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DETERMINING SHEAR SLOWNESS FROM DIPOLE SOURCE-BASED MEASUREMENTS AQUIRED BY A LOGGING WHILE DRILLING ACOUSTIC MEASUREMENT TOOL
DETERMINING SHEAR SLOWNESS FROM DIPOLE SOURCE-BASED MEASUREMENTS AQUIRED BY A LOGGING WHILE DRILLING ACOUSTIC MEASUREMENT TOOL
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机译:从钻探声学测量工具中的测井获得的基于偶极源的测量中确定剪切慢度
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摘要
A technique includes receiving data representing time domain waveforms acquired by receivers of a drilling string-disposed acoustic measurement tool in response to energy emitted by at least one dipole source of the tool. The technique includes processing the data to determine slowness values associated with a plurality of acoustic modes, including a formation flexural acoustic mode and a tool flexural acoustic mode. The technique includes identifying slowness-frequency pairs from the slowness values and determining a shear slowness based at least in part on the identified slowness-frequency pairs.
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