Xinjiang Petroleum Geology ›› 2001, Vol. 22 ›› Issue (2): 177-178.

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The Petroliferous Features of Collapse Sediment Zone of Niochem Group in West Siberia

C.B. YALESHOV, V.A. KAZANINKOV, U.N. KA ROGOKIN   

  • Received:1999-11-15 Online:2001-04-01 Published:2020-08-13
  • About author:C.B. YALESHOV, Male, Russian, Research Fellow, Oil and Gas Geology Institute, West Siberia Branch of Science Academy of Russia, New Siberia 630090, Russia

Abstract: This paper stated the sedimentary structure of Niochem formation in west Siberia with a wedge-shape structure. Study results suggested the wedge shape rock body is formed in collapse sediment depositional process during marine ingression and regression cycles procedure. These wedge-shape rock bodies could be divided into two kinds of sandstone-siltstone reservoir rock bodies relating to continental shelf deposition and ending deposition respectively. Various kinds of trapments are widely developed in each kind reservoir bodies. It is considered that the wedge-shape. rock body should be regarded as special formation and special oil-gas bearing unit in geologic studies.

Key words: Siberia, Niochem formation, collapse sediment, wedge-shape body

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