An [[acoustic]] [[well log]] used in the location of [[fracture|fractures]]. Usually the log consists of one or more [[curve|curves]] in which the amplitudes of the [[compression wave| compression]] and/or [[shear wave]] forms are shown across a [[formation]] segment. Fractures may produce attenuation of both compressional and shear waves, if the fractures are properly oriented. Fracture Finder is a Welex trademark.