SAFETY


Original Paper

UDC 622.245:539.3 V.I. Klishin, G.Yu. Opruk, S.V. Klishin, S.I. Svyazev, 2022

ISSN 0041-5790 (Print) ISSN 2412-8333 (Online) Ugol Russian Coal Journal, 2022, S12, pp. 16-22

DOI: http://dx.doi.org/10.18796/0041-5790-2022-S12-16-22

Title

INTERVAL HYDRAULIC FRACTURING OF A COAL SEAM TO INTENSIFY THE DEGASSING PROCESS

Authors

Klishin V.I.1, Opruk G.Yu.1, Klishin S.V.2, Svyazev S.I.1

1Coal Institute, Federal Research Center for Coal and Coal Chemistry of Siberian Branch of the Russian Academy of Sciences, Kemerovo, 650065,Russian Federation

2Mining Institute named after N.A. Chinakal of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630091,Russian Federation

Authors Information

Klishin V.I.,Doctor of Engineering Sciences, Professor, RAS Corresponding, Director, -mail: klishinvi@icc.kemsc.ru

Opruk G.Yu.,PhD (Engineering), Head of Efficient Coal Deposits Development Laboratory, -mail: opruk@yandex.ru

Klishin S.V.,PhD (Engineering),Senior researcher, -mail: sv.klishin@gmail.com

Svyazev S.I.,Senior engineer

Abstract

The paper discussed the method of interval hydraulic fracturing (IHF) of a coal seam from uncased boreholes to intensify the process of degassing. Technological schemes of its implementation in the production and development faces are provided. The results of numerical modeling of the stress-and-strain state of the rocks near the borehole where packer seals are installed using the finite element method are presented in the paper. The effect of the fracturing device parameters is determined, allowing to ensure the development of a transverse fracture in relation to the borehole axis due to tensile stresses in the rock mass.

Keywords

Underground mining, Degassing, Hydraulic fracturing, Fracturing device, Seal, Valve, Borehole, Numerical modeling, Finite element method, Contact problem.

References

1. Trubetskoy K.N., Ruban A.D., Viktorov S.D. et al. Fractal structure of hard coal disturbances and their susceptibility to gas-dynamic fracture. Doklady Akademii nauk, 2010, Vol. 431 (6), pp. 1-4. (In Russ.).

2. Trubetskoy K.N., Ruban A.D. & Zaburdyaev V.S. Methodology of justification methods and parameters of degassing in coal mines. Fiziko-tehnicheskie problemy razrabotki poleznyh iskopaemyh, 2011, (1), pp. 3-11. (In Russ.).

3. Ruban A.D., Zaburdyaev V.S., Zaburdyaev G.S. & Matveyenko N.G. Methane in coal and ore mines in the Russian Federation: forecast, extraction and utilization. Moscow, IPKON RAS Publ., 2006, 312 p. (In Russ.).

4. Nozhkin N.V. Advance degassing of coal deposits. Moscow, Nedra Publ., 1979, 271 p. (In Russ.).

5. Sergeyev I.V., Zaburdyaev V.S., Ayruni A.T. et al. Control of gas emissions in coal mines during the stoping operations. Moscow, Nedra Publ., 1992, 256 p. (In Russ.).

6. Slastunov S.V. Advance degassing and methane recovery from coal deposits. Moscow, MGGU Publ., 1996, 441 p. (In Russ.).

7. Malyshev Yu.N., Khudin Yu.L., Vasilchuk M.P. et al. Challenges in mining methane-bearing seams in the Kuznetsk coal basin. Moscow, Academy of Mining Sciences Publ., 1997, 463 p. (In Russ.).

8. Puchkov L.A., Slastunov S.V. & Fedunets B.I. Prospects for methane production in the Pechora coal basin. Moscow, MGGU Publ., 2004, 557 p. (In Russ.).

9. Sikora P., Smyslov D. & Pletner O. Specific features of advance degassing of coal seams by drilling boreholes from the day surface. Gluckauf, 2008, (1), pp. 39-45. (In Russ.).

10. Dugan T., Arnold E. GAS! Pages of the history of coal methane production in the San Juan basin. Moscow: CBM Partners Corporation, 2008. 208 p.

11. Remezov A.V. & Torro V.O. Analysis of development of technology and methods of directional drilling of degassing boreholes: vertical, inclined and horizontal. Vestnik Nauchnogo centra VostNII po promyshlennoj i ekologicheskoj bezopasnosti, 2019, (1), pp. 53-74. (In Russ.).

12. Shumilov V.A., Axelrod S.M. & Shumilov A.V. Geophysical well logging techniques in exploration and production of coal bed methane: a monograph. Perm, Perm State National Research University, 2014, 138 p. (In Russ.).

13. Parmuzin P.N. International experience in development of coal bed methane resources. Ukhta, Ukhta State Technical University, 2017, 109 p. (In Russ.).

14. Klishin V.I., Kokoulin D.I., Kubanychbek B. & Durnin M.K. Weakening of coal seams as a method to intensify methane release. Ugol, 2010, (4), pp. 40-42. Available at: http://www.ugolinfo.ru/Free/042010.pdf (accessed 15.11.2022). (In Russ.).

15. Klishin V.I., Opruk G.Y., Tatsienko A.L. Technology and means of a coal seam interval hydraulic fracturing for the seam degassing intensification. IOP Conference Series: Earth and Environmental Science. IOP Publishing, 2017, Vol. 53, (1), pp. 012019.

16. Jun F., Linming D., Hua H. et al. Directional hydraulic fracturing to control hard-roof rockburst in coal mines. International Journal of Mining Science and Technology, 2015, Vol. 22, (2), pp. 177181.

17. Deng J., Yang Q., Liu Y. et al. 3D finite element modeling of directional hydraulic fracturing based on deformation reinforcement theory. Computers and Geotechnics, 2018, (94), pp. 118133.

18. Kurlenya M.V., Serdyukov S.V., Patutin A.V. & Shilova T.V. Intensification of underground degassing of coal seams using hydraulic fracturing. Fiziko-tehnicheskie problemy razrabotki poleznykh iskopaemykh, 2017, (6), pp. 2-9. (In Russ.).

21. Guidelines for degassing coal mines. Series 05. Issue 22. Moscow, Scientific Technical Center of Industrial Safety Problems Research CJSC, 2012, 250 p. (In Russ.).

22. Cherniy S.G., Lapin V.N., Yesipov D.V. & Kuranakov D.S. Modelling methods of fracture initiation and propagation. Novosibirsk: Siberian Branch of the Russian Academy of Sciences Publ., 2016, 312 p. (In Russ.).

23. COMSOL Multiphysics Modeling Software. [Electronic resource]. Available at: https://www.comsol.com (accessed 15.11.2022).

Acknowledgements

The research was carried out as part of the Development and implementation of complex technologies in the areas of exploration and extraction of minerals, industrial safety, bioremediation, creation of new deep conversion products from coal raw materials while consistently reducing the environmental impact and risks to human life Integrated Scientific and Technical Programme of the Full Innovation Cycle, approved by Order No. 1144- of the Government of the Russian Federation dated May 11, 2022 (Agreement No. 075-15-2022-1191).

For citation

Klishin V.I., Opruk G.Yu., Klishin S.V. & Svyazev S.I. Intervalhydraulic fracturing of a coal seam to intensify the degassing process . Ugol, 2022, (S12), pp. 16-22. (In Russ.). DOI: 10.18796/0041-5790-2022-S12-16-22.

Paper info

Received November 1, 2022

Reviewed November 15, 2022

Accepted November 30, 2022