| 摘要 |
A drill bit that includes a boss extending rotationally forward of at least one blade thereof in a gage region of a bit body for increasing stability and reducing impact shock caused by a lateral imbalance force acting on the bit while drilling a subterranean formation is disclosed. The boss includes a circumferential bearing surface that rotationally precedes a circumferential bearing surface of the at least one blade. A drill bit that includes a boss having a nozzle port extending therein is also disclosed.
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