oa AVO Application in a Carbonate Offshore Oil Field, U.A.E.

We will present fluid substitution well log modeling results based on Gassmann's equation and application of conventional AVO and other techniques such as Elastic Impedance and Simultaneous Inversion followed by lambda-rho mu-rho (LMR) techniques in a pilot area of interest. The results of the pilot study were validated with the known well fluid status in the pilot area. Mapping of the different water-oil-gas fluid response using the LMR technique shows a reasonably good agreement with currently known well saturations. It is, however, difficult to discriminate reservoir sub-layer water-cut percentages due to data resolution limitations. Generally, the results of the analysis indicate potential to identify hydrocarbon to water fluid contents, with the above constraints.