AVOA technique for fracture characterization: Resolving ambiguity

A new computational technique of AVOA analysis (Amplitude Versus Offset and Azimuth) is developed which resolves an ambiguity in fracture–direction estimation. It analyzes a third term of Rüger's approximation for P–wave reflection coefficient to distinguish symmetry–axis and fracture–strike di...

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Bibliographic Details
Authors: Sabinin, V., Chichinina, T.
Format: article
Status:Published version
Publication Date:2008
Country:México
Institution:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repository:Geofísica Internacional
Language:Spanish
English
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/250
Online Access:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/250
Access Level:Open access
Keyword:AVOA
El medio HTI
Anisotropía sísmica
Caracterización de yacimientos fracturados
HTI media
Seismic anisotropy
Fracture-reservoir characterization
Description
Summary:A new computational technique of AVOA analysis (Amplitude Versus Offset and Azimuth) is developed which resolves an ambiguity in fracture–direction estimation. It analyzes a third term of Rüger's approximation for P–wave reflection coefficient to distinguish symmetry–axis and fracture–strike directions. The technique is tested on synthetic and field data.