Determinating Effective Porosity by the Combination of Three-Dimensional Laser Scanning and Gas Displacement

Wei Yaqiang; Li Guomin; Dong Yanhui

Jul. 2015

Article Contents

Article Navigation > Bulletin of Geological Science and Technology > 2015 > 34(4): 212-216

Wei Yaqiang, Li Guomin, Dong Yanhui. Determinating Effective Porosity by the Combination of Three-Dimensional Laser Scanning and Gas Displacement[J]. Bulletin of Geological Science and Technology, 2015, 34(4): 212-216.

Citation:

Wei Yaqiang, Li Guomin, Dong Yanhui. Determinating Effective Porosity by the Combination of Three-Dimensional Laser Scanning and Gas Displacement[J]. Bulletin of Geological Science and Technology, 2015, 34(4): 212-216.

Citation:

PDF( 1166 KB)

Determinating Effective Porosity by the Combination of Three-Dimensional Laser Scanning and Gas Displacement

Wei Yaqiang^1,2,3,
Li Guomin^{2,3
,
,},
Dong Yanhui^2,3

1. College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
2. Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China;
3. Key Laboratory of Shale Gas and Geoengineering, Chinese Academy of Science, Beijing 100029, China

Received Date: 05 Nov 2014
Available Online: 27 May 2023

Abstract

Abstract

The effective porosity has an important significance for the study of porous media liquid.Therefore,in order to determinate it,it is particularly important to explore new accurate methods.An approach of calculating effective porosity by the combination of three-dimensional laser scanning and gas displacement method(3DLS-GD)was proposed in this research.The volume of the core can be obtained through3 DLS,and the effective porosity can be acquired by utilizing Helium displacement method.Experiments show that volume calculated by 3DLS is more accurate than the default volume,and it can reduce the error of 3.92%.Scanned volume and surface area increase with the enlargement of the scanning resolution.The effective porosity calculated by 3DLS-GD method is closer to the actual situation than the results calculated by default volume,and it can reduce the error of 16.550 3%,43.232 6%in sand samples.
- three-dimensional laser scanning,
- gas displacement method,
- 3DLS-GD method,
- effective porosity