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Types of Cement Plugs in Well Abandonment

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Types of Cement Plugs in Well Abandonment

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Questions and Answers

What is the recommended density for the best hivis pill compared to the mud?

0.5 ppg greater

2 ppg greater

1 ppg greater (correct)

Equal density

What is the recommended yield point for the hivis pill?

< 50 lbf/100ft²

> 70 lbf/100ft² (correct)

= 60 lbf/100ft²

= 80 lbf/100ft²

Why is pipe reciprocation NOT recommended while placing a plug?

To increase rig time savings

To enhance fluid flow

To reduce waiting on cement time

To prevent swabbing of the fluids (correct)

Why is batch mixing preferred for slurry mixing?

To achieve homogeneous density Signup and view all the answers

How long is the normal waiting on cement (WOC) time recommended after placement of plugs?

12 to 24 hours Signup and view all the answers

Why should a minimum of 12 hours be used for WOC time after plug placement?

For higher compressive strength Signup and view all the answers

What does early compressive strength heavily depend on?

Thickening time Signup and view all the answers

Why is it common practice to allow for longer WOC time than necessary?

Due to unknown well temperature Signup and view all the answers

What should be done if the cement does not drill as expected after 12 hours?

Wait an additional 6 hours Signup and view all the answers

Types of Cement Plugs in Well Abandonment

Choose a study mode

Podcast

Questions and Answers

What is the recommended density for the best hivis pill compared to the mud?

What is the recommended yield point for the hivis pill?

Why is pipe reciprocation NOT recommended while placing a plug?

Why is batch mixing preferred for slurry mixing?

How long is the normal waiting on cement (WOC) time recommended after placement of plugs?

Why should a minimum of 12 hours be used for WOC time after plug placement?

What does early compressive strength heavily depend on?

Why is it common practice to allow for longer WOC time than necessary?

What should be done if the cement does not drill as expected after 12 hours?

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