By: Drilling Engineer
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Report No.
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5131 |
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Discipline/Origin
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Drilling |
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Well
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No well selected |
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Date created
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2023/04/10 |
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Project Phase
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Operational |
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LL Type/Classification
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Casing |
Negative Casing LL with Wellesley
– Surface section
What happened:
Difficulties passing 20″ CSG shoe through FMS. Engaged CRTi and pushed through.
What was planned:
Run 20″ csg with FMS.
What was learned:
Wrong placement of stop collar on 20″ CSG. Stop ring should be placed in the middle of the centralizer. With the stop collar in the middle, the centralizer will get slimmer when hitting an obsticle. With stop ring over and under, the centralizer could get wrapt/widen and cause problems down hole.
What actions are required:
Place stop rings in the middle of centralizers.
Run 20″ csg with FMS.
Wrong placement of stop collar on 20″ CSG. Stop ring should be placed in the middle of the centralizer. With the stop collar in the middle, the centralizer will get slimmer when hitting an obsticle. With stop ring over and under, the centralizer could get wrapt/widen and cause problems down hole.
Place stop rings in the middle of centralizers.
EDITOR
CLOSE LL (testing)
Deepsea Yantai
Balcom
![](\"\/storage\/icons\/noun_rig_2570764.svg\")
Deepsea Yantai<\/a><\/li>\n\t\t\t\t\t\t\t\t
![](\"\/storage\/icons\/noun_oil_well_2946698.svg\")
Balcom<\/a><\/li>\n\t\t\t\t\t\t\t\t
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