Xinjiang Petroleum Geology ›› 2002, Vol. 23 ›› Issue (1): 70-73.

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A Discussion About Origin of Kela-2Giant Gas Field

ZHANG Jing-lian   

  • Received:2001-06-25 Online:2002-02-01 Published:2020-07-31
  • About author:ZHANG Jin-lian(1941-),Male, Professor,Petroleum Geology,Northwest Institute of Geology,CNPC,Lanzhou, Gansu 730020,China

Abstract: The macroscopic geologic setting and geochemical characteristics of natural gas in Kela 2 giant gas field of Tarim basin are presented in this paper. It is considered that both the natural gas and the formation water in this gas field are originated from the mantle. Kela 2 giant gas field is just located in great structural geochemical frontiers. While the low velocity layer and high conductivity formation in deep crust of Kuche depression are favorable to Fisher-Tropsch process to the inorganic hydrocarbons. lts three deep fractures offer the path that the fluid migrates upward in the depression. Also, this paper point out emphatically the inorganic origin of hydrocarbon in Kela 2 giant gas field, although there exist some different understandings of it.

Key words: Tarim basin, Kuche depression, natural gas, inorganic origin, low velocity-high conductivity formation

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