Abstract

Three-dimensional (3D) characterization of materials microstructure is important in understanding their physical and chemical properties. In this paper, the compositional microstructure of a sandstone sample from Yaodian area of Yan’an in Erdors Basin is analyzed using synchrotron-based multi-energy x-ray micro-CT data. The x-ray CT data of the sample are acquired at beam energies 25 KeV, 35 KeV and 45 KeV. The strip artifact in the sinogram images are corrected with a least square fitting method. The corrected sinogram image data are reconstructed with the X-tract software, and the reconstructed images under different energy spectra are calibrated. Finally, the multi-energy least square segmentation method is used to characterize the 3D microstructure of sandstone sample with the Data-Constrained Modeling (DCM) software. The results show that the sample has 71.8% of quartz and albite which is displayed as blue, calcite (22.3%) is displayed as red, pyrite (0.6%) is displayed as yellow and porosity (5.3%) is displayed as white.

Details

Title
Sandstone 3D compositional microstructure analysis with synchrotron-based multi-energy x-ray micro-CT
Author
Kong, Huihua 1   VIAFID ORCID Logo  ; Ruru Li 2 ; Yang, Yushuang 3 ; Bai, Bin 4 ; Wang, Haipeng 2   VIAFID ORCID Logo 

1  School of Science, North University of China, Taiyuan, 030051, People’s Republic of China 
2  College of Physics & Electronics Engineering, Shanxi University, Taiyuan, Shanxi 030006, People’s Republic of China 
3  CSIRO, Private Bag 10, Clayton, Victoria 3169, Australia 
4  Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, People’s Republic of China 
Publication year
2020
Publication date
Jun 2020
Publisher
IOP Publishing
e-ISSN
20531591
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/2053-1591/ab8c6d
ProQuest document ID
2583430149
Copyright
© 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.