Geochemistry of Oils and Condensates from the Tambey Group of Fields (Yamal Peninsula, West Siberia)

2021 ◽  
Vol 29 (4) ◽  
pp. 495-510
Author(s):  
E. A. FURSENKO ◽  
A. I. BURUKHINA
Keyword(s):  
Geosciences ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 393
Author(s):  
Evgeny Mikhailovich Chuvilin ◽  
Natalia Sergeevna Sokolova ◽  
Boris Aleksandrovich Bukhanov ◽  
Dinara Anvarovna Davletshina ◽  
Mikhail Yurievich Spasennykh

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.


Author(s):  
Maria Bulakh ◽  
Anatoly B. Zolotukhin ◽  
Ove T. Gudmestad

Huge reserves of hydrocarbons on the shelf of the Kara Sea, adjacent to the west coast of the Yamal Peninsula are to be developed in the XXI century. This large oil and gas area in northern West Siberia has prospective resources of 56 trillion barrels of oil equivalents (boe). The Russia Federation has no other regions with similar concentrations of undeveloped hydrocarbons. Creating this unique Kara Sea gas production centre could provide in the years 2015–2030 a production of at least 800 billion Sm3 of gas per year providing both domestic and external demand with this fuel, and supply it to the external market, (http://oilgasindustry.ru).


2020 ◽  
Author(s):  
Timo Kumpula ◽  
Roza Laptander ◽  
Bruce C. Forbes

<p>The traditional landuse in the Yamal is reindeer herding practiced by nomadic Nenets herders. The hydrocarbon industry is presently the source of most ecological changes in the Yamal peninsula and socio-economic impacts experienced by migratory Nenets herders who move annually between winter pastures at treeline and the coastal summer pastures by the Kara Sea.</p><p>In central Yamal peninsula which is permafrost area both natural and anthropogenic changes have occurred during the past 40 years. Mega size Bovanenkovo Gas Field was discovered in 1972 and it was opened in production and in 2012. We have studied gas field development and natural changes like increases in shrub growth, cryogenic landslides, drying lakes in the region and these impacts to Nenets reindeer herding.</p><p>Nenets managing collective and privately owned herds of reindeer have proven adapt in responding to a broad range of intensifying industrial impacts at the same time as they have been dealing with symptoms of a warming climate and thawing permafrost phenomena.</p><p>The results of climate change together with the industrial development of the Yamal Peninsula have a serious impact to the Nenets nomadic reindeer husbandry. Their consequences make Nenets reindeer herders to change their migration routes and the way of working with reindeer. During several years, we were making interviews with Nenets reindeer herders about the influence of climate change and industrialization of the tundra on the quality of Nenets nomads’ life and their work with reindeer. Reindeer herders said that impacts of industrial development have reduced their migration opportunities, as well as the quality of pastures for grazing, which has fatal the effects during icing on the tundra in the winter. At the same time, in the summer reindeer have more food because increasing of the green vegetation. </p><p>Here we detail both the climate change impacts and spatial extent of gas field growth, landslides drying lakes, shrub increase and the dynamic relationship between Nenets nomads and their rapidly evolving social-ecological system.</p>


2016 ◽  
Vol 12 (11) ◽  
pp. 20160466 ◽  
Author(s):  
Bruce C. Forbes ◽  
Timo Kumpula ◽  
Nina Meschtyb ◽  
Roza Laptander ◽  
Marc Macias-Fauria ◽  
...  

Sea ice loss is accelerating in the Barents and Kara Seas (BKS). Assessing potential linkages between sea ice retreat/thinning and the region's ancient and unique social–ecological systems is a pressing task. Tundra nomadism remains a vitally important livelihood for indigenous Nenets and their large reindeer herds. Warming summer air temperatures have been linked to more frequent and sustained summer high-pressure systems over West Siberia, Russia, but not to sea ice retreat. At the same time, autumn/winter rain-on-snow (ROS) events have become more frequent and intense. Here, we review evidence for autumn atmospheric warming and precipitation increases over Arctic coastal lands in proximity to BKS ice loss. Two major ROS events during November 2006 and 2013 led to massive winter reindeer mortality episodes on the Yamal Peninsula. Fieldwork with migratory herders has revealed that the ecological and socio-economic impacts from the catastrophic 2013 event will unfold for years to come. The suggested link between sea ice loss, more frequent and intense ROS events and high reindeer mortality has serious implications for the future of tundra Nenets nomadism.


2019 ◽  
Vol 12 (1) ◽  
pp. 260 ◽  
Author(s):  
Aleksey Sidorchuk

The Yamal Peninsula occupies the northern part of the West Siberian Plain in Russia. This territory has rapidly developed due to the exploitation of several gas fields. At the same time, the Yamal Peninsula is one of the most severely gullied landscapes in the Arctic. The potential risk of damage to the environment or structures and the cost of such damages are very high there. The erosion potential is the cumulative erosion by runoff above critical, calculated for each point at a catchment. Calculations take into account the geomorphic, lithological, and vegetation cover thresholds, realized in the form of critical runoff depth of erosion initiation. It also takes into account action of all flows between the critical and maximum runoff. The calculations for several gullied catchments on the Yamal Peninsula show the uneven distribution of erosion potential level with the maximum of gully erosion on the steep banks of the river valleys and on gully heads with bare soil. The area with potential erosion in these catchments varies within the range of 17–33%. The erosion on the Yamal Peninsula is mainly of natural origin. It occurs on steep slopes and at the heads of gullies. These landforms are not used for exploitation camps and settlements. Nevertheless, the linear structures, such as railways, roads and pipelines, can cross these unstable landforms with the risk of damage. Erosion potential increases at the spots with bare soil, which appear due to both construction work and natural processes, such as slumping.


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