Polycrystalline diamond compact (PDC) drill bits are widely employed in ultra-deep oil and gas drilling operations. However

their performance is significantly compromised by mud packing phenomena

primarily caused by rock chip adhesion during impact events. It is critical to understand the behavior and mechanisms of PDC impact adhesion. This study investigates these mechanisms using a kinetic energy-controlled impact wear tester to quantify the mechanical response during quartz particle adhesion and removal. Additionally

the mechanical behavior of PDC was analyzed through a comprehensive examination of its dynamic response and particle attachment. The results indicate that the peak impact force on PDC with and without adhered particles is 79 N and 222 N

respectively

while the energy absorption rates are 97.3% and 87.3%. After 10 cycles in a particle-laden medium

adhesion formation was observed on the PDC surface. This adhesion significantly reduces the peak impact force and increases the energy absorption rate

enhance the impact performance of the PDC drill bit and thereby reducing its cutting efficiency. Nevertheless

from the standpoint of actual drilling operations

a diminished impact force adversely affects the cutting performance of the PDC drill bit. Therefore

it is crucial to investigate the mechanical response of quartz particle adhesion and removal during the impact process

as this will provide valuable insights into the practical application of PDC drill bits in drilling operations.