Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (6): 1649-1659.doi: 10.13278/j.cnki.jjuese.201606105

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Cause of Oil-Gas Space Complementary Distribution and the Determining Methods of Distribution Range in Continental Faulted Depression

Jiang Guipu   

  1. Fourth Oil Recovery Plant of Daqing Oil Field Corporation, Ltd., Daqing 163511, Heilongjiang, China
  • Received:2016-02-21 Online:2016-11-26 Published:2016-11-26
  • Supported by:
    Supported by National Science Natural Foundation Project (41372153)

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Abstract: In order to study the oil-gas distribution principle in continental faulted depression,based on the research of the space relationship of distribution between structural and stratigraphic-lithologic reservoirs, between underlying and overlying adjustment reservoirs,the cause of oil-gas space complementary distribution and the determining methods of distribution range were studied by analyzing the relationship between distribution of different types of reservoir and their formation conditions. The result indicated that, traps of oil-gas accumulation and conditions of lateral migration are the main factors influencing the plane complementary distribution of structural and stratigraphic-lithologic reservoirs,the communication of reverse fault and the adjustment degree of underlying reservoir are the main factors influencing the complementary distribution of underlying and overlying adjustment reservoirs. The ratio of sandstone to stratum can be used to determine the complementary distribution range of structural and stratigraphic-lithologic reservoirs,when the ratio is greater than 40%, the structural reservoirs mainly formed, when the ratio is less than 20%, the stratigraphic-lithologic reservoirs mainly formed. The distribution range of overlying adjustment reservoirs can be determined by the distribution range of reverse fault in and near the underlying reservoirs,that is the complementary distribution range of underlying reservoirs.

Key words: continental faulted depression, ratio of sandstone to stratum, structural reservoir, stratigraphic-lithologic reservoir, oil-gas space of complementary distribution, reverse fault

CLC Number: 

  • P618.13
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