Influence of Speed on the Response of Diamond Drill Bits to Rock Breaking Process
Ultra high speed drilling technology breaks the boundaries of the existing critical specification parameters.Through the drilling method of high speed,low WOB and low torque,it can achieve efficient rock breaking,and provide a practical solution to the problem that it is difficult to drill efficiently in deep hard rock formation.According to the existing response mechanism of rock breaking process of diamond bit,the high-efficiency drilling response of ultra-high speed drilling technology in this formation is analyzed,and the influence of various parameters on the drilling process of diamond bit is determined.According to the results of rock breaking response of diamond bit,the relationship between the speed of diamond bit and rock breaking mechanism in the field of rock failure is constructed.The results show that the reason why ultra-high speed drilling technology improves rock breaking efficiency is related to the transformation of rock breaking mechanism,and the critical speed may be the key factor leading to the transformation of rock breaking mechanism.
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