Gas content of the Upper Cenomanian deposits in Western Siberia

Agalakov, S.E.; Новоселова, М. Ю.

doi:10.31660/0445-0108-2019-4-10-23

Cited by 1 publication

(4 citation statements)

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“…In addition, the presence of gas-filled chambers (cavities/voids) in the PF is confirmed by the known drilling tool failures during well construction [39]. The abovementioned information indicates the high level of gas content in nearsurface deposits on the Arctic land and on the adjacent shelf with similar geological conditions [1][2][3][4][5][6]27,28]. Due to the wide distribution of gas pools in free and/or hydrated states in the near-surface PF conditions, in total they contain huge energy potential.…”

Section: Introductionmentioning

confidence: 69%

“…This is confirmed by the drilling mud blowout with a density of 1.22 g/cm 3 from a depth of 131 m during the drilling of the Bovanenkovskaya-26 well. The use of drilling mud with a density of 1.57 g/cm 3 did not stop the emission of the gas [1], which indicates the presence of reservoir pressures higher than the hydrostatic pressure by 1.6 times or more.…”

Section: Generalizing Discussion Of Gas Saturation Of the Cryolithosp...mentioning

confidence: 95%

“…The main HC pools are confined to the Jurassic-Cretaceous complex of clastic deposits. At the same time, large pools of dry gas (reserves of many tens and hundreds of billion cubic meters) have been discovered in a number of fields at shallow depths (500-900 mbsf) in a regionally gas-bearing highly porous (up to 30-38%) poorly cemented sandstone reservoir of the Cenomanian age (100-700 m thick) [1,9,27,28,54,[65][66][67].…”

Section: Description Of the Study Regionmentioning

confidence: 99%

“…The reserves of near-surface free gas pools can contain tens or hundreds of millions, or sometimes even billions, of cubic meters of gas, which can be of significant commercial interest for their development [1,11,16,17,52,[62][63][64]. In particular, in 2005 in the northern part of the North Sea in a homogeneous highly porous (on average 33%) Pleistocene sand reservoir at a depth of 210 mbsf (580-594 mbsl), the Peon dry gas field was discovered, with recoverable gas reserves of 27.1 billion m 3 [63].…”

Section: Introductionmentioning

confidence: 99%

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Permanent Gas Emission from the Seyakha Crater of Gas Blowout, Yamal Peninsula, Russian Arctic

Bogoyavlensky

Nikonov

et al. 2021

Energies

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The article is devoted to the four-year (2017–2020) monitoring of gas emissions from the bottom of the Seyakha Crater, located in the central part of the Yamal Peninsula (north of Western Siberia). The crater was formed on 28 June 2017 due to a powerful blowout, self-ignition and explosion of gas (mainly methane) at the site of a heaving mound in the river channel. On the basis of a comprehensive analysis of expeditionary geological and geophysical data (a set of geophysical equipment, including echo sounders and GPR was used) and remote sensing data (from space and with the use of UAVs), the continuing nature of the gas emissions from the bottom of the crater was proven. It was revealed that the area of gas seeps in 2019 and 2020 increased by about 10 times compared to 2017 and 2018. Gas in the cryolithosphere of the Arctic exists in free and hydrated states, has a predominantly methane composition, whereas this methane is of a biochemical, thermogenic and/or mixed type. It was concluded that the cryolithosphere of Yamal has a high level of gas saturation and is an almost inexhaustible unconventional source of energy resources for the serving of local needs.

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Section: Introductionmentioning

confidence: 69%

Section: Generalizing Discussion Of Gas Saturation Of the Cryolithosp...mentioning

confidence: 95%