TIME OF FLIGHT THROUGH MUD
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United States of America Patent
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May 7, 2015
app pub date -
Nov 5, 2014
filing date -
Nov 5, 2013
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Abstract
Among other things, there are disclosed embodiments of devices, suitable for incorporation into well-logging tools, for the in situ measurement of the acoustic impedance of a fluid in the well bore, such as drilling mud. The device includes a sonic emitter that emits sonic pulses into a solid probe. The pulses are partially transmitted and partially reflected at opposite surfaces, and the decay of the amplitude of successive sonic pulses is used to determine the acoustic impedance of the fluid.
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