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Keywords: contractable bit
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Proceedings Papers

Paper presented at the SPE Eastern Regional Meeting, October 11–13, 2006
Paper Number: SPE-104226-MS
... Abstract EC bit is an expandable and contractable bit a new concept of drilling the boreholes of different radii at different depths and in zone of our choice without changing the size of bit and without tripping operations. During conventional drilling boreholes of different radii at...

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