GALOKINEZ IN TECTONIC STRUCTURE OF KEMPENDYAI DEPRESSION

The problem of oil and gas potential between salt sediments in Kempendyai depression - one of the most promising oil and gas areas of Western Yakutia in close proximity to the main oil pipeline Eastern Siberia - Pacific Ocean (ES-PO). It is shown the possibility of the presence of complex of Lower Paleozoic salt sediments in Kempendyai depression, causes unique geological area and the difference of oil and gas potential. The existence of lower Paleozoic salt-complex in the lower part of the Kempendyai depression section of is supposed by comparing the exposed sections of the adjacent depressions and considering the geological history of this region of the Siberian platform. The analysis of spatial distribution of salt formations of the lower and middle Cambrian in the Ygyattinskaya, Nyuysko-Dzherbinskaya and Berezovskaya depressions shows that the most possibly Charskaya and Metegerskaya suites are saliferous in the lower Paleozoic part of the Kempendyai depression. It is concluded that existence of the lower Paleozoic salt-complex under the middle Paleozoic salt-complex can limit the oil and gas potential of intersalt sediments. It is noted that the sediments which overlying the lower Paleozoic salt-complex on the adjacent depressions have limited oil source geochemical indicators. Based on the study of the geological structure depression, concluded co-sedimentary nature of the development of local structures in the axial part of the basin of Upper Paleozoic and Mesozoic time. A basic model of the formation of local structures in the axial part of the basin due to galokinez of salts of chara and metegerskoy cambrian formations. The proposed model of the deep structure of Kempendyai depression can increase the potential for oil and gas of intersalt deposits due to the migration of hydrocarbons from the Lower Paleozoic salt complex. Shown encouraging results of deep drilling in the Kempendyai depression.