Improvement of pre-drainage technology based on hydraulic dissection of coal beds

The article describes implementation of integrated hydraulic fracturing in Boldyrev coal bed in extraction panels assigned for development in the nearest future and now subjected to pre-drainage before basic drainage period of not longer than 1–2 years in Kirov Mine. Boreholes drilled from ground surface are mostly used to stimulate coal bed permeability and to create conditions for enhanced methane recovery using the in-situ drainage boreholes which operate effectively under conditions of stimulated gas permeability of coal beds. We studied recoverability of water from coal bed after hydraulic fracturing by means of water discharge to nearby roadways. At the early research stage, in Kirov Mine field, we tested the pre-drainage technology for the first time in Kuzbass, determined its working capacity and estimated potential efficiency. The main processes of preparation and implementation of coal bed pre-treatment by the proposed pre-mining drainage technology using boreholes drilled from ground surface are described. Efficiency of the integrated coal bed drainage technology implemented during longwall mining is evaluated by the factors of absolute and relative gas contents in face areas, longwall downtimes due to critical gas criterion and by coal production rate.

Keywords: hydraulic dissection of coal beds, pre-drainage in surface boreholes, integrated insitu drainage, reduction in absolute and relative gas contents of face area, longwall downtime due to critical gas criterion, underground coal mining productivity improvement.
For citation:

Slastunov S. V., Kolikov K. S., Meshkov A. A., Sadov A. P., Khautiev A. M.-B. Improvement of pre-drainage technology based on hydraulic dissection of coal beds. MIAB. Mining Inf. Anal. Bull. 2021;(6):34-45. [In Russ]. DOI: 10.25018/0236_1493_2021_6_0_34.

Acknowledgements:
Issue number: 6
Year: 2021
Page number: 34-45
ISBN: 0236-1493
UDK: 622.817.47
DOI: 10.25018/0236_1493_2021_6_0_34
Article receipt date: 30.01.2021
Date of review receipt: 04.04.2021
Date of the editorial board′s decision on the article′s publishing: 10.05.2021
About authors:

S.V. Slastunov1, Dr. Sci. (Eng.), Professor, e-mail: slastunovsv@mail.ru,
K.S. Kolikov1, Dr. Sci. (Eng.), Head of Chair, e-mail: kolikovks@mail.ru,
A.A. Meshkov2, Cand. Sci. (Eng.), General Director,
A.P. Sadov2, Cand. Sci. (Eng.), Director of Department of Methane Degassing and Utilization, e-mail: Sadovap@suek.ru,
A.M.-B. Khautiev2, Cand. Sci. (Eng.), Engineer-Technologist, Department of Methane Degassing and Utilization, e-mail: khautievam@suek.ru,
1 Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia.
2 SUEK-Kuzbass JSC, Leninsk-Kuznetsky, Russia.

 

For contacts:

K.S. Kolikov, e-mail: kolikovks@mail.ru.

Bibliography:

1. Yutyaev E. P. Obosnovanie tekhnologii intensivnoy podzemnoy razrabotki vysokogazonosnykh ugol'nykh plastov [Substantiation of the technology of intensive underground mining of high-gas-bearing coal seams], Doctor’s thesis, Kemerovo, KuzGTU, 2019, 343 p.

2. Instruktsiya po degazatsii ugol'nykh shakht [Instructions for degassing coal mines], Moscow, OAO «NTTS «Promyshlennaya bezopasnost'», 2013, 255 p.

3. Slastunov S. V., Mazanik E. V., Sadov A. P., Khautiev A. M.-B. Testing of integrated degasifying treatment technology based on hydraulic splitting of coal seam using surface holes. MIAB. Mining Inf. Anal. Bull. 2020, no. 2, pp. 58–70. [In Russ]. DOI: 10.25018/0236-1493-2020-2-058-70.

4. Slastunov S. V., Karkashadze G. G., Kolikov K. S., Yutyaev E. P., Mazanik E. V., Sadov A. P., Ponizov A. V., Nikitin S. G. Patent RU 2 659 298. 29.06.2018.

5. Slastunov S. V., Yutyaev E. P., Mazanik E. V., Sadov A. P., Ponizov A. P. Ensuring methane safety of mines based on deep degassing of coal seams during their preparation for intensive development. Ugol'. 2019, no. 7, pp. 42—47. [In Russ].

6. Naik S., Yang S., Bedrikovetsky P., Woolley M. Analytical modelling of the water block phenomenon in hydraulically fractured wells. Journal of Natural Gas Science and Engineering. 2019, vol. 67, pp. 56—70.

7. Burlutskii E. An assessment of the effectiveness of the analytical methods to fracture propagation control using accurate mathematical modelling. Journal of Natural Gas Science and Engineering. 2019, vol. 62, pp. 294—301.

8. Sampath K. H. S. M., Perera M. S. A., Ranjith P. G. Theoretical overview of hydraulic fracturing break-down pressure. Journal of Natural Gas Science and Engineering. 2018, vol. 58, pp. 251—265.

9. Zheltov Yu. P., Khristianovich S. A. On hydraulic fracturing of oil-bearing silt. Izvestiya Akademii nauk SSSR. Otdelenie tekhnicheskikh nauk. 1955, no. 5, pp. 3—41.

11. Nozhkin N. V. Zablagovremennaya degazatsiya ugol'nykh mestorozhdeniy [Pre-term degassing of coal deposits], Moscow, Nedra, 1979.

12. Chernov O. I., Cherkasov V. S., Gorbachev A. G. Dvizhenie zhidkosti v ugol'nykh plastakh [Fluid motion in coal seams], Novosibirsk, Nauka, 1981.

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