By: Sander Schaathun
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Report No.
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8381 |
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Discipline/Origin
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Drilling |
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Well
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Kjøttkake |
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Date created
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2025/03/04 |
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Project Phase
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Operational |
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LL Type/Classification
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Equipment |
Deepsea Yantai
Equipment LL with DNO
Kjøttkake (35/10-13) – P&A
What happened:
When cutting the 9 5/8” casing with low flow / pressure, the parameters spiked / fluctiated. When increased flow to 1700 lpm /110 bar the parameter stabilized.
What was planned:
Cut 9 5/8″ casing with marine swivel / Tempest cutter.
What was learned:
The flowrate/pressure needs to match the rig pulsation dampers in order to get stable parameters. The knives did not reflect 53 minutes of cutting time. Once we saw stable parameters the casing was cut shortly after (approx. 5 min).
What actions are required:
Implement in future DOP. Check rig pulsation damper settings prior to job.
WFD to follow up internally.
Deepsea Yantai
What happened in P&A:
When cutting the 9 5/8” casing with low flow / pressure, the parameters spiked / fluctiated. When increased flow to 1700 lpm /110 bar the parameter stabilized.
Cut 9 5/8″ casing with marine swivel / Tempest cutter.
The flowrate/pressure needs to match the rig pulsation dampers in order to get stable parameters. The knives did not reflect 53 minutes of cutting time. Once we saw stable parameters the casing was cut shortly after (approx. 5 min).
Implement in future DOP. Check rig pulsation damper settings prior to job.
WFD to follow up internally.
EDITOR
CLOSE LL (testing)
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
-
- 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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