scholarly journals TECHNOLOGICAL COMPLEX FOR INCREASING THE EFFECTIVITY OF GAS WELLS OPERATION ON THE FIELDS OF THE FINAL STAGE OF EXPLOITATION IN THE CONDITIONS OF THE ARCTIC AND WEST SIBERIA

2017 ◽  
Author(s):  
D.A. Kaushansky
Keyword(s):  
Final Stage ◽  
West Siberia ◽  
The Arctic ◽  
Gas Wells ◽  
Technological Complex

scholarly journals SPECIFIC FEATURES OF DEVELOPMENT OF WEST SIBERIA TURONIAN DEPOSITS BY BRANCHED-HOLE GAS WELLS

2015 ◽  
pp. 50-52
Author(s):  
I. A. Kustyshev ◽  
A. V. Kustyshev
Keyword(s):  
Arctic Region ◽  
West Siberia ◽  
Oil Fields ◽  
The Arctic ◽  
Gas Wells ◽  
Wide Experience ◽  
Extreme North ◽  
Gas Fields ◽  
The Arctic Region

The use of branched-hole wells in old fully developed oilfields permits to increase hydrocarbons production at the expense of involving the undrained areas in development. The most wide experience of multihole wells operation in Russia was gained in oil fields; and in gas fields the construction of such wells was launched in the field Yujno-Russkoye, West Siberia. The gained experience in designing, construction and operation of multihole wells in the Extreme North fields will enable to recommend these designs in the Arctic region conditions including offshore fields.

SYSTEM ANALYSIS OF GEOLOGICAL-AND-PRODUCTION DATA FOR PREDICTION TEMPERATURE REGIME OF GAS WELLS OPERATION USING A GEOLOGO-TECHNOLOGICAL MODEL

2015 ◽  
pp. 56-61
Author(s):  
A. V. Kustyshev ◽  
A. V. Krasovskii ◽  
E. S. Zimin ◽  
D. A. Tatarikov
Keyword(s):  
Process Parameters ◽  
Temperature Regime ◽  
System Analysis ◽  
West Siberia ◽  
Production Data ◽  
Gas Wells ◽  
Method Of Calculation ◽  
Technological Model

An algorithm has been developed, and a method of calculation of wellhead temperature in gas wells has been realized based on the geologo-technological model. The developed method enables to calculate the forecast process parameters taking into consideration the temperature regime of gas wells. The method was tested using the above mentioned model of the Cenomanian deposit of one of West Siberia fields. The results of these calculations have been later taken into account in designing the deposit development.

Morphological development, distribution and ecology of the arctic oribatid mite Hermannia scabra (Acari: Oribatida: Hermanniidae) and synonymy of Hermannia gigantea

Zootaxa ◽  
2019 ◽  
Vol 4717 (1) ◽  
pp. 104-136
Author(s):  
SERGEY G. ERMILOV ◽  
OLGA L. MAKAROVA ◽  
MIKHAIL S. BIZIN
Keyword(s):  
Differential Diagnosis ◽  
Morphological Traits ◽  
Oribatid Mite ◽  
West Siberia ◽  
The Arctic ◽  
Morphological Development ◽  
Distribution And Ecology ◽  
Morphological Differences ◽  
Northern Species ◽  
Middle Siberia

The topotypes (adult and juvenile instars) of the arctic oribatid mite Hermannia scabra (L. Koch, 1879) (Oribatida, Hermanniidae) from Vaygach Island (easternmost arctic Europe) were investigated and compared with those of Hermannia gigantea Sitnikova, 1975 collected from southwest Taymyr Peninsula, northern Middle Siberia, resulting in the following new taxonomic proposal: Hermannia scabra (L. Koch, 1879) (= Hermannia gigantea Sitnikova, 1975, syn. nov.). The morphology of its all instars is described and illustrated in detail on the base of specimens collected from the northern West Siberia (Shokalsky Island). The main morphological traits are summarized. Two northern species of Hermannia with granulate notogaster, namely H. scabra and H. nodosa Michael, 1988, were regularly mixed up in the literature. Their differential diagnosis is provided after elaboration of spacious materials. The morphological differences of juvenile instars of five species of Hermannia (H. gibba (C.L. Koch, 1839), H. jesti Travé, 1977, H. nodosa, H. reticulata Thörell, 1871, and H. scabra) are given. The biotopic preferences of arctic members of Hermannia are briefly observed. 

scholarly journals Integrative taxonomy of an arctic bumblebee species complex highlights a new cryptic species (Apidae: Bombus)

2019 ◽  
Vol 187 (3) ◽  
pp. 599-621 ◽  
Author(s):  
Baptiste Martinet ◽  
Thomas Lecocq ◽  
Nicolas Brasero ◽  
Maxence Gerard ◽  
Klára Urbanová ◽  
...  
Keyword(s):  
Cryptic Species ◽  
Species Complex ◽  
Taxonomic Status ◽  
West Siberia ◽  
Integrative Taxonomy ◽  
The Arctic ◽  
Arctic Circle ◽  
Bumblebee Species ◽  
Species Groups ◽  
Taxonomic Approach

AbstractBumblebees have been the focus of much research, but the taxonomy of many species groups is still unclear, especially for circumpolar species. Delimiting species based on multisource datasets provides a solution to overcome current systematic issues of closely related populations. Here, we use an integrative taxonomic approach based on new genetic and eco-chemical datasets to resolve the taxonomic status of Bombus lapponicus and Bombus sylvicola. Our results support the conspecific status of B. lapponicus and B. sylvicola and that the low gradual divergence around the Arctic Circle between Fennoscandia and Alaska does not imply speciation in this species complex. Therefore, based on our molecular and morphological analyses, we propose to assign them subspecific status: Bombus lapponicus lapponicus from Fennoscandia and West Siberia and Bombus lapponicus sylvicola comb. nov. from Alaska and Yukon. In addition, our analyses reveal a cryptic species in the B. lapponicus complex from Alaska, which we describe here as new: Bombus (Pyrobombus) interacti sp. nov.

Dachas on permafrost: the creation of nature among Arctic Russian city-dwellers

Polar Record ◽  
2014 ◽  
Vol 51 (6) ◽  
pp. 576-589 ◽  
Author(s):  
Florian Stammler ◽  
Lena Sidorova
Keyword(s):  
West Siberia ◽  
Urban Life ◽  
The Arctic ◽  
Murmansk Oblast ◽  
Russian Arctic ◽  
Human Environment ◽  
The North ◽  
Attachment To Place ◽  
Summer Cottage ◽  
Urban Livelihood

ABSTRACTThis article analyses the phenomenon of the post-Soviet Russian summer cottage, dacha, in the Arctic. We take an ethnographic comparative perspective for contributing to the refinement of our understanding of human-environment relations and urban anthropology of incomer-northerners, those with roots somewhere outside the north. Evidence from fieldwork in Murmansk Oblast, West Siberia and Sakha-Yakutia shows how for a socialist and post-socialist northern urban livelihood, the dacha has become an indispensable counterpart of life in the urban concrete housing blocks for most Russian northern inhabitants. We explore in this article the importance of dacha for northern identity of urban dwellers, by analysing spheres of individual and collective agency, freedom, attachment to place and land. We conclude that the dacha movement has filled a gap that had been left open by Soviet Arctic urbanisation: a dacha has come to stand for a human-environment relationship that gradually re-introduces rurality to urban life in the Russian Arctic so permanently that dacha places start losing their seasonal character.

scholarly journals Formation of Gas-Emission Craters in Northern West Siberia: Shallow Controls

Geosciences ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 393
Author(s):  
Evgeny Mikhailovich Chuvilin ◽  
Natalia Sergeevna Sokolova ◽  
Boris Aleksandrovich Bukhanov ◽  
Dinara Anvarovna Davletshina ◽  
Mikhail Yurievich Spasennykh
Keyword(s):  
Climate Warming ◽  
Cold Water ◽  
West Siberia ◽  
The Arctic ◽  
Yamal Peninsula ◽  
Geological Data ◽  
Formation Model ◽  
Gas Emission ◽  
Ground Ice ◽  
The Yamal Peninsula

Gas-emission craters discovered in northern West Siberia may arise under a specific combination of shallow and deep-seated permafrost conditions. A formation model for such craters is suggested based on cryological and geological data from the Yamal Peninsula, where shallow permafrost encloses thick ground ice and lenses of intra- and subpermafrost saline cold water (cryopegs). Additionally, the permafrost in the area is highly saturated with gas and stores large accumulations of hydrocarbons that release gas-water fluids rising to the surface through faulted and fractured crusts. Gas emission craters in the Arctic can form in the presence of gas-filled cavities in ground ice caused by climate warming, rich sources of gas that can migrate and accumulate under pressure in the cavities, intrapermafrost gas-water fluids that circulate more rapidly in degrading permafrost, or weak permafrost caps over gas pools.

scholarly journals SEISMIC AND GEOLOGICAL CHARACTERISTICS OF SEDIMENTARY SEQUENCES AND PETROLEUM POTENTIAL OF THE YAMAL, GYDAN AND SOUTH KARA PETROLEUM AREAS (Arctic regions of West Siberia, the Kara Sea shelf)

2019 ◽  
pp. 10-26
Author(s):  
V. A. Kontorovich ◽  
D. V. Ayunova ◽  
S. M. Guseva ◽  
L. M. Kalinina ◽  
A. Yu. Kalinin ◽  
...  
Keyword(s):  
Sedimentary Cover ◽  
West Siberia ◽  
Kara Sea ◽  
The Arctic ◽  
Bright Spot ◽  
Petroleum Potential ◽  
Seismic Sequences ◽  
Sedimentary Sequences ◽  
Arctic Regions ◽  
Seismic Anomaly

There are six sedimentary seismic sequences overlying pre-Mesozoic basement in the Mesozoic-Cenozoic sedimentary cover of the Arctic regions of West Siberia and the Kara Sea shelf. The paper describes the seismic markers characteristics and the seismic-facial features of the Paleozoic, Triassic, Jurassic, Neocomian, Apt-Cenomanian and TuronianCenozoic seismic sequences. It was concluded that the features of large Cenomanian gas pools are seismic markers associated with gas-water contacts; Apt-Albian pools are displayed on time sections by a bright spot seismic anomaly.

scholarly journals First record of ranavirus (Ranavirus sp.) in Siberia, Russia

2021 ◽  
Author(s):  
Artem Lisachov ◽  
Lada Lisachova ◽  
Evgeniy Simonov
Keyword(s):  
Western Europe ◽  
West Siberia ◽  
First Record ◽  
The Arctic ◽  
Amphibian Species ◽  
Northern Asia ◽  
Tissue Samples ◽  
Dna Viruses ◽  
Arctic Regions ◽  
In The Wild

Ranaviruses are a group of double-strand DNA viruses that infect fish, amphibians and reptiles. These viruses are responsible for mass fish and amphibian mortality events worldwide, both in the wild and at the fish and amphibian farms. The number of detected epizootics has grown significantly in recent years. In Eastern Europe and Northern Asia, including Russia, very few ranavirosis monitoring studies have been conducted, in contrast with Western Europe and America. In the present work, we used a qPCR assay to survey for the first time the amphibian populations of West Siberia (Russia) for the presence of ranaviruses. In total, we studied 252 tissue samples from six amphibian species, collected across West Siberia from the south to the Arctic regions. We report a single infected sample: a common toad (Bufo bufo) captured near Tyumen city. The phylogenetic analysis showed that the detected virus strain belongs to the CMTV lineage. This is only the second observation of Ranavirus in Russia.

Modelling of long-term permafrost evolution in the discontinuous permafrost zone of North-West Siberia

2020 ◽  
Author(s):  
Ekaterina Ezhova ◽  
Ilmo Kukkonen ◽  
Elli Suhonen ◽  
Olga Ponomareva ◽  
Andrey Gravis ◽  
...  
Keyword(s):  
Snow Cover ◽  
Warm Season ◽  
Thermal Conditions ◽  
West Siberia ◽  
The Arctic ◽  
High Porosity ◽  
Permafrost Degradation ◽  
North West ◽  
Discontinuous Permafrost

<p>The rate of climate warming in North-West Siberia is among the highest in the world and this trend is especially pronounced in summer [1]. Analysis of permafrost thermal conditions in this area provides plausible scenarios of permafrost degradation also elsewhere. An increase in the summer mean temperature together with the prolongation of the warm season results in the increase of the thawing degree-days enhancing thawing of permafrost. Here we present the results of decadal temperature observations from three boreholes near Nadym, North-West Siberia. We further use the results and the observed cryolithological structure of soils in two boreholes to model the long-term evolution of the deep permafrost under two climate scenarios, RCP2.6 (climate action, fast reduction of CO<sub>2 </sub>emissions) and RCP8.5 (‘business as usual’). Both borehole sites have a topmost high-porosity, high-ice content layer of peat which helps prolonging the degradation. The main difference between the boreholes is snow cover resulting from the difference of borehole positions (one is located on the top of the hill). Our results suggest that under RCP8.5 scenario permafrost will degrade in both boreholes. On the contrary, under RCP2.6 scenario permafrost will degrade in one borehole with the deeper snow cover, where it already shows the signs of degradation. For the other borehole, the model predicts that permafrost will not degrade within the next 300 years, although the permafrost temperatures are eventually above -1°C.</p><p>[1] Frey K.E. & Smith L.C. Recent temperature and precipitation increases in West Siberia and their association with the Arctic Oscillation. Polar Research <strong>22(2)</strong>, 287–300 (2003).</p>

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