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![]() The rocks were obtained from the Andes south flank in the Venezuela's western basin. For this reason, photothermal Beam Deflection Spectrometry (BDS) technique for determination of materials' thermal properties together with other methods such as Energy Dispersive X-ray Scanning Electron Microscopy (SEM-EDX) for determining the chemical composition and sample structure, as well as optical microscopy to determine the particles size, were applied for characterization of sedimentary rocks. This should be done along with the thermal properties, density, conductivity, diffusivity and effusivity that are intimately related with them. Thus, the porosity and permeability, as well as the chemical composition must be quantified as precisely as possible. ![]() Accurate knowledge of these parameters for any hydrocarbon reservoir is required for efficient development, management, and prediction of future performance of the oilfield. The porosity of the reservoir rocks and their permeability are the most fundamental physical properties with respect to the storage and transmission of fluids, mainly oil characterization. Petrophysical properties of rocks (thermal diffusivity and conductivity, porosity and density) as well as the correlation between them are of great importance for many geoscientific applications. Determination of petrophysical properties of sedimentary rocks by optical methods
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