..., is globally sealed by the carbonate-clayey Letnyaya Formation. The Abakun reservoir (Nizhnyaya Tunguska horizon (A-V)) is separated from the Moktakon one by the Mara Formation fluid seal. The reservoir is ubiquitous within the area of study and comprised by the Abakun Formation, which correlates...

... stratigraphic division is the Olenchima Member (base of the Evenk Formation) underlain by a hiatus. The term Kochumdek Formation is no longer used in the Bakhta region and its lithologically distinct subformations (Yasenga, Moktakon, Mara, and Abakun) were raised to formation rank. The Olenchima Formation...

... the Yaseng, Moktakon, Mar, and Abakun formations. The formation temperature maxima in the Abakun horizon are envisaged in the Kholminskaya-212 well (>550 °C). The moderate-temperature field (300–400 °C) encompasses the areas of placement of the Moktakonskaya-211, Vakunaiskaya-3, Moktakonskaya-6 and -7...

... zones : 1 – Turukhan, 2 – Suringdakon, 3 – Tynepa, 4 – Svetlaya, 5 – Baikit. Formations: O 1 up + € 1 um – Ust’-Pelyadka and Ust’-Munduika, € 2 lt – Letnyaya, € 2 ol – Olenchimo, € 2 sc – salt-carbonate, € 1 cl – clayey limestones, € 1 gl – gray limestones, € 1–2 tn + € 1 dl – Tanachi and Del’tula, € 1...

... the Lower Cambrian Abakun Formation. In the Ust’-Del’tula area, a gas inflow from the Burus Formation was 160,000 m 3 /day, and in the Tanachi area, a gas inflow from the Lower–Middle Cambrian Tanachi Formation was 100,000 m 3 /day. The trap in the Moktakon Formation is confined to the reefs...

... and the Lower Precambrian rocks belong to the Yaseng, Moktakon, Mara, Abakun, Burus, Suringdakon, Bulai, Deltula, and Tanachi Formations. The position of the reflector H attributed to the base of the Letnyaya Formation can be checked against logs of reference well Tungusskaya 1. The Paleozoic section...

...Fig. 3. A fragment of the model for heating of the sedimentary cover by trap intrusions (South Tunguska petroliferous region). Zones of heating, °C: 1 – 700–500, 2 – 500–300, 3 – 300–150, 4 – < 150; 5 – traps; 6 – oil; 7 – gas; 8 – boreholes. Formations tn-dl – Tanachi...