Laboratory estimation of fracture compliance of a fluid-filled fracture using AVO response of a nonwelded interface

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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 languageEnglish
Title of host publicationSEG Technical Program Expanded Abstracts 2016
EditorsCharles Sicking, John Ferguson
Number of pages6
Publication statusPublished - 2016
EventSEG International Exposition and 86th Annual Meeting - Dallas & Kay Bailey Hutchison Convention Center, Dallas, United States
Duration: 16 Oct 201621 Oct 2016
Conference number: 86

Publication series

NameSEG Technical Program Expanded Abstracts
ISSN (Electronic)1949-4645


ConferenceSEG International Exposition and 86th Annual Meeting
Abbreviated titleSEG 2016
Country/TerritoryUnited States
Internet address


  • fractures
  • inversion
  • reflection
  • fluid


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