Skip to Main Content
Book Chapter

Laboratory Simulation of the Influence of Earth Stress Changes on Wave Velocities

By
Rune M. Holt
Rune M. Holt
1
IKU Petroleum Research, Trondheim, Norway
2
NTH Norwegian Institute of Technology, Trondheim, Norway
Search for other works by this author on:
Erling Fjær
Erling Fjær
1
IKU Petroleum Research, Trondheim, Norway
Search for other works by this author on:
Anne-Kari Furre
Anne-Kari Furre
2
NTH Norwegian Institute of Technology, Trondheim, Norway
Search for other works by this author on:
Published:
January 01, 1996

Abstract

Synthetic sandstones have been manufactured under controlled stress conditions. The velocities of P- and S-waves were measured in two orthogonal directions, permitting studies of effects of cementation, compaction, unloading and reloading on velocities. Assuming that the samples and the experimental procedures are representative for earth materials and earth stress changes, these effects may be related to processes like lithification, burial / fluid withdrawal, uplift / coring, and burial after uplift / core testing under stress. The results show that unloading leads to largely reduced velocities, and also to a velocity anisotropy associated with the initial stress anisotropy. Strong stress dependency is prominent in materials which have been previously unloaded, indicating that laboratory measured stress dependency may often be a result of the unloading while coring.

You do not currently have access to this article.

Figures & Tables

Contents

Seismic Anisotropy

Erling Fjær
Erling Fjær
Search for other works by this author on:
Rune M. Holt
Rune M. Holt
Search for other works by this author on:
Jaswant S. Rathore
Jaswant S. Rathore
Search for other works by this author on:
Society of Exploration Geophysicists
ISBN electronic:
9781560802693
Publication date:
January 01, 1996

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal