Patent ID: 7866418

Claim:
A rotary drill bit, comprising: a bit body including a leading end structure configured to facilitate drilling a subterranean formation; and a plurality cutting elements mounted to the bit body, at least one of the cutting elements including a polycrystalline diamond table bonded to a substrate, at least a portion of the polycrystalline diamond table including: a plurality of diamond grains defining a plurality of interstitial regions; a metal-solvent catalyst occupying at least a portion of the plurality of interstitial regions, the metal-solvent catalyst present in an amount of about 1 weight % to about 6 weight %; wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oersteds (“Oe”) or more; wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a specific magnetic saturation of about 15 Gauss·cm 3 /grams (“G·cm 3 /g”) or less; and wherein the plurality of diamond grains and the metal-solvent catalyst of the at least a portion of the polycrystalline diamond table collectively exhibit a specific permeability of about 0.060 G·cm 3 /g·Oe to about 0.090 G·cm 3 /g·Oe.