Abstract
Amplitude versus offset analysis (AVO) has been used since the late 1970’ s to find hydrocarbon accumulations. The method is usually used in elastic sediments, although some geophysicists have maintained that AVO inversion works in carbonate reservoirs which have a reflector associated with them. Lama and Vutukuri, 1978, compiled laboratory data from carbonate cores collected throughout he world demonstrating the change in Poisson’s ratio with a change in pore fluids or mineralogy. Since Poisson’s ratio reflects changes in pore fluids or mineralogies in carbonates, AVO inversion can be used to determine the lithology and pore fluid changes.
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