 1/2″ OH P&A Cement Plug the plan was to circulate clean at 100 m over TOC and . . .
Drilling Engineer / Morten Laget |
New Lesson Learned
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- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- RIG
Borgland Dolphin- Island Innovator
- Well
Oselvar- Gomez
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- RIG
- Island Innovator
- Well
- Gråspett
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- RIG
- Deepsea Bergen
- WELL
- Brasse
- Rungne
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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NO LLs for INEOS- RIG
- Borgland Dolphin
- WELL
- Fat Canyon
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- RIG
- Deepsea Yantai
- Well
- Shrek
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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