Nuclear Magnetic Resonance (NMR) today is widely used in the oil industry for reservoir porosity and permeability estimations. But it is also vital in the oil industry to get information about rheological properties and composition of oil as early as possible. There are several methods of estimating fluid’s viscosity basing on the NMR data, but no one is fully accepted. As for oil group analysis, there is a little material about low-field NMR relaxometry composition predictions in the literature, although hydrocarbon composition strongly influences on the rheological properties. That is why this work is devoted to hydrocarbons group analysis and rheological properties evaluation by NMR relaxometry.


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