Numerical studies on rock breaking of single axe-shaped PDC cutter

Abstract For a drill bit, the cutter is most important part to break rock. In oilwell drilling, polycrystalline diamond compact (PDC) bit widely used shear rock formation. this paper, finite element model with including axe-shaped PDC and formation developed study breaking behaviours. Results show that effect of on better than planar cutter. The front rake angle face angel play significant role axial force but have little influence tangential force. addition, both increase rapidly increasing depth cut.