AP08856422 – Development of an innovative technology for intensifying downhole uranium mining using a hydrodynamic decolmatization device in combination with a complex of multifunctional chemicals

The main objective of the project: To improve the efficiency of downhole mining of uranium ores via the innovative technology for the intensification of downhole uranium mining with the use of hydrodynamic decalmatation device in combination with a set of chemical reagents for multifunctional purposes.

The relevance of the project: Scientific Novelty of the Project consists in the establishment of the regularities of change of the properties and structure of sediments from the composition of chemical reagents of multifunctional purpose; substantiation of the rational parameters of the mechanical impact of the hydrodynamic decalmatation device, in conditions of the complex of chemical reagents for multifunctional purpose; creation of an innovative technology based on the combination of hydrodynamic decalmatation device and a complex of chemical reagents for multifunctional purpose.

Scientific adviser: Doctor of technical sciences, Professor, Rakishev Bayan

Results obtained: Within the research project, uranium deposit precipitates from the Syrdarya and Shu-Sarysu depressions were investigated, and their structure with a high gypsum content was determined. Effective chemical reagent compositions were selected for preventing and removing scaling during in-situ leaching of uranium. A hydrodynamic device based on a downhole screw motor was developed and adapted for well cleaning and removal of sand plugs. Field pilot tests at the “North Karamurun” deposit confirmed the effectiveness of the proposed solutions. The results showed a 20–30% increase in well productivity and a reduction of cleaning time to 8–12 hours. Scientific and methodological recommendations were developed to intensify uranium production under complex geological conditions. The obtained results demonstrate the technical and economic efficiency and practical significance of the developed technology.

List of publications with links to them

1. Rakishev B., Mataev M.M., Kenzhetayev Z., Altaybayev B., Shampikova A. Research into leaching of uranium from core samples in tubes using surfactants // Mining of Mineral Deposits. – 2020. – №4. – P. 97–104. – DOI: https://doi.org/10.33271/mining14.04.097
2. Rakishev B.R., Mataev M.M., Kenzhetayev Zh.S., Shampikova A.H., Toktaruly B. Innovative methods for intensifying borehole production of uranium in ores with low filtration characteristics // News of the National Academy of Sciences of the Republic of Kazakhstan. Series of Geology and Technical Sciences. – 2020. – №6(444). – P. 213–219. – DOI: https://doi.org/10.32014/2020.2518-170X.149
3. Rakishev B., Mataev M.M., Kenzhetayev Zh.S., Shampikova A.H. Способ скважинной добычи урана из карбонатных и низкопроницаемых руд: патент РК №5976 от 09.04.2021 г. – Бюл. №14.
4. Rakishev B.R., Yazikov E.G., Mataev M.M., Kenzhetayev Zh.S. Leaching of uranium from core samples in tubes using an oxidizer // Mining Journal. – 2021. – №9. – P. 84–89. – DOI: https://doi.org/10.17580/gzh.2021.09.14
5. Rakishev B., Kenzhetayev Z., Mataev M., Togizov K. Improving the efficiency of downhole uranium production using oxygen as an oxidizer // Minerals. – 2022. – Vol. 12. – Art. 1005. – DOI: https://doi.org/10.3390/min12081005
6. Rakishev B.R., Mataev M.M., Kenzhetayev Zh.S., Togizov K. Innovative methods for restoring filtration characteristics of borehole uranium ores in Kazakhstan’s fields // News of the National Academy of Sciences of the Republic of Kazakhstan. Series of Geology and Technical Sciences. – 2022. – №4(454). – P. 171–181. – DOI: https://doi.org/10.32014/2022.2518-170X.208
7. Rakishev B.R., Mataev M.M., Kenzhetayev Zh.S., Shampikova A.H. Innovative methods of intensification in situ leaching of uranium in deposits with low filtration characteristics of ores // News of the National Academy of Sciences of the Republic of Kazakhstan. Series of Geology and Technical Sciences. – 2022. – №5(455). – P. 188–206. – DOI: https://doi.org/10.32014/2518-170X_2022_5_455_188-206
8. Матаев М.М., Ракишев Б., Кенжетаев Ж.С. Передвижная установка гидродинамической обработки технологических скважин: патент РК №7324 от 05.08.2022 г. – Бюл. №31.
9. Алтынбек А.Д., Киякбай О.Б., Калмукамбетов А.О., Матаев М.М., Кенжетаев Ж.С. Способ интенсификации подземного скважинного выщелачивания урана: патент РК №35471 от 21.01.2022 г. – Бюл. №3.