ИСТИНА

The results of the experemental study of clay rocks and pore waters compositons of the oil Bazhenov formation in Western Siberia of Russian Federation (water extractions, rocks analysis on SEM with microprobe, complete rocks chemical analysis) showed that the oil reservoir of Bazhen formation can be formed due to the external influence of the hyperthermal acid fluids as a result of which the secondary minerals appeared in the strong leached clay rocks. It is known that the Bazhen formation is characterized as containing no mobile water but it was found that it contains the chemically bounded water entered into the composition of sulfate crystallohydrates.