Quantitative characterization and characteristics analysis of microscopic pore structure in natural gas hydrate based on CT scanning

被引：9

作者：

Dong H. ^{[1
,2
]}

Sun J. ^{[1
,2
]}

Lin Z. ^{[3
,4
]}

Cui L. ^{[1
,2
]}

Yan W. ^{[1
,2
]}

机构：

[1] School of Geosciences in China University of Petroleum(East China), Qingdao

[2] Laboratory for Marine Mineral Resources, Pilot National Laboratory for Marine Science and Technology, Qingdao

[3] Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan

[4] Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Science, Langfang

来源：

Sun, Jianmeng (sunjm@upc.edu.cn) | 2018年 / University of Petroleum, China卷 / 42期

关键词：

3D imaging; Digital core; Microscopic pore structure; Natural gas hydrate reservoir; Pore network model; Quantitative characterization;

D O I：

10.3969/j.issn.1673-5005.2018.06.005

中图分类号：

学科分类号：

摘要：

The core samples of a hydrate reservoir in Muli area, Qilian Mountain were scanned and imaged using CT technology to construct a three dimensional digital core model. The corresponding pore network model was extracted and dimensional display was realized by using the maximum sphere algorithm. Numerical simulationswere applied to the acquisition of pore structure parameters toquantify the characteristics of reservoir microscopic pore structure. In addition, we analyzed the correlation between the parameters of different pore throats and the physical properties of the reservoir. The results show that, the physical properties of the hydrate reservoirs in the study area are poor with small pore throat radius; the reservoir space is mainly composed of intra-particles, inter-particle dissolved pores and micro-cracks with some primary pores; micro pore throat parameters have controls on permeability, but have less effect on porosity. © 2018, Periodical Office of China University of Petroleum. All right reserved.

引用

页码：40 / 49

页数：9

共 28 条

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