Shearing directional injection nozzle and drill bit

The invention belongs to the field of petroleum drilling and production, and particularly relates to a shearing directional jet nozzle and a drill bit, which comprise a drill bit base body, blades, cutting teeth, an inner flow channel, an upper sealing disc, a static disc, a spring, a nozzle outer cylinder, a filter screen, an upper thrust bearing, a ball bearing, a main shaft, a lower thrust bearing, a lower sealing disc, a shearing spray head, a shearing flow channel and the like. The jet flow acting area is effectively increased, the jet flow speed of the contact area of the cutting teeth and the stratum is increased, the cutting teeth are rapidly cooled, generated rock debris leaves the cutting tooth area in time and is discharged out of the well bottom, the working efficiency of the underground drill bit is effectively improved, the service life of the underground drill bit is effectively prolonged, the drilling speed is increased, and the drilling cost is reduced. 本发明属于石油钻采领域，特别涉及一种剪切定向喷射喷嘴及钻头，包括钻头基体、刀翼