US Patent 7316281 Two-cone drill bit with enhanced stability

Patent 7316281 was granted and assigned to Smith International on January, 2008 by the United States Patent and Trademark Office.

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Patent Inventor Names

Mohammed Boudrare0

Prabhakaran K. Centala0

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Patent abstract

A two-cone drill bit that exhibits improved stability. In one embodiment, the two-cone drill bit has a first and a second roller cone arranged to have a cone separation angle between about 145 degrees and about 166 degrees. In some embodiments, the two-cone drill bit has a plurality of cutting elements arranged on the roller cones such that a bottom hole coverage greater than about 17 percent is achieved per revolution of the two-cone drill bit.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=07316281

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