中国物理B ›› 2016, Vol. 25 ›› Issue (10): 100204-100204.doi: 10.1088/1674-1056/25/10/100204

• GENERAL • 上一篇    下一篇

Terahertz-dependent identification of simulated hole shapes in oil—gas reservoirs

Ri-Ma Bao(宝日玛), Hong-Lei Zhan(詹洪磊), Xin-Yang Miao(苗昕扬), Kun Zhao(赵昆), Cheng-Jing Feng(冯程静), Chen Dong(董晨), Yi-Zhang Li(李羿璋), Li-Zhi Xiao(肖立志)   

  1. 1 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    2 Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, China;
    3 Key Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF), Beijing 100723, China
  • 收稿日期:2016-02-03 修回日期:2016-05-27 出版日期:2016-10-05 发布日期:2016-10-05
  • 通讯作者: Kun Zhao E-mail:zhk@cup.edu.cn
  • 基金资助:
    Project supported by the National Nature Science Foundation of China (Grant No. 61405259), the National Basic Research Program of China (Grant No. 2014CB744302), and the Specially Founded Program on National Key Scientific Instruments and Equipment Development, China (Grant No. 2012YQ140005).

Terahertz-dependent identification of simulated hole shapes in oil—gas reservoirs

Ri-Ma Bao(宝日玛)1,2, Hong-Lei Zhan(詹洪磊)1,2, Xin-Yang Miao(苗昕扬)2, Kun Zhao(赵昆)1,2,3, Cheng-Jing Feng(冯程静)2, Chen Dong(董晨)2, Yi-Zhang Li(李羿璋)2, Li-Zhi Xiao(肖立志)1   

  1. 1 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    2 Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, China;
    3 Key Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF), Beijing 100723, China
  • Received:2016-02-03 Revised:2016-05-27 Online:2016-10-05 Published:2016-10-05
  • Contact: Kun Zhao E-mail:zhk@cup.edu.cn
  • Supported by:
    Project supported by the National Nature Science Foundation of China (Grant No. 61405259), the National Basic Research Program of China (Grant No. 2014CB744302), and the Specially Founded Program on National Key Scientific Instruments and Equipment Development, China (Grant No. 2012YQ140005).

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摘要： Detecting holes in oil-gas reservoirs is vital to the evaluation of reservoir potential. The main objective of this study is to demonstrate the feasibility of identifying general micro-hole shapes, including triangular, circular, and square shapes, in oil-gas reservoirs by adopting terahertz time-domain spectroscopy (THz-TDS). We evaluate the THz absorption responses of punched silicon (Si) wafers having micro-holes with sizes of 20 μm-500 μm. Principal component analysis (PCA) is used to establish a model between THz absorbance and hole shapes. The positions of samples in three-dimensional spaces for three principal components are used to determine the differences among diverse hole shapes and the homogeneity of similar shapes. In addition, a new Si wafer with the unknown hole shapes, including triangular, circular, and square, can be qualitatively identified by combining THz-TDS and PCA. Therefore, the combination of THz-TDS with mathematical statistical methods can serve as an effective approach to the rapid identification of micro-hole shapes in oil-gas reservoirs.

关键词: hole shapes, oil-gas reservoirs, THz-TDS, PCA

Abstract: Detecting holes in oil-gas reservoirs is vital to the evaluation of reservoir potential. The main objective of this study is to demonstrate the feasibility of identifying general micro-hole shapes, including triangular, circular, and square shapes, in oil-gas reservoirs by adopting terahertz time-domain spectroscopy (THz-TDS). We evaluate the THz absorption responses of punched silicon (Si) wafers having micro-holes with sizes of 20 μm-500 μm. Principal component analysis (PCA) is used to establish a model between THz absorbance and hole shapes. The positions of samples in three-dimensional spaces for three principal components are used to determine the differences among diverse hole shapes and the homogeneity of similar shapes. In addition, a new Si wafer with the unknown hole shapes, including triangular, circular, and square, can be qualitatively identified by combining THz-TDS and PCA. Therefore, the combination of THz-TDS with mathematical statistical methods can serve as an effective approach to the rapid identification of micro-hole shapes in oil-gas reservoirs.

Key words: hole shapes, oil-gas reservoirs, THz-TDS, PCA

中图分类号:  (General statistical methods)

  • 02.70.Rr
78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)) 78.30.Jw (Organic compounds, polymers)