Differential tectonic movement of Yanchang Formation in southwestern margin of Ordos Basin and its geologic significance

  • HOU Bin ,
  • GUIZhixian ,
  • XU Huiqun ,
  • HEJiacheng
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  • 1. Research Institute of Exploration and Development, PetroChina Changing Oilfield Company, Xi’an 710018, China; 2 . Changqing Exploration Department, Bureau of Geophysical Prospecting, CNPC, Xi’an 710018, China

Online published: 2010-09-15

Abstract

Huanxian- Zhenyuan area is one of the major exploration areas in southwestern margin of Ordos Basin in recent years. Some new geology phenomenons appeared and were cared in the exploration. Based on the analysis of tuff, seismites and limestone gravel in Chang 7 to Chang 6 reservoir and thicken layers in Chang 7 to Chang 1 reservoir, it is believed that areal tectonic setting during Chang 7 to Chang 6 depositional stage is different from that during Chang 9 to Chang 8 depositional stage, which results in different formations, different sequence, different sedimentary settings, different lithologies and different reservoir properties. Different exploration methods are proposed for different layers and different reservoirs.

Cite this article

HOU Bin , GUIZhixian , XU Huiqun , HEJiacheng . Differential tectonic movement of Yanchang Formation in southwestern margin of Ordos Basin and its geologic significance[J]. Lithologic Reservoirs, 2010 , 22(3) : 78 -82 . DOI: 10.3969/j.issn.1673-8926.2010.03.015

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