eprintid: 177
rev_number: 4
eprint_status: archive
userid: 6
dir: disk0/00/00/01/77
datestamp: 2008-10-21
lastmod: 2015-05-29 19:48:45
status_changed: 2009-04-08 16:55:21
type: report
metadata_visibility: show
item_issues_count: 0
creators_name: Wheaton, Chad
contributors_name: Aruliah, Dhavide
contributors_name: Billings, Gary
contributors_name: Birukou, Mikalai
contributors_name: Dubash, Neville
contributors_name: Fairbairn, Leslie
contributors_name: Grossman, Jeff
contributors_name: Hegewisch, Katherine
contributors_name: Lee, Namyong
contributors_name: Swain, Robin
contributors_name: Slawinski, Michael
contributors_name: Trenado, Carlos
title: A Seismic Inversion Problem for an Anisotropic, Inhomogeneous Medium
ispublished: pub
subjects: utilities
studygroups: ipsw6
companyname: Talisman Energy
full_text_status: public
abstract: In this report, we consider the propagation of seismic waves through a medium that can be subdivided into of two distinct parts. The upper part is assumed to be azimuthally symmetric, linearly nonuniform with increasing depth, and the velocity dependence with direction consistent with elliptical anisotropy. The lower part, which is the layer of interest, is assumed to also be azimuthally symmetric, but uniform and nonelliptically anisotropic. Despite nonellipticity, we assume the angular dependence of the velocity can be described by a convex curve. 

Our goal is to produce a single source-single receiver model which uses modern seismic measurements to determine the elastic moduli of the lower media. Once known, geoscientists could better describe the angular dependence of the velocity in the layer of interest and also would have some clues at to the actual material composing it.
problem_statement: In the petroleum industry, many geoscientists rely on information provided by seismic data. Based on the interpretation of seismic data, geophysicists and geologists attempt to identify and target areas of economic importance, specifically hydrocarbon traps. We wish to extract from the data as much information as possible, and in particular are interested in measuring the physical properties of the rock through which seismic waves must propagate.
date: 2002
date_type: published
pages: 13
citation:   Wheaton, Chad  (2002) A Seismic Inversion Problem for an Anisotropic, Inhomogeneous Medium.  [Study Group Report]     
document_url: http://miis.maths.ox.ac.uk/miis/177/1/talisman_energy.pdf