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Traveltime inversion using transmitted waves of offset VSP data

Geophysics

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Abstract

Estimation of layer parameters such as interval velocity, reflector depth, and dip can be formulated as a generalized linear inverse problem using observed arrival times. Based on a 2-D earth model, a computationally efficient and accurate formula is derived for traveltime inversion. This inversion method is applied to offset vertical seismic profile (VSP) data for estimating layer parameters using only transmitted first-arrival times. As opposed to a layer-stripping method, this method estimates all layer parameters simultaneously, thus reducing the cumulative error resulting from the errors in the upper layers. The result of real and modeled VSP data inversions indicates that traveltime inversion using transmitted first-arrival times from at least two source locations is a viable method for estimating interval velocities, reflector depths, and reflector dips. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Traveltime inversion using transmitted waves of offset VSP data
Series title:
Geophysics
Volume
55
Issue:
8
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
1089
Last page:
1097
Number of Pages:
9