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The rheological properties of oils from 3 wells of Yablunivske field (Poltava region, Ukraine) were investigated using a rotational viscometer. According to the dynamic viscosity and shear stress dependence on the shear velocity, the nature of the oil flow has been determined, which is of practical importance for evaluating the effectiveness of different modes of action on the rheological behavior of oils during their extraction and transportation.

The article presents the experimental results regarding the properties of oils from Yablunivske deposit, Poltava region, Ukraine. The obtained data allows to choose further possible processing. The crude oil was fractionated through siulation distillation, the main physico-chemical characteristics, structural and mechanical properties, as well as metals content andf elemental composition were determined. The oils under study were found to be extra-heave high-sulfuric oils, without light distillates; their density, viscosity and metal contents are high.