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Ball Valves in Drilling Applications

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Questions and Answers

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?

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?

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?

Spring-bow centralizers Signup and view all the answers

What is a characteristic feature of centralizers with fins or turbolizers?

They induce turbulence and aid mud removal Signup and view all the answers

How do semi-rigid centralizers differ from rigid centralizers?

They are more flexible and can adjust to hole restrictions Signup and view all the answers

What happens if a rigid centralizer passes through a swollen shale section?

The rigid centralizer cannot pass through Signup and view all the answers

Why are spring-bow centralizers commonly used?

For their flexibility and standoff in various hole shapes and diameters Signup and view all the answers

Ball Valves in Drilling Applications

Choose a study mode

Podcast

Questions and Answers

What material are rigid centralizers commonly manufactured from?

What happens to the bows of semi-rigid centralizers when they encounter a loading situation beyond their capability?

What is the purpose of the helical pattern in spiral-bow centralizers?

Which type of centralizers are constructed using spring steel bows?

What is a characteristic feature of centralizers with fins or turbolizers?

How do semi-rigid centralizers differ from rigid centralizers?

What happens if a rigid centralizer passes through a swollen shale section?

Why are spring-bow centralizers commonly used?

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