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The Leading Edge; April 2007; v. 26; no. 4; p. 420-426; DOI: 10.1190/1.2723204
© 2007 Society of Exploration Geophysicists
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The Backus number

Chris Liner and Tong Fei

Saudi Aramco, Dhahran, Saudi Arabia

Corresponding author: christopher.liner{at}aramco.com

In this paper we discuss the process and accuracy of estimating seismic anisotropy parameters from standard well log data using Backus averaging. The work is validated by numerical modeling that leads to the concept of a dimensionless number we call the Backus number, B. The value of B allows us to determine the averaging length that is "correct" for a given frequency and purpose.






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