Carbonate reservoirs evaluation is challenging from different aspects related to stratigraphic and structural features heterogeneities. One of the major challenges is fractures evaluation in terms of fractures nature, intensity, aperture and extension. Near and far field evaluation techniques had been utilized to achieve advanced fractures evaluation and modeling. This later is a key factor for a successful carbonate reservoir development.

Resistivity images and cores help in the quantitative analysis of near wellbore fractures intensity and aperture; high resolution seismic data can help to evaluate major structural features at a bigger scale. It is essential to bridge the gap between the borehole and field scale to further enhance evaluation of these fractures.

Using acquired sonic log and special processing; deep shear wave imaging (DSWI) uses cross-dipole shear wave components to "image" reflectors up to 70 ft (radius of investigation) away from the borehole, whether intersecting the borehole or not. This radial distance coverage can be even further away depending on many parameters.

The combination of resistivity imaging and acoustics deep shear wave imaging techniques is a great value added to fractured carbonate evaluation; this paper discusses a case study and lessons learned in a challenging evaluation well where both techniques were deployed to validate this process and enhance petrophysical and reservoir characterization models.

Future work will involve integration between results of acoustics deep shear wave imaging technique and both borehole seismic and surface seismic data to enhance the fracture model; and ultimately optimize well placement as well as reservoir performance.

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