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A new method based on the predicting of phase difference (PPM) is developed to extract phase slowness from multi-channel dispersive waves. This method is verified by synthesized multipole array waveforms and field data measured by a multipole array acoustic logging tool (MPAL). The results show that this method is fast and stable for dispersion analysis.
Formation anisotropy evaluation is very important for complex reservoir in petroleum exploration. Cross-dipole array acoustic well logging technology breaks the restriction that shear waves could not be measured in soft formations. The cross-dipole acoustic data can be used to study the formation anisotropy. This paper presents an example of cross-dipole application of multi-pole acoustic logging...
Shielding effectiveness (SE) of small enclosures within reverberation chamber is an important topic in EMC society in recent years. Since the field propagation within a reverberation chamber is randomly polarized and isotropic, it is useful to investigate the effect of polarization and incident angle of plane wave on the field distribution within a enclosure with aperture. The effects of polarization...
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