Wide bandwidth borehole dipole source for acoustic logging
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United States of America Patent
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May 14, 2019
Grant Date -
May 28, 2015
app pub date -
Jun 11, 2012
filing date -
Jun 11, 2012
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Abstract
A dipole source for borehole acoustic logging includes a cylindrical shell, a center beam coupled to the cylindrical shell, a movable projector inside the cylindrical shell to impact the center beam, and a cavity acoustically insulating the interior of the cylindrical shell from the exterior of the cylindrical shell. An acoustic logging tool for making measurements of a substrate surrounding a borehole with a body insertable in the borehole is also provided. The body includes an acoustic detector and a dipole source as above, along the axial length. The acoustic logging tool may include a control unit to process data collected from the acoustic detector and obtain information about the substrate surrounding the borehole.
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