Print Email Facebook Twitter Laboratory estimation of fracture compliance of a fluid-filled fracture using AVO response of a nonwelded interface Title Laboratory estimation of fracture compliance of a fluid-filled fracture using AVO response of a nonwelded interface Author Minato, S. (TU Delft Applied Geophysics and Petrophysics) Ghose, R. (TU Delft Applied Geophysics and Petrophysics) Contributor Sicking, Charles (editor) Ferguson, John (editor) Date 2016 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. Subject fracturesinversionreflectionAVO/AVAfluid To reference this document use: http://resolver.tudelft.nl/uuid:fc98036d-ff5d-4402-8834-5eecd07e75eb DOI https://doi.org/10.1190/segam2016-13840306.1 Publisher SEG Source SEG Technical Program Expanded Abstracts 2016 Event SEG International Exposition and 86th Annual Meeting, 2016-10-16 → 2016-10-21, Dallas & Kay Bailey Hutchison Convention Center, Dallas, United States Series SEG Technical Program Expanded Abstracts, 1949-4645, 2016 Part of collection Institutional Repository Document type conference paper Rights © 2016 S. Minato, R. Ghose Files PDF segabsAVO_minato2016_04.pdf 446.04 KB Close viewer /islandora/object/uuid:fc98036d-ff5d-4402-8834-5eecd07e75eb/datastream/OBJ/view