During drilling operations drill hole oversized what is the reason of oversize?

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Drill hole oversized during drilling operations due to various reasons such as poor drilling fluid properties, incorrect bit selection, or mechanical issues.

Poor drilling fluid properties can cause inadequate hole cleaning and lead to oversized holes.
Incorrect bit selection, such as using a dull or worn-out bit, can result in poor hole stability and enlargement.
Mechanical issues like vibrations or inadequate weight on bit can also contribute to drill hole oversized.
Oversized holes can also occur due to formation characteristics, such as soft or unstable formations.
Proper monitoring and adjustment of drilling parameters can help prevent drill hole oversized.

During drilling operations drill hole oversized what is the reason of oversize?

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