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Keywords: frequency
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Proceedings Papers

Paper presented at the SPWLA 23rd Formation Evaluation Symposium of Japan, October 11–12, 2017
Paper Number: SPWLA-JFES-2017-H
... stability, characterization of reservoir behavior, anisotropy analysis, etc. One of the prevalent methodologies for stress evaluation involves cross-dipole measurements followed by dispersion analysis at sonic frequencies. The crossover of the dipole dispersion curves indicates the presence of differential...
Proceedings Papers

Paper presented at the SPWLA 19th Formation Evaluation Symposium of Japan, September 26–27, 2013
Paper Number: SPWLA-JFES-2013-Y
... wireline (relatively small) tool size covers all hole sizes. Transmitter Drive Frequency and Filtering Selection. Modern wireline and LWD sonic tools feature wide-frequency signal generation at the transmitter for the borehole mode they intend to generate: monopole, dipole or quadrupole. This signal...
Proceedings Papers

Paper presented at the SPWLA 19th Formation Evaluation Symposium of Japan, September 26–27, 2013
Paper Number: SPWLA-JFES-2013-FF
... Abstract Leaky compressional mode is a dispersive fluid mode that propagates at formation compressional slowness at low frequencies and mud slowness at high frequencies. In slow formations, estimation of low frequency asymptote of the leaky mode is one of common ways to extract formation...
Proceedings Papers

Paper presented at the SPWLA 18th Formation Evaluation Symposium of Japan, September 27–28, 2012
Paper Number: SPWLA-JFES-2012-S
... of mud slowness as an internal parameter to compensate for effects of undetermined mud slowness. The forward modeling of quadrupole dispersion behavior is based on a homogeneous isotropic (HI) formation model which already includes the tool-presence effects. An automatic selection method of frequency...

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