The reservoirs of the oil-bearing Tutleym formation, Bazhenov horizon (analog of the Bazhenov Formation for Middle Nazym Oil Field), are studied. Their material composition, porosity and ...permeability, the geochemical characteristics of their organic matter, and pore space characteristics are examined, and the factors affecting the reservoir porosity and permeability are found. The changes in the structure of the porous medium, which provide primary oil migration from oil source rocks into the Tutleym formation reservoirs, are revealed.
Structure and optical properties of ZnSe/SiO
2
layered nanocomposites obtained using microwave magnetron sputtering have been studied. The nanocomposites are X-ray amorphous at relatively small ...thicknesses of the zinc selenide layers. When the thickness of the zinc selenide layers exceeds 20 Å, ZnSe/SiO
2
films contain SiO
2
amorphous phase and zinc selenide cubic nanocrystallites. It has been demonstrated that the thickness of zinc selenide layers affects the microstresses, refractive index, and band gap.
The possible reservoir type of the Bazhenov Formation relative to the intervals enriched in phosphates (apatite varieties) is described in this work. The phosphate rocks are characterized by a highly ...developed pore space; their porosity can reach up to 14%. Along with this, these rocks have explicit geochemical characteristics of oil-reservoir rocks in comparison with other rock samples in the well. As an example, the productivity index and oil-saturation index for phosphates are twice as high as the background values. The composition of such rocks can slightly vary: fluorine can be observed in phosphate minerals, while the rock is always enriched in organic matter (>8 wt %).
This work is dedicated to interpretation of the results of complex laboratory petrophysical studies of core samples of the rocks of the Bazhenovkaya Formation from several wells at Western Siberian ...deposits. The major aim of this study is the comparison and substantiation of analytical results that were obtained by various methods of determination of petrophysical rock properties, which is necessary to reveal the methods of complex petrophysical studies that are the most correct and applicable for the rocks of the Bazhenovskaya Formation.
A spectral method is developed to determine the content of fullerene in polymers formed in its presence during the free-radical polymerization and copolymerization of methyl methacrylate, allyl ...methacrylate, allyl chloride, and styrene. The method is based on measurement of absorption coefficients for the ππ*-excited transition of fullerene cores at 330 nm that is due to their insertion into a polymer chain and the related distortion of the closed polyene system of carbon-carbon bonds.
Structural transitions that occur in polymers subjected to simple uniaxial tensile deformation are described for the first time. The behavior of folded nanocrystallites with initial sizes of 28 × 28 ...× 17 nm is most interesting. Their thicknesses strongly decrease upon deformation (from 17 nm to less than 10 nm), whereas the longitudinal sizes change only slightly. This gradual flattening of nanoclusters leads to their dislocation melting (as an intermediate stage of the phase transitions predicted by Kosterlitz and Thouless). It is shown by the methods of pole figures and atomic-force microscopy that screw dislocations are spontaneously formed in the region of elastic-plastic deformation to decelerate the first-order phase transition of melting type and that the polymer forms a new lamellar spatially inhomogeneous phase with unusual physical and mechanical properties.
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