Quantitative producibility and textural analysis for carbonate reservoirs
Unlike sandstones, with their well-characterized correlations of porosity, permeability, and other reservoir properties, the heterogeneous pore systems of carbonate rocks defy routine petrophysical analysis. Carbonates are deposited primarily through biological activity. The resulting rock composition of fossil fragments and other grains of widely varying morphology produces highly complex pore shapes and sizes. Carbonate mineral species are also comparatively unstable and are subjected to multiple stages of dissolution, precipitation, and recrystallization, adding further complexity to the porosity and permeability of the rocks. Any comparatively simple relationships that might have existed between depositional attributes, porosity, and permeability are obscured by these multiple physical, biological, and chemical influences, operating at different scales, during and continuing after deposition.
The principal challenge for the accurate evaluation of carbonate formations is accounting for reservoir heterogeneity on a multiplicity of scales—of the grains, the pores, and the textures. The solution is the integrated Schlumberger Carbonate Advisor petrophysics and productivity analysis. This novel approach meets the carbonate challenge by integrating a comprehensive suite of petrophysical logging measurements for the quantitative determination of reservoir producibility in carbonate formations.
Carbonate Advisor analysis, integrating ECS elemental capture spectroscopy service with measurements from the MR Scanner expert magnetic resonance service and other logs, produces a single, complete formation evaluation of your carbonate reservoir.
Related services and products
Request More Information
|