Filtration characteristics of nano-modified gels for hydraulic fracturing

The article reports preparation and modification of base hydraulic fracturing solutions with nano additives. The nano additives were spherical silicon nanoparticles (in the form of colloid solutions and dry powders), aluminum oxide powders and aluminum oxide nanofibers (Aluminan). For the first time, a systematic study is undertaken to investigate the influence of concentration, size, material and shape of nano additives on the filtration characteristics of cross-linked gels for hydraulic fracturing. The base gel was a typical fracturing composition— guar gum cross-linked by glycerin borax. The size of spherical nanoparticles ranged from 10 to 76 nm, and their mass concentration was varied from 0.01 to 0.4%. The research shows that addition of such nanoparticles leads to a drastic decrease in the gel filtration properties in the conditions of high pressures (more than by 10 times in some cases). The increase in the concentration of nano additives also reduces the filtration properties of hydraulic fracturing gels. The increase in the average size of nanoparticles intensifies the descending trend of the filtration properties. The decrease in the filtration properties can favor minimization of coal seam contamination and can reduce fracturing fluid loss.

Keywords: hydraulic fracturing fluid, cross-linker, nano-modified guar gel, nanoparticles, filtration losses, experiment, ceramic discs, press-filter.
For citation:

Minakov A. V., Lysakova E. I., Neverov A. L., Pryazhnikov M. I., Zhigarev V. A. Filtration characteristics of nano-modified gels for hydraulic fracturing. MIAB. Mining Inf. Anal. Bull. 2024;(11):50-63. [In Russ]. DOI: 10.25018/0236_1493_2024_11_0_50.

Acknowledgements:

The study was supported by the Russian Science Foundation, Grant No. 23-79-30022, https://rscf.ru/project/23-79-30022/.

Issue number: 11
Year: 2024
Page number: 50-63
ISBN: 0236-1493
UDK: 622.27
DOI: 10.25018/0236_1493_2024_11_0_50
Article receipt date: 22.03.2024
Date of review receipt: 03.07.2024
Date of the editorial board′s decision on the article′s publishing: 10.10.2024
About authors:

A.V. Minakov1, Dr. Sci. (Phys. Mathem.), Assistant Professor, e-mail: tov-andrey@yandex.ru, ORCID ID: 0000-0003-1956-5506,
E.I. Lysakova1, Cand. Sci. (Phys. Mathem.), Assistant Professor, e-mail: EMikhienkova@mail.ru,
A.L. Neverov1, Cand. Sci. (Eng.), Assistant Professor, e-mail: neveroff_man@mail.ru,
M.I. Pryazhnikov1, Researcher, e-mail: arrivent@yandex.ru,
V.A. Zhigarev1, Senior Lecturer, e-mail: zhigarev.vladimir@yandex.ru,
1 Siberian Federal University, 660074, Krasnoyarsk, Russia.

 

For contacts:

V.A. Zhigarev, e-mail: zhigarev.vladimir@yandex.ru.

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