Lithologic Reservoirs ›› 2018, Vol. 30 ›› Issue (1): 150-154.doi: 10.3969/j.issn.1673-8926.2018.01.015

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Classification of Fuyang oil reservoir with ultra-low permeability around placanticline of Daqing Oilfield

YIN Daiyin, XIANG Junhui, WANG Dongqi   

  1. School of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China
  • Received:2017-08-26 Revised:2017-09-30 Online:2018-01-21 Published:2018-01-21

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Abstract: In order to meet the demand of fine waterflooding of Fuyang oil reservoir with ultra-low permeability around placanticline of Daqing Oilfield,the method of reservoir classification limit is usually used to realize the reasonable classifications on ultra-low permeability reservoir blocks at early stage of production. However,for some ultra-low permeability blocks,different classification parameters fall into different classification results, which exacerbates the non-determinacy of results. To solve this problem,on the basis of existed achievements of classification limits for Fuyang oil reservoirs with ultra-low permeability,the method combined multi-parameter cluster analysis,dynamic and static consistency test with comprehensive evaluation was established. The classification evaluation criteria for two groups and four sub-groups were determined,and the classification results of each block were verified. The results show that this method solves the problem of classification difficulty caused by different classification parameters of individual blocks falling into different classification results,and realizes the reasonable classifications of 63 developed ultra-low permeability blocks. In addition,it has the characteristics of simple calculation and high accuracy,which provides a powerful basis for efficient and fine classifications of ultra-low permeability blocks in Daqing Oilfield.

Key words: Liushagang Formation, source-sink analysis, turbidite fan, meandering river delta, Weixinan Sag

CLC Number: 

  • TE348
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