...Yu.B. Trzhtsinsky; E.A. Kozyreva; Ya.B. Radziminovich Abstract Research has shown that the creation of the Bratsk water reservoir considerably changed the seismic conditions in this area of the Siberian Platform. Seismic records revealed a significant increase in the energy classes of earthquakes...

...Fig. 5 Total volumes and width of shore washout in loess-Iike loams on the Pervomaiskii area of the Bratsk water reservoir for the period of its exploitation. ...

... us to interpret them as related to an oil pool (or rather to haloes over it). The presence of a resistivity anomaly over the pool is an additional though unnecessary indicator of an oil reservoir. Figure 5 , a–c shows processed field data from profile 5 (Bratsk gas and condensate deposit...

... in extrastrong saturated brines. These brines were also subjected to gravitational sinking into the Vendian reservoirs, which was the main cause of the inverse vertical hydrogeochemical zoning in the hydrogeologic subsalt formation. The brine metamorphism processes and temperature changes in the rock horizons...

... of Unga Bay of the Bratsk water reservoir (left bank of the Angara River) permitted us to trace terrace-like surfaces throughout the bay at a height of ∼450 m ( Fig. 1 , A , area I; Fig. 1 , B ). The gently dipping upper surface area is up to 600 m in width. Terrace-like surfaces are traced even...

... parts of the section, which usually do not coincide in plan. Prospectors must take into account the position of regional stratigraphic and lithological pinchouts, barrier reefs, series of “sealed traps,” secondary reservoirs in carbonate rocks, hydrodynamic and capillary screens, and especially gas...

... in eastern Russia [ 1 , 2 ]. A series of large and unique hydrocarbon (HC) deposits has been revealed there. Of special interest is the giant Yurubchen-Tokhomo deposit, where HC pools occur in Riphean and Vendian reservoirs [ 3 , 4 ]. The second stage of the formation of oil pools on the eastern...

...A.B. Khomenko; E.N. Kuznetsova; A.O. Gordeeva ABSTRACT The paper presents evidence that a large synsedimentary uplift existed in the southern Siberian Platform in the Early Paleozoic and since the Early Cambrian has been a zone of oil and gas accumulation. A number of carbonate reservoirs within...

... Angarella shells attached to the ground and with large gastropods. Conodonts were also found. The zone is no thicker than 150 m. Predominantly normal-marine shallow-water environments (BFZ III) existed between the Bratsk water reservoir and the middle Chuna River (Uda River). In this area Andreeva...

... reservoirs of the Siberian Platform. The map is based on over 1500 deep logs and seismic data obtained by geophysicists from Krasnoyarsk, Yakutsk, and Irkutsk through the 1970–90s. The results of previous seismic surveys were reprocessed using update flows. Mapping for such a large territory...

..., Kochema, 23, Tetere, 24, Angara–Kovykta, 25, Upper Lena–Kuda, 26, Bratsk. petroleum accumulation zones proved revealed and predicted petroliferous complexes Lena–Tunguska province In oil geology, a petroleum accumulation zone is a group of petroleum fields localized in similar...

... hydrocarbon accumulations were not proven to exist in the Sayan–Yenisei potential petroleum area. Nearby gas fields are located in the Lower Angara petroleum region and Angara–Lena petroleum area. Proven hydrocarbon reservoirs are distributed in terrigenous Vendian, carbonate Vendian and Lower, and partly...

... obtained promising results in several regions of Russia. 15 06 2003 02 11 2005 © 2006 Society of Exploration Geophysicists. All rights reserved. 2006 In spite of the progress in seismic prospecting methods for investigating geologic structures associated with oil or gas reservoirs...

... the main regularities of formation of reservoirs in Vendian-Cambrian terrigenous deposits. His predictions of petroleum potential of the region were justified. By now, a number of petroleum deposits have been discovered here, including the giant and unique Kovyktinskoe gas-condensate and Verkhnechonskoe...

...) dissection of the Vendian OGC at the search stage consists in clarifying the forecast of the distribution of possible fluid reservoirs. Detailed stratigraphic charts have been compiled according to the profiles of wells. As a result, maps of sections with different layer structure of the Vendian horizons...

... February 1996 ( M ≈ 4), which took place near the Bratsk Reservoir ( Golenetskii, 1998 ). The southern salient of the Irkutsk amphitheater is one of the most interesting parts of the Siberian Platform. Most of the large populated places in southern Cisbaikalia are concentrated here; therefore...

... the possibilities to resolve deep reservoirs by measuring the horizontal and vertical components of the transient magnetic field and compare the depth resolution of magnetic and inductive methods. * Corresponding author. E-mail address : [email protected] (G.M. Morozova) 14 9 2007 31 1 2008...

... al., 2002; Johansen et al., 2005), was first developed as a deepwater method. In water depths less than 300 m, airwave effects can significantly mask the reservoir response (Mittet et al., 2004; Dell'Aversana, 2007). In many cases, particularly where the seabed is relatively flat, traditional...

... of the Baikit, Taiga, Oskoba, and Soba areas. In the adjacent areas of the Angara– Lena basin, the reservoir includes the widespread Parfenovo and Upper Tira aquifers, which have economic oil and gas potential in the Bratsk and Ayan areas. In this respect of special interest is the large and highly...