Prospects and Challenges for the Spatial Quantification of the Diffusion of Fluids Containing ¹ H in the Pore System of Rock Cores

Nuclear magnetic resonance (MR) (NMR) is commonly used for the determination of rock porosity, as well pore size distribution (PSD) and tortuosity, required to handle hydrocarbon exploitation. Emerging technologies NMR equipment now enable visualization porosity using imaging (MRI). Currently, single-point most common MRI technique employed, but diffusion-weighted has been attracting attention geologists geophysicists. In this study, a more advanced technique, diffusion tensor (DTI), proposed characterization core samples. The main purpose paper demonstrate usefulness DTI in petrophysical rocks discuss its strengths. As an example, carbonate sample was examined DTI. (DT) obtained DT parameters (mean diffusivity, MD; fractional anisotropy, FA; three eigenvalues; components; proton density, PD) were visualized 2D 3D. Each parameter described utility terms space analyzed. addition, new parameter, principal tracts, introduced based on tractography performed study. analysis summarized set resultant ellipsoid that delivers complementary information about sample's network microgeometry, including referential measurements anisotropic phantoms. applications distribution, tortuosity conductivity are also shown. study ends with consideration potential prospects challenges DTI-based examination