Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2005, Vol. 26 ›› Issue (1): 47-49.

Previous Articles     Next Articles

Using Fluid Inclusion to Determine Gas Accumulation Stage of Neopaleozoic in Shenmu Area, Ordos Basin

LI Ming-rui1, ZHANG Qing2, SUN Liu-yi2, LIU Xin-she2   

  1. 1. Department of Exploration, Changqing Oilfeld Company, PetroChina, Xian, Shaanxi 710021, China;
    2. Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi'an, Shaanxi 710021, China
  • Received:2004-03-18 Online:2005-02-01 Published:2020-08-24

PDF

231

Abstract: The analysis of fuid inclusions from 7 wells (e.g. Shen-3 Well) in Shenmu area, Ordos basin and the discussion about the phase state and passage of gas migration during the formation of Neopaleozoic Upper Shihezi and Shiqianfeng gas pools and the accumu-lated time in this area are made, according to the structural history, deposition and buried history, thermal evolution history and hydrocar-bon-generating story. Study shows that three times of gas migration from Farly Jurassic to Late Cretaceous take place in Upper Shihezi and Shiqianfeng formations, of which the second migration of end of Late Jurassic- -start of Early Cretaceous and the third migration of end of Early Cretaceous-start of Late Cretaceous play great significant roles in the gas accumulations here. The phase state of migration is dominated by the mixed phases.

Key words: Ordos basin, inclusion, homogenization temperature, natural gas, hydrocarbon migration

CLC Number: