Back to search

Repair of polymeric flow casing strings in in-situ leach boreholes in permafrost rock mass

In-situ leach of metals in Russia is carried out in severe natural and climatic conditions similar to the conditions of the Extreme North, at the possible temperature differences of 20 °С per day. Such circumstances increase the probability of mechanical damages in flow strings made of polymeric materials, which results in instable operation of boreholes with the preset functional specifications. The main mechanical damages are the disruption of threaded couplings and failure of the components of flow strings. As a result, process solutions flow to the hole clearance in injection holes and behind-the-casing fluids flow to the flow string, which deteriorates the process solutions in pumping-out holes. In connection with this, the methods of sealing restoration in polymeric casing strings are developed for the injection and pumping-out holes. The relevant sealers, their formulations and usage procedures are described. The physical and mechanical properties of sealing materials for the unsafe sites of the flow strings and the tools to bring the sealers to a target point in the hole are listed. From the implemented research, it is concluded on the efficiency of the proposed methods of repair-and-renewal operations.

Keywords: polymeric casing string repair, single-phase water-hardening resin, fly ash, cryolite, work data interpretation.
For citation:

Ivanov A. G., Gladyshev A. V., Arsentiev Yu. A., Nazarov A. P., Ivanov D. A. Repair of polymeric flow casing strings in in-situ leach boreholes in permafrost rock mass. MIAB. Mining Inf. Anal. Bull. 2024;(2):51-62. [In Russ]. DOI: 10.25018/0236_1493_2024_2_0_51.

Issue number: 2
Year: 2024
Page number: 51-62
ISBN: 0236-1493
UDK: 622.23.05
DOI: 10.25018/0236_1493_2024_2_0_51
Article receipt date: 06.07.2023
Date of review receipt: 14.08.2023
Date of the editorial board′s decision on the article′s publishing: 10.01.2024
About authors:

A.G. Ivanov1, Cand. Sci. (Eng.), Chief Specialist, e-mail:,
A.V. Gladyshev1, General Director, e-mail: Gladу,
Yu.A. Arsentiev2, Cand. Sci. (Eng.), Assistant Professor, e-mail:,
A.P. Nazarov2, Cand. Sci. (Eng.), Assistant Professor, e-mail:,
D.A. Ivanov, Drilling Engineer, Weatherford Company, Moscow, Russia,
1 JSC «Leading Design and Survey and Research Institute of Industrial Technology», 115409, Moscow, Russia,
2 Sergo Ordzhonikidzе Russian State Geological Prospecting University (MGRI-RSGPU), 117997, Moscow, Russia.


For contacts:

Yu.A. Arsentiev, e-mail:


1. Dobycha urana metodom podzemnogo vyshchelachivaniya v kriolitozone. Monografiya. Pod red. I. N. Solodova [Uranium mining by the method of in-situ leaching in the cryolithic zone, Monograph. Solodov I. N. (Ed.)], Мoscow, ZetaPrint, 2022, 183 p.

2. Yipeng Zhou, Guangrong Li, Lingling Xu, Jinhui Liu, Zhanxue Sun, Weijun Shi Uranium recovery from sandstone-type uranium deposit by acid in-situ leachingan example from the Kujieertai. Hydrometallurgy. 2020, vol. 191, pp. 17—25.

3. Geotekhnologiya urana (rossiyskiy opyt): Monografiya. Pod red. I. N. Solodova, E. N. Kamneva. Monografiya [Uranium geotechnology (Russian experience), Monograph. Solodov I. N., Kamnev E. N. (Eds.)], Мoscow, 2017, 576 p.

4. Dedan Duan Haibin Wu, Fang Wei, Huiping Song, Zhibin Ma, Zhang Chen, Fangqin Cheng Preparation, characterization, and rheological analysis of eco-friendly geopolymer grouting cementitious materials based on industrial solid wastes. Journal of Building Engineering. 2023, vol. 78, pp. 92—113.

5. Li Li,Yu-jie Wei, Zongli Li, Muhammad Usman Farooqi Rheological and viscoelastic characterizations of fly ash/slag/silica fume-based geopolymer. Journal of Cleaner Production. 2022, vol. 354, pp. 48—52.

6. ArsentievYu. A., Nazarov A. P., ZabaykinYu. V., Ivanov A. G. On the calculation of operational columns made of polymer materials for permafrost conditions. Actual problems and prospects of economic development: Russian and foreign experience. 2019, no. 21, pp. 27—32. [In Russ].

7. Ivanov A. G., Solodov I. N. The choice of casing pipe material for the equipment of production wells of underground leaching. Gornyi Zhurnal. 2017, no. 7, pp. 81—85. [In Russ].

8. Ivanov D. A., Arsentiev Yu. A., Solovyov N. V., Ivanov A. G., Barashkov V. A., Bashkatov I. A. On the results of studies of the properties of bitumen-oil mixtures for the backfill repair of threaded connections of polymer pipes of technological wells of underground leaching (SPV) uranium. Prospect and protection of mineral resources. 2021, no. 4, pp. 40—43. [In Russ].

9. Ivanov A. G., Mikhailov A. N., Alekseev N. A., Ivanov D. A., Arsentiev Y. A., Soloviev N. V., Nazarov A. P. Special works for the restoration and maintenance of the working condition of the production column of technological wells. Prospect and protection of mineral resources. 2020, no. 8, pp. 40—45. [In Russ].

10. Glukhov A. V., Ermolenko S. I., Ivanov A. G., Ivanov D. A. Patent RU 2726086, 09.07.2020. [In Russ].

11. Altunina L. K., Kuvshinov V. A., Dolgikh S. N. Cryogels for grouting works in areas of permafrost distribution. The Hydrotechnika. 2010, no. 3, pp. 56—60. [In Russ].

12. Klochkov Ya. V., Nepomnyashchikh E. V. Measures to improve the water-thermal regime of drainage structures. Transbaikal state university journal. 2014, no. 12 (115), pp. 12—21. [In Russ].

13. Manzhai V. N., Fufaeva M. S. Properties of cryogels and their application in oil production and transportation technologies. Izvestiya vysshikh uchebnykh zavedenii. Neft' i Gaz. 2011, no. 6, pp. 102—107. [In Russ].

14. Kokhanovskaya O. A., Razdyakonova G. I., Altunina L. K., Likholobov V. A. Composite cryogels — new structural materials for the development of the Arctic. Novye materialy i tekhnologii v usloviyakh Arktiki [New materials and technologies in the Arctic], Stavropol, 2014, pp. 322—327.

15. Rogozhin S. V., Lozinsky V. I., Vainerman E. S., Domotenko L. V., Mantzans A. M., Ivanova S. A., Shtilman M. I., Korshak V. I. Non-covalent cryostructuring in polymer systems. Doklady Akademii nauk SSSR. 1984, vol. 278, pp. 129—134. [In Russ].

16. Lozinsky V. N., Domoteeva L. V., Vainerman E. S., Rogozhkin S. V. Some thermomechanical properties of polyvinyl alcohol cryogels. Polymer Science. 1989, vol. 31 А, no. 9, pp. 1805—1809. [In Russ].

17. Lozinsky V. I. Cryotropic gelation of polyvinyl alcohol solutions. Russian Chemical Reviews. 1998, vol. 67, no. 7, pp. 641—655. [In Russ]. DOI: 10.1070/RC1998v067n07ABEH000399.

18. Vainerman E. S., Lozinsky V. I., Stoyachenko I. A., Rogozhkin S. V. Cryogels of natural and synthetic polymers. Preparation and properties. Mezhvuzovskiy nauchnyy sbornik «Protsessy studneobrazovaniya v polimernykh sistemakh». Ch. 2 [Interuniversity scientific collection «Processes of studne formation in polymer systems». Part 2], Saratov, 1985, pp. 20.

Our partners

Подписка на рассылку

Раз в месяц Вы будете получать информацию о новом номере журнала, новых книгах издательства, а также о конференциях, форумах и других профессиональных мероприятиях.