Lithologic Reservoirs ›› 2010, Vol. 22 ›› Issue (3): 48-52.doi: 10.3969/j.issn.1673-8926.2010.03.010

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Characteristics of Chang 6 reservoir in Zhengzhuang oil region of Ordos Basin

WANG Yang1,WANG Guicheng2,WANG Yujun2,JIA Wei3   

  1. 1．Wangjiachuan Oil Production Plant，Yanchang Oilfield Company，Yan’an 717100，China；2．Xi’an Shiyou University， Xi’ an 710065．China；3．No．5 Oil Production Plant，Changqing Oilfield Company，PetroChina，Xi’an 710021，China
  • Online:2010-09-15 Published:2010-09-15

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Abstract:

Based on the core analysis and microscopic observation，it is believed that the rocks of Chang 6 reservoir are mainly composed of arkose with lOW compositional maturity and medium texture maturity．Reservoir properties are mainly low porosity and low-super low permeability．The reservoir distribution is mainly controlled by sedimentary facies．The sedimentation type is mainly delta front subfacies．Subaqueous distributary channel and mouth bar sand bodies are the main reservoirs．The denudation of laumontite developed well in Chang 6 reservoir，which plays a key role to the reservoir improvement．

Key words: ground stress, fracture direction, carbonate rocks, Ordovician, imaging logging

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