2007•Unpublished venueRequires access
Study of the Real Pole's Distribution in Borehole Acoustic Field of Fluid-fluid Model
Wei Liu
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Abstract
A fluid-fluid model is studied.When the acoustic velocity out of a borehole is lower than the acoustic velocity in the borehole,the existence range of real poles is discussed.The results indicate that: only when the wave number along the axis is smaller than the wave number in the borehole and bigger than the wave number out of the borehole,the real poles exist.