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Crushing Of Drilling Bits

Drilling Engineering Prepared by Tan Nguyen Classification of Drilling Bits This drill bit was invented by Howard Hughes. The roller-cone bit has conical cutters or cones that have spiked teeth around them. As the drilling-string is rotated, the bit cones roll along the bottom of the hole in a circle. New teeth come in contact with the bottom of the hole, crushing, scraping, and gouging the .

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