The invention relates to the technical field of PDC
drill bits, in particular to a PDC
drill bit suitable for a double-
pendulum speed-increasing drilling tool. The PDC
drill bit comprises a drill bitbody,
cutting blades, main
cutting teeth, reversed hole teeth, edge teeth, gauge teeth and
rock breaking tine teeth; the
cutting blades are circumferentially distributed at intervals around the drillbit body, the gauge teeth are distributed on the outer side faces of gauge parts of the cutting blades, the
rock breaking tine teeth are distributed on the outer side faces of the noses of the cuttingblades, and the tooth tops of the
rock breaking tine teeth are higher than those of the main cutting teeth. The PDC
drill bit suitable for the double-
pendulum speed-increasing drilling tool has the advantages that the rock breaking tine teeth are arranged to pre-break a stratum during drilling and release formation stress, thereby improving the rock breaking efficiency of the main cutting teeth and protecting the main cutting teeth to reduce abrasion; the PDC
drill bit is suitable for the double-
pendulum speed-increasing drilling tool, so that the combination of the PDC
drill bit and the double-pendulum speed-increasing drilling tool can improve the entire drilling speed, stability is kept in a vertical well section, the
wellbore quality is good, the drill bit is not stuck easily, the inhibition effect of the drilling tool on drill bit eddy can be also improved, and the purpose of assisting in speed increasing is achieved.