Abstract
We explore the potential of multi-angle AVO inversion of P-P and P-S reflections from a fracture to estimate fracture proper- ties. Although AVO analysis of welded interface like geologi- cal layer boundaries is common, the use of AVO variations for nonwelded boundaries like fractures is yet to be investigated. We conduct laboratory experiments to measure reflection re- sponses of dry and wet fractures. The observed P-P reflec- tions of the fracture and the fracture aperture are very well pre- dicted by the nonwelded interface model. We invert the angle- dependent P-P reflectivity of the fracture to estimate both nor- mal and tangential fracture compliances. The estimated value of the normal compliance is accurate, and it is also possible to obtain the value of the non-zero tangential compliance. We find that supplementing the information of converted P-S re- flections in the AVO inversion greatly improves the estimate of the tangential compliance. The calculated compliance ra- tio clearly shows the existence of fluid in the fracture. This finding can be crucial for new applications in a wide range of scale - from earthquake seismology, deep and shallow seismic exploration, to nondestructive material testing.
Original language | English |
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Title of host publication | SEG Technical Program Expanded Abstracts 2016 |
Editors | Charles Sicking, John Ferguson |
Publisher | SEG |
Pages | 505-510 |
Number of pages | 6 |
DOIs | |
Publication status | Published - 2016 |
Event | SEG International Exposition and 86th Annual Meeting - Dallas & Kay Bailey Hutchison Convention Center, Dallas, United States Duration: 16 Oct 2016 → 21 Oct 2016 Conference number: 86 http://seg.org/Events/Annual-Meeting |
Publication series
Name | SEG Technical Program Expanded Abstracts |
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Publisher | SEG |
Volume | 2016 |
ISSN (Electronic) | 1949-4645 |
Conference
Conference | SEG International Exposition and 86th Annual Meeting |
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Abbreviated title | SEG 2016 |
Country/Territory | United States |
City | Dallas |
Period | 16/10/16 → 21/10/16 |
Internet address |
Keywords
- fractures
- inversion
- reflection
- AVO/AVA
- fluid