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METHOD AND APPARATUS FOR COMPUTING DRILL BIT VIBRATION POWER SPECTRAL DENSITY
METHOD AND APPARATUS FOR COMPUTING DRILL BIT VIBRATION POWER SPECTRAL DENSITY
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机译:钻头振动功率谱密度的计算方法和装置
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摘要
A power spectrum density processor is located near the drill bit while drilling. The power spectral density processor computes the power spectral density of the vibrations generated by the drill bit while drilling. The power spectral density information is telemetered to the surface. A drill string transfer function is estimated using the drill bit power spectral density, derived from the vibrations of the drill string, measured substantially at the surface, to enhance drill bit seismic techniques.
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