2008•Exploration Engineering(Rock & Soil Drilling and Tunneling)Requires access
Technology Research on Application of Steel Ball Percussion Tools in Rotary Percussion Drilling
Chunhua Lu
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Abstract
In many medium-hard rock stratums,carbide alloy bit and steel ball percussion tools can be used together for higher ROP and better coring result with borehole deflection preventing.Relationship between impacting frequency of steel ball percussion tools and wind pressure/wind quantity was set up by mathematic statistic method,it can be applied in predicting and controlling of impacting frequency and some other technology parameters.