Turbine driven reaming bit with blades and cutting structure extending into concave nose
作者： Thorsten Schwefe , Silvino M. Ersan , Maurilio V. Solano , Anthony Phillips , Rudolf C. Pessier
DOI:
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摘要: A reaming bit designed to operate with low torque fluctuation when driven a turbine at speeds in the order of 300-600 RPM and above features profile that is arcuate from gauge dimension nose area or alternatively has blunt straight taper section but ratio length (PL) size (BS) under 0.75. The blades extend into concave cone cutting structure continues along towards center. have step near increase exposure blade structure. An array protrusions are disposed parallel behind high speed stability adjacent transition protect outer casing on run in.
google.ca 参考文章(12)
Thorsten Schwefe, Silvino M. Ersan, Maurilio V. Solano, Anthony Phillips, Rudolf C. Pessier, Turbine driven reaming bit with profile limiting torque fluctuation ,(2012)
Thorsten Schwefe, Silvino M. Ersan, Maurilio V. Solano, Anthony Phillips, Rudolf C. Pessier, Turbine Driven Reaming Bit with Stability and Cutting Efficiency Features ,(2012)
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