Effection of Organic Acids on Sandstone Densification in Shanxi Formation Coal Source Rocks in Ordos Basin

DOI

10.2991/icmmct-18.2018.26How to use a DOI?

Keywords

coal source rock, organic acid, tight sandstone

Abstract

By means of core observation, conventional thin slice, cathodoluminescence, scanning electron microscopy, and basin simulation, the environment cause of the sandstone micropore in the reservoir were analysed, the organic fluid and the densification development of the reservoir were studied. The results show that the source rock of coal is dominated by III kerogen. In the process of thermal evolution, a large number of aryl structure and oxygen containing functional groups fall off, III kerogen generate more organic acids than ?...?,?...? kerogen, it have a stronger transformation effect on quartz sandstone. In the acidic micropore environment, quartz have multiple secondary enlargement and authigenic clay minerals occupied pores, the inorganic minerals ( such as feldspar, cuttings ) are dissolved. With the evolution of diagenesis, the pores are density , the organic acids in the source rocks of coal are the important reasons for the densification of sandstone.

Copyright

© 2018, 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  - Hua Zhang
PY  - 2018/06
DA  - 2018/06
TI  - Effection of Organic Acids on Sandstone Densification in Shanxi Formation Coal Source Rocks in Ordos Basin
BT  - Proceedings of the 2018 6th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2018)
PB  - Atlantis Press
SP  - 135
EP  - 140
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-18.2018.26
DO  - 10.2991/icmmct-18.2018.26
ID  - Zhang2018/06
ER  -