Common causes and preventive measures of abnormal wear/fracture of down the hole drill bits
Typical phenomena: tooth blade cracking, drill body cracking, or thread damage.
Cause analysis:
Rock formation mutation: The development of fissures in the rock formation can easily lead to deviation and impact, requiring the use of guiding devices.
Operational error: Failure to clean the rock debris at the bottom of the hole in a timely manner resulted in repeated breakage, or the depth of the hole exceeded the bearing capacity of the drill pipe, causing fatigue fracture.
Insufficient cooling: Insufficient air supply from the air compressor leads to poor heat dissipation and exacerbates thermal fatigue.
Solution: Install rock layer monitoring sensors and implement automatic parameter adjustment; Regularly check for torque fluctuations in the drill bit.
