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Amplitude
versus offset (AVO) analysis modelling in hydrocarbon
exploration: A case study
Züheyr Kamacı* and Canan Çiftçi
Department of Geophysics Engineering, Faculty of Engineering
and Architecture, Suleyman Demirel University, Isparta
32260, Turkey.
*Corressponding author. E-mail:
zuheyrkamaci@gmail.com. Tel: +90 246 211 13 57.
Fax: +90
246 237 08 59.
Accepted 15 February, 2011 |
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In this study, the geological model used for amplitude
versus offset (AVO) analysis, was created by synthetic well
logs. The geological model is comprised of shale,
gassy-sand, clay and sand layers. The synthetic seismic
records including 230 shooting and 60 folds were constructed
over the model. The data processing has been applied to the
synthetic records. After the data processing, AVO analysis
has been applied to synthetic data. Class III AVO anomaly
has been obtained from the common depth point gathers. Also
intercept, gradient, intercept* gradient and cross-plot
attributes had been calculated. Analysis has shown that the
amplitude increases with increasing offset. The gassy sand
anomalies were also obtained by the AVO attributes. In
addition, the advantages and disadvantages of AVO analysis
were discussed in this study.
Key words:
Geological model, reflection amplitude, reflection angle,
hydrocarbon rock physics, amplitude versus offset attributes.
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