Pressure in a fluid‐filled borehole caused by a seismic source in stratified media
Name
Peng-1996-Pressure in.pdf
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1.27 MB
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Checksum (MD5)
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Author(s)
Peng, Chengbin
Lee, Jung M.
Toksoz, M. Nafi
Date Issued
January 1996
Journal
Geophysics
Publisher
Society of Exploration Geophysicists
Citation
Peng, Chengbin, Jung M. Lee, and M. Nafi Toksöz. “Pressure in a Fluid‐filled Borehole Caused by a Seismic Source in Stratified Media.” GEOPHYSICS 61.1 (1996): 43–55. © 1996 Society of Exploration Geophysicists
Version
Final published version
Abstract
A method for numerically simulating hydrophone vertical seismic profiles (VSP) and crosswell data measured in a fluid-filled borehole (either open or cased) embedded in stratified media is presented. The method makes use of both the borehole coupling theory and the global matrix formulation for computing synthetic seismograms in a stratified medium. The global matrix formulation is used to calculate the stress field at the borehole location. Borehole coupling theory is then employed to obtain the pressure in the borehole fluid. Comparisons with exact solutions for an open borehole
in a homogeneous and unbounded formation show that this method is accurate for frequencies below 2 kHz. This method is used to model the Kent Cliffs hydrophone VSP data, where good agreement between the numerical simulations and the field measurements has been found, in both traveltimes and rms amplitudes of the direct P-wave. Examples show that this method is efficient and accurate, and can be applied to model VSP and crosswell experiments using an array of hydrophones.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Massachusetts Institute of Technology. Earth Resources Laboratory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1190/1.1443955
