Alexey Sivtsev¹ , Nikolay Timofeev¹ , Vitaly Meshcheryakov² , and Zaida Ivanova¹

¹ North-Eastern Federal University named after M.K. Ammosov, 50, Kulakovsky str., Yakutsk, 677000, Russia 2 JSC "Sakhatransneftegaz", 18, Kirova str., Yakutsk, 677000, Russia

Abstract

The article discusses the geological structure and prospects of oil and gas potential of the north-eastern part of the Predpatomsky regional trough. The features of the ratio of the structural plans of the upper and lower parts of the geological section due to thrust dislocations are indicated. It is assumed that deep drilling in the area of the Ulugur structure has not reached the target productive horizons in the autochthonous part of the section. Here, after clarifying the scope of seismic work, it is proposed to lay a exploratory well of greater depth. As another priority object for oil and gas, a potential zone of wedging of terrigenous deposits of the Vendian on the southwestern slope of the Suntar uplift is designated. The high prospects of the gas content of the upper part of the section, where gas deposits were established in newly discovered fields, were also noted. The results of direct geochemical testing of the Ulugur and Ergedzheysky license areas are presented, which allow localizing promising zones and areas of the studied territory