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dc.contributor.advisor Parks, Thomas W.
dc.creatorScheibner, David James
dc.date.accessioned 2018-12-18T21:25:11Z
dc.date.available 2018-12-18T21:25:11Z
dc.date.issued 1982
dc.identifier.urihttps://hdl.handle.net/1911/104543
dc.description.abstract A model, suggested by tbe ray expansion of Roever et al., is constructed to rapidly generate the compressional and shear refracted arrivals, known as head waves, received from a point source on the axis of an ideal fluid-filled borehole. An impulse response is derived, and its frequency characteristics are investigated. The waves are compared to those obtained by the real axis integration method of Tsang and Rader, which results in a complete waveform, including the modes as well as the refracted arrivals. The ray model gives accurate results for the compressional head wave. The shear region of the complete waveform contains strong modal interference, making it difficult to evaluate the quality of the ray model shear wave. A useful filter results from insight provided by the basic structure of the model. This filter can be used to estimate the borehole diameter or formation compressional velocity. It can also remove the second and later compressional arrivals, thus providing an accurate estimate of the source pulse and and a relatively uncorrupted vie of the initial arrival in the shear region.
dc.format.extent 75 pp
dc.language.iso eng
dc.title A ray model for head waves in a fluid-filled borehole
dc.identifier.digital RICE2178
dc.contributor.committeeMember Johnson, Don H.;Figueiredo, Rui J. P. de
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Electrical Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.format.digitalOrigin reformatted digital
dc.identifier.callno THESIS E.E. 1982 SCHEIBNER
dc.identifier.citation Scheibner, David James. "A ray model for head waves in a fluid-filled borehole." (1982) Master’s Thesis, Rice University. https://hdl.handle.net/1911/104543.


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