Technology Challenges for Year-Round Oil and Gas Production at 74°N in the Barents Sea

2016 ◽  
Author(s):  
Olav Moslet Per ◽  
Gunnar Hjelmtveit Lille
Keyword(s):  
Oil And Gas ◽  
Barents Sea ◽  
Gas Production ◽  
Oil And Gas Production ◽  
The Barents Sea

scholarly journals Distribution of Nereilinum murmanicum (Annelida, Siboglinidae) in the Barents Sea in the Context of Its Oil and Gas Potential

2021 ◽  
Vol 9 (12) ◽  
pp. 1339
Author(s):  
Nadezda Karaseva ◽  
Madina Kanafina ◽  
Mikhail Gantsevich ◽  
Nadezhda Rimskaya-Korsakova ◽  
Denis Zakharov ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Oil And Gas ◽  
Barents Sea ◽  
Arctic Basin ◽  
Gas Production ◽  
The Arctic ◽  
Depth Range ◽  
Oxidation Of Methane ◽  
The Barents Sea ◽  
High Concentrations

Frenulate siboglinids are a characteristic component of communities living in various reducing environments, including sites with hydrocarbon seeps. High concentrations of hydrocarbons in the sediments of the Arctic basin seas, including the Barents Sea, suggest the presence of a rich siboglinid fauna there. This reflects the fact that microbiological oxidation of methane occurs under reducing conditions, generating high concentrations of hydrogen sulfide in the sediment. This hydrogen sulfide acts as an energy source for the sulfide-oxidizing symbionts of siboglinids. Here we report on the findings of the frenulate siboglinid species Nereilinum murmanicum made between 1993 and 2020 in the Barents Sea. These data significantly expand the range of this species and yield new information on its habitat distribution. The depth range of N. murmanicum was 75–375 m. The species was most abundant from 200 to 350 m and was associated with temperatures below 3 °C and salinities from 34.42 to 35.07. Most of the findings (43 locations or 74%) fall on areas highly promising for oil and gas production. Twenty-eight locations (48%) are associated with areas of known oil deposits, 22 locations (37%) with explored areas of gas hydrate deposits. N. murmanicum was also found near the largest gas fields in the Barents Sea, namely Shtokman, Ludlovskoye and Ledovoye.

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