Downhole measurements of mud acoustic velocity

One or more acoustic transducers are used to measure ultrasonic velocities in the mud in the interior channel of a drill collar. Corrections may be applied for temperature and/or fine grain drill cuttings to get the ultrasonic velocity in the annulus between the drill collar and the borehole wall. T...

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Bibliographic Details
Main Author GEERITS TIM W
Format Patent
LanguageEnglish
Published 06.03.2012
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:One or more acoustic transducers are used to measure ultrasonic velocities in the mud in the interior channel of a drill collar. Corrections may be applied for temperature and/or fine grain drill cuttings to get the ultrasonic velocity in the annulus between the drill collar and the borehole wall. The latter velocity may be used for caliper measurements and for correcting measurements made by formation evaluation sensors.
Bibliography:Application Number: US20080192712