Periglacial Landforms and Fluid Dynamics in the Permafrost Domain: A Case from the Taz Peninsula, West Siberia

Natalya Misyurkeeva, Igor Buddo, Gleb Kraev, Aleksandr Smirnov, Alexey Nezhdanov, Ivan Shelokhov, Anna Kurchatova and Andrei Belonosov
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Natalya Misyurkeeva: SIGMA-GEO, 664039 Irkutsk, Russia
Igor Buddo: SIGMA-GEO, 664039 Irkutsk, Russia
Gleb Kraev: Arctic Research Center of the Yamal-Nenets Autonomous District, 629008 Salekhard, Russia
Aleksandr Smirnov: Gazprom VNIIGAZ, 625000 Tyumen, Russia
Alexey Nezhdanov: Gazprom VNIIGAZ, 625000 Tyumen, Russia
Ivan Shelokhov: SIGMA-GEO, 664039 Irkutsk, Russia
Anna Kurchatova: Messoyakhaneftegaz, 625027 Tyumen, Russia
Andrei Belonosov: Department of Applied Geophysics, Institute of Geology and Oil and Gas Production, Industrial University of Tyumen, 625000 Tyumen, Russia

Energies, 2022, vol. 15, issue 8, 1-14

Abstract: Most of the developing oil and gas fields in Russia are located in Arctic regions and constructed on permafrost, where recent environmental changes cause multiple hazards for their infrastructure. The blowing-up of pingos, resulting in the formation of gas emission craters, is one of the disastrous processes associated both with these external changes and, likely, with deep sources of hydrocarbons. We traced the channels of fluid migration which link a gas features reservoirs with periglacial phenomena associated with such craters with the set of geophysical methods, including common depth point and shallow transient electromagnetic methods, on an area of a prospected gas field. We found correlated vertical anomalies of acoustic coherence and electrical resistivity associated with gas chimneys in the upper 500–600 m of the section. The thickness of the ice-bonded permafrost acting as a seal for fluids decreased in the chimney zone, forming 25–50 m deep pockets in the permafrost base. Three pingos out of six were located above chimneys in the study area of 200 km 2 . Two lakes with parapets typical for craters were found. We conclude that the combination of applied methods is efficacious in terms of identifying this type of hazard and locating potentially hazardous objects in the given territory.

Keywords: shallow transient electromagnetic method; common depth point method; pingos; permafrost thickness; natural gas; taliks; fluid migration; upper part of the section; gas chimneys; gas emission craters (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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