Oil & Gas Geology ›› 2004, Vol. 25 ›› Issue (5): 548-553.doi: 10.11743/ogg20040514

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Carboniferous non-structural traps in Tazhong area and prediction of favorable exploration targets

Su Zongfu, Deng Hongwen, Fan Tailiang   

  1. China University of Geosciences, Beijing
  • Received:2004-08-18 Online:2004-10-25 Published:2012-01-16

Abstract:

The Carboniferous non-structural traps in Tazhong area can be divided into stratigraphic traps,lithologic traps and combination traps according to their genesis and shapes.Formations of these traps are closely related with unconformities,paleotopography and depositional settings.Non-structural traps are characterized by their lateral zonation and vertical layering due to the control of their geneses.Based on the developmental features and spatial distribution characteristics of Carboniferous non-structural traps in the study area,it is believed that the overlap traps of Donghe Formation sandstone,lithologic traps of sandstones filling the eroded ravines and valleys in the central uplift and the combination traps in northern Arwati are relatively favorable exploration targets,of which the former two are the most favorable,thus priority should be given to them in exploration.

Key words: Tazhong area, Carboniferous, sandstone in Donghe Formation, non-structural trap, stratigraphic trap, lithologic trap, combination trap

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