Journal of Jilin University(Earth Science Edition) ›› 2017, Vol. 47 ›› Issue (6): 1904-1912.doi: 10.13278/j.cnki.jjuese.201706307

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Construction of Multi-Scale and -Component Digital Cores Based on Fusion of Different Resolution Core Images

Cui Likai1, Sun Jianmeng1, Yan Weichao1, Gao Yinshan2, Wang Hongjun2, Song Liyuan3   

  1. 1. School of Geosciences, China University of Petroleum, Qingdao 266580, Shandong, China;
    2. No.5 Oil Production Plant, Changqing Oilfield Company, PetroChina, Xi'an 710200, China;
    3. No.8 Oil Production Plant, Changqing Oilfield Company, PetroChina, Xi'an 710021, China
  • Received:2017-03-07 Online:2017-11-26 Published:2017-11-26
  • Supported by:
    Supported by National Natural Science Foundation of China (41374124, 41574122) and Major Project of National Science and Technology (2016ZX05006002-004)

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Abstract: It is difficult to represent the multi-scale structure feature of rocks by using a single resolution digital core model. Through taking a sandstone sample, by means of core multi-resolution CT imaging,the accurate matching of core images with different resolutions is realized by the feature based image registration method. The multi-scale and -component digital core model is constructed along with the segmentation of pores and minerals in the registered images based on image fusion. The results show that the multi-scale and -component digital core model could represent the cross scale pore structures; and the pore distribution agrees with the results from NMR. The mineral contents of digital core are more consistent with the results from XRD than that from Qemscan. The multi-scale and -component digital core model factually restores the structure features of all rock components.

Key words: image registration, digital core, multi-scale, multi-component

CLC Number: 

  • P313.1
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