Petrophysical properties such as wettability and surface area control hydrocarbon storage and transport properties. In the work being reported in this paper,we present the theoretical aspects as well as experimental technique and results of testing and validating a proposed calorimetry technique for specific surface area and wettability characterization. Identical immersion calorimetry experiments with slightly different initial conditions of the sample are analyzed to obtain these two properties of a core sample. Validation of the experimental technique is an important step,which is performed in this work by comparing the surface areas of the samples obtained by the proposed technique with the surface area obtained by the well-known Brunauer-EmmettTaylor(BET)gas-adsorption technique. Surface area measurements are performed on a set of core plugs and reference samples,including hydrophilic and hydrophobic powders of pure substances,minerals,and clays.
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