Effect of Carbon Dioxide on the Properties and Chemical Composition of Bentonite in Aqueous Suspension

DOI

10.2991/isees-18.2018.59How to use a DOI?

Keywords

- bentonite, sedimentation, swelling, carbonated dispertion medium, particles' sizes

Abstract

In the process of using drilling muds in the oil and gas reservoirs, bentonite clay accumulates, which precludes their development, if not swelling it with carbon dioxide. The objection of this paper is to present the results of the sedimentation study and the degree of bentonite swelling depending on time for suspensions with different water concentrations of solid phase and carbon dioxide. If carbon dioxide gas is introduced into the dispersion medium, 0.12% of the weight, sedimentation is completed within the first 2-3 hours with a lower value of swelling degree. Precipitates obtained in samples with gas have particle sizes and chemical composition significantly different from the reference variant. It is found that in suspensions of bentonite with carbon dioxide the concentration of silicon in the sediment decreases to 10%, which is explained by its transfer to the dispersion medium in amorphous form.

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  - V. Kh. Mezhidov
AU  - R.H. Dadashev
AU  - Z.Sh. Gatsaev
AU  - I.G Gayrabekov
PY  - 2018/12
DA  - 2018/12
TI  - Effect of Carbon Dioxide on the Properties and Chemical Composition of Bentonite in Aqueous Suspension
BT  - Proceedings of the International Symposium “Engineering and Earth Sciences: Applied and Fundamental Research” (ISEES 2018)
PB  - Atlantis Press
SP  - 307
EP  - 310
SN  - 2352-5401
UR  - https://doi.org/10.2991/isees-18.2018.59
DO  - 10.2991/isees-18.2018.59
ID  - Mezhidov2018/12
ER  -