Suchergebnisse

Equilibrium mineral assemblages at temperatures from 50 °C to 350 °C and pressure of saturated water vapor were established by the thermodynamic modeling of hydrothermal reaction on the Bazhenov Formation rocks. The calculation results show that the mineral parageneses vary slightly with the temperature increase: for zeolites stilbite-laumontite-wairakite row is typical, kaolinite is replaced by montmorillonite and/or albite, pyrite — by pyrrhotite, calcite — by dolomite, brannerite — by uraninite. The simulation results are confirmed by experimental data.

The composition of Bazhenov and Abalak Formation rocks of Western Siberia is presented. Correlations of macro- and micro-components concentration with the base mineral and organic matter content in rocks are showed. Investigations of trace elements allow determining sedimentation conditions: redox conditions, hydrogen sulfide contamination and the source of the sedimentary material. The results showed that the rocks of the Bazhenov Formation were formed at low flows of clastic material under reducing conditions and a periodic hydrogen sulphide mode.

The experimental results on the synthetic oil production from Domanik Formation rocks under hydrothermal conditions are given. Oil fractions extracting potential of the rocks under hydrothermal was shown to be up to 60 mg/g or 6,0 wt.%. Inorganic additives (sodium carbonate or silica) incorporation does not influence on the oil recovery factor. Meanwhile the amount of recoverable oil products depends on the mineral composition of the rock. The dependence between the percentage of hydrocarbons emission and mineral composition of the rocks was determined. Clay minerals and silica increase the yield of synthetic oil, carbonates, conversely, inhibit the process.

A methodic of destruction of objects with hardly dissolvable matrix (earth materials, tableted medical products) for subsequent determination of microelements by high-resolution mass- spectrometry with inductively coupled plasma is developed. Analytical and methodical problems, appearing during of a sample collection and preparation at investigated objects, are described, the ways of their overcoming are proposed. The opportunity of carrying out of quantitative analysis of investigated objects after dissolution by means of using multielemental standard solutions is shown. Accuracy of a developed methodic of sample preparation was checked by analysis of standard samples of earth materials.