Multi-scale characterization of pores in shale by nitrogen adsorption and high pressure mercury methods

DOI

10.2991/ifeesm-15.2015.60How to use a DOI?

Keywords

Liaohe Depression; Taiyuan Formation; shale; pore; high-pressure mercury injection; Nitrogen adsorption

Abstract

High pressure mercury and nitrogen adsorption had been conducted on outcrop and core samples for studying the pore structure characteristics about shale in eastern uplift of Liaohe depression. The results showed that: The pores mainly are nano-scale and irregular in size and arrangement. The nitrogen adsorption curves about shale are type II, and the adsorption loop can be divided into 3 types: type P1 represents the pores dominated by airtight pores with one end closed; type P2 demonstrates the pores dominated by ink-bottle pores and airtight pores with one end closed; type P3 represents the pores dominated by open pores and airtight pores with one end closed. The distribution of pores has two peaks that the pores’ average diameter is 4nm and 6 m respectively. The mesoporous and macroporous pore volume accounted for 85% of all, and they provide the main place for free gas. The surface area of mesopore and micropore accounted for 97.86% of all, and they enhance the adsorption capacity of shale.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaofei Jian
AU  - Renhe Liu
AU  - Shuheng Tang
AU  - Lingxiao Jia
AU  - Yuwan Wang
AU  - Yao Zhang
AU  - Di Xin
PY  - 2015/09
DA  - 2015/09
TI  - Multi-scale characterization of pores in shale by nitrogen adsorption and high pressure mercury methods
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 320
EP  - 326
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.60
DO  - 10.2991/ifeesm-15.2015.60
ID  - Jian2015/09
ER  -