Ultrasonic And Numerical Modeling Of Reflections From Simulated Fractured Reservoirs
Name
1997.6 Theophanis_Zhu.pdf
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498.24 KB
Format
Adobe PDF
Checksum (MD5)
45485c58937a182c45354eaec99c2e38
Author(s)
Theophanis, Stephen
Zhu, Xiang
Date Issued
1997
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;1997-06
Abstract
Vve examine seismic waves scattered from anisotropic heterogeneity with laboratory data
and numerical modeling in order to develop modeling techniques for the characterization
of fracture properties in tight gas sands from surface seismic reflection data. Laboratory models representing features of a fractured reservoir were constructed using Phenolite (the "reservoir") embedded in a Lucite background, and seismic surveys were gathered over these models. In parallel with laboratory measurements, finite-difference modeling of reflections from a fractured medium were carried out. Fracture zone properties were calculated using an effective medium theory; the variation of fracture density produced a heterogeneous medium. The heterogeneity was modeled with a stochastic process, characterized by a probability density function and an auto-correlation function. Results from both modeling efforts show that prestacked AVO data can contain important information describing reservoir heterogeneity.
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