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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2013, Vol. 14 Issue (2): 147-154    DOI: 10.1631/jzus.A1200165
Geology and Geological Engineering     
Identification of waterflooded zones and the impact of waterflooding on reservoir properties of the Funing Formation in the Subei Basin, China
Peng-hui Zhang, Jin-liang Zhang, Wei-wei Ren, Jun Xie, Ming Li, Jing-zhe Li, Fang Ding, Jin-kai Wang, Zi-rui Dong
College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China; College of Geological Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China; Henan Oilfield Research Institute, Nanyang 473132, China; College of Marine Geosciences, Ocean University of China, Qingdao 266100, China; Schlumberger China, Chengdu 610041, China
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Abstract  This paper describes the identification of waterflooded zones and the impact of waterflooding on reservoir properties of sandstones of the Funing Formation at the Gao 6 Fault-block of the Gaoji Oilfield, in the Subei Basin, east China. This work presents a new approach based on a back-propagation neural network using well log data to train the network, and then generating a cross-plot plate to identify waterflooded zones. A neural network was designed and trained, and the results show that the new method is better than traditional methods. For a comparative study, two representative wells at the Gao 6 Fault-block were chosen for analysis: one from a waterflooded zone, and the other from a zone without waterflooding. Results from this analysis were used to develop a better understanding of the impact of waterflooding on reservoir properties. A range of changes are shown to have taken place in the waterflooded zone, including changes in microscopic pore structure, fluids, and minerals.

Key words： Waterflooding      Reservoir properties      Neural network      Gao 6 Fault-block      Gaoji Oilfield     
Received: 30 June 2012      Published: 31 January 2013
CLC:  TE122  
  TE347  
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Peng-hui Zhang
Zi-rui Dong
Jun Xie
Jin-liang Zhang
Wei-wei Ren
Ming Li
Jing-zhe Li
Fang Ding
Jin-kai Wang
Cite this article:

Peng-hui Zhang, Jin-liang Zhang, Wei-wei Ren, Jun Xie, Ming Li, Jing-zhe Li, Fang Ding, Jin-kai Wang, Zi-rui Dong. Identification of waterflooded zones and the impact of waterflooding on reservoir properties of the Funing Formation in the Subei Basin, China. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2013, 14(2): 147-154.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1200165     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2013/V14/I2/147

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