Bazhenov Formation Explained

The Bazhenov Formation or Bazhenov Shale is a geological stratum in the West Siberian basin. It was formed from sediment deposited in a deep-water sea in Tithonian–early Berriasian time. The sea covered more than one million square kilometers in the central basin area. Highly organic-rich siliceous shales were deposited during this time in anoxic conditions on the sea bottom.[1] The sea was connected to the world's oceans and contains trace minerals derived from dissolved minerals and organic materials similar to sapropel sediments in the Black Sea.[2]

In addition to being a prolific deep water marine source rock (the International Energy Agency has called it the world's largest oil source rock)[3] the formation is believed to contain substantial reserves of unconventional liquid hydrocarbons in form of tight oil and solid hydrocarbons in form of kerogen. These deposits occur at depths of 2500- with the thickness from 10to.[4] [5]

An estimate by Wood Mackenzie of the Bazhenov Formation puts oil in place at 2e12oilbbl.[6] In 2013, the Russian oil company Rosneft estimated recoverable reserves of 22e9oilbbl for the formation.[7] The Russian government agency Rosnedra estimated in 2012 that the Bazhenov contained 180 to 360 billion barrels of recoverable reserves.[8] According to U.S. Energy Information Administration estimates published in June 2013, the total Bazhenov shale prospective area has a resource of a risked tight oil in-place of 1243e9oilbbl and a risked shale gas in-place of 1920e12cuft, with 74.6e9oilbbl of oil and 1920e12cuft of gas as the risked, technically recoverable.[9] Total hydrocarbon resources are estimated in 50 to 150 billion tonnes.[4]

Notes and References

  1. Ulmishek. Gregory F.. Petroleum Geology and Resources of the West Siberian Basin, Russia. U.S. Geological Survey Bulletin. 2003. 2201-G. 49. 14 October 2012.
  2. V. M. . Gavshin . V. A. . Zakharov . Geochemistry of the Upper Jurassic-Lower Cretaceous Bazhenov Formation, West Siberia. Economic Geology. February 1996. 91. 1. 122–133. 10.2113/gsecongeo.91.1.122. 1996EcGeo..91..122G . April 1, 2013. It was formed in a marine basin connected to the world oceans.
  3. News: Astakhova . Olesya . 18 February 2021 . Russia makes progress on shale oil output but hurdles remain . Reuters . The International Energy Agency has described Russia’s Bazhenov formation as the world’s largest source rock . 1 May 2022.
  4. The Impact of Thermogas Technologies on the Bazhenov Formation Studies Results . V.I. . Kokorev . V.I. . Darischev . I.A. . Ahmadeyshin . K.A. . Schekoldin . A.A. . Bokserman . All Days . 10.2118/166890-MS . . 2013.
  5. Unconventional Oil Accumulations in the Upper Jurassic Bazhenov Black Shale Formation, West Siberioan Basin: A Self-sourced Reservoir System . N.V. . Lopatin . S.L. . Zubairaev . I.M. . Kos . T.P. . Emets . E.A. . Romanov . O.V. . Malchikhina . Journal of Petroleum Geology . 26 . 2 . April 2003 . 225–244 . . 10.1111/j.1747-5457.2003.tb00027.x . 2003JPetG..26..225L . 129272662 . 2017-11-11. subscription .
  6. News: Russia gears up for shale boom. March 31, 2013. The Financial Times. March 31, 2013. Guy Chazan.
  7. Igor Sechin, New age of oil, Rosneft, March 2013
  8. Nadia Rodova, Will Russia replicate US success in tight oil development?, Platts, 23 August 2012.
  9. Web site: Technically Recoverable Shale Oil and Shale Gas Resources: An Assessment of 137 Shale Formations in 41 Countries Outside the United States. U.S. Energy Information Administration (EIA). June 11, 2013. June 2013.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Bazhenov Formation".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.