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Article Navigation >  Acta Sedimentologica Sinica  > 1998  >  16(2): 117-123

Shen Shouwen, Shen Mingdao, Liang Dachuan, Zhang Guozhao. A Study on Relationship Between Orientation Index of Shales by X-ray Diffraction and Physicochemical Properties and Well-bore Stability[J]. Acta Sedimentologica Sinica, 1998, 16(2): 117-123.
Citation: Shen Shouwen, Shen Mingdao, Liang Dachuan, Zhang Guozhao. A Study on Relationship Between Orientation Index of Shales by X-ray Diffraction and Physicochemical Properties and Well-bore Stability[J]. Acta Sedimentologica Sinica, 1998, 16(2): 117-123.
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A Study on Relationship Between Orientation Index of Shales by X-ray Diffraction and Physicochemical Properties and Well-bore Stability

  • 1.

    Southwest Petroleum Institute, Nanchong, Sichuan 637001;

  • 2.

    Chengde Petroleum School, Chengde, Hebei 067000

  • Received Date: 1997-01-01
  • Rev Recd Date: 1997-05-01
  • Publish Date: 1998-06-10
  • This paper gives out a method for the determination of Orientation Index of shales by X-ray diffrac-tion. Meanwhile, the relations between orientation Index and mineral compositions and physicochemical properties (density, recovery percent, expansion percent, cation exchange capacity etc.) are discussed. A new concept-Comprehensive Index of shales is introduced on the basis of Orientation Index of shales. Then, the shales of easy collapsing formations are classified into four types according to Orientation Index and Comprehensive Index of shales. This work has an important theoretical significance and applied value in oil drilling engineering for studying mechanism of wellbore stability and preventing collapse of wellbore.
  • [1] .徐同台. 国外不稳定泥页岩分类简述. 钻井液与完井液, 1989, (2): 32～34
    [2] .沈守文. 粘土矿物与石油的钻采工程. 中国矿物岩石地球化学学会第五届年会论文集. 兰州: 兰州大学出版社, 1994. 60～61
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Publishing history
  • Received:  1997-01-01
  • Revised:  1997-05-01
  • Published:  1998-06-10

A Study on Relationship Between Orientation Index of Shales by X-ray Diffraction and Physicochemical Properties and Well-bore Stability

  • 1. Southwest Petroleum Institute, Nanchong, Sichuan 637001;
  • 2. Chengde Petroleum School, Chengde, Hebei 067000
  • Received Date: 1997-01-01
  • Rev Recd Date: 1997-05-01
  • Publish Date: 1998-06-10

Abstract: This paper gives out a method for the determination of Orientation Index of shales by X-ray diffrac-tion. Meanwhile, the relations between orientation Index and mineral compositions and physicochemical properties (density, recovery percent, expansion percent, cation exchange capacity etc.) are discussed. A new concept-Comprehensive Index of shales is introduced on the basis of Orientation Index of shales. Then, the shales of easy collapsing formations are classified into four types according to Orientation Index and Comprehensive Index of shales. This work has an important theoretical significance and applied value in oil drilling engineering for studying mechanism of wellbore stability and preventing collapse of wellbore.

Shen Shouwen, Shen Mingdao, Liang Dachuan, Zhang Guozhao. A Study on Relationship Between Orientation Index of Shales by X-ray Diffraction and Physicochemical Properties and Well-bore Stability[J]. Acta Sedimentologica Sinica, 1998, 16(2): 117-123.
Citation: Shen Shouwen, Shen Mingdao, Liang Dachuan, Zhang Guozhao. A Study on Relationship Between Orientation Index of Shales by X-ray Diffraction and Physicochemical Properties and Well-bore Stability[J]. Acta Sedimentologica Sinica, 1998, 16(2): 117-123.
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