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Questions and Answers
What material are rigid centralizers commonly manufactured from?
What material are rigid centralizers commonly manufactured from?
- Machined composites
- Aluminium or iron (correct)
- Moulded plastics and phenolic resins
- Spring steel bows
What happens to the bows of semi-rigid centralizers when they encounter a loading situation beyond their capability?
What happens to the bows of semi-rigid centralizers when they encounter a loading situation beyond their capability?
- They become rigid like regular centralizers
- They collapse without destroying the centralizer integrity (correct)
- They expand to adjust to the loading situation
- They detach from the centralizer
What is the purpose of the helical pattern in spiral-bow centralizers?
What is the purpose of the helical pattern in spiral-bow centralizers?
- To align the bows with the long axis of the casing
- To aid in mud removal (correct)
- To increase the OD of the centralizer
- To increase the flexibility of the bows
Which type of centralizers are constructed using spring steel bows?
Which type of centralizers are constructed using spring steel bows?
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What is a characteristic feature of centralizers with fins or turbolizers?
What is a characteristic feature of centralizers with fins or turbolizers?
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How do semi-rigid centralizers differ from rigid centralizers?
How do semi-rigid centralizers differ from rigid centralizers?
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What happens if a rigid centralizer passes through a swollen shale section?
What happens if a rigid centralizer passes through a swollen shale section?
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Why are spring-bow centralizers commonly used?
Why are spring-bow centralizers commonly used?
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