Hydro-splitting of coal seams for their effective degassing preparation through underground wells

The article is devoted to the issues of improving the complex technology of coal seam degassing based on its hydrodynamic treatment. The possible modes of implementation of the introduction of working fluid into the coal seam in the process of its injection through wells drilled from preparatory workings and specially sealed to a certain depth, which ensures minimization of breaks of working fluid into the mine. Studies have been carried out to optimize the main parameters of hydrodynamic effects. Rational values of the effective well length and injection volume are established. The expediency of achieving significant rates of injection of the working agent into the formation for the disclosure of natural systems of cracks in it is shown. The directions of increasing the efficiency of formation degassing are investigated. The effectiveness of the integrated reservoir degassing technology was evaluated based on the factors of increasing methane production from underground reservoir degassing wells drilled into the zone of influence of underground hydraulic fracturing wells, and the total methane removal over the entire period of reservoir degassing. The efficiency of improved technology of hydraulic fracturing in underground mining for factors reducing downtime pollution control equipment, gazoobilnosti stope and the productivity of coal mining in zones of intensive integrated reservoir degassing.

Keywords: reservoir degassing, improved integrated technology, improvement of hydrodynamic impact on the coal seam, effective parameters of underground hydraulic fracturing, mechanism for reducing the methane content of mine workings, methane production and removal, reducing gas content, blocking methane, increasing the residual gas content, methods of gas release intensification, technical and economic assessment of the developed technology.
For citation:

Slastunov S.V., Ponizov A.V., Sadov A.P., Khautiev A.M.-B. Hydro-splitting of coal seams for their effective degassing preparation through underground wells. MIAB. Mining Inf. Anal. Bull. 2020;(6-1):15-25. [In Russ]. DOI: 10.25018/0236-1493-2020-61-0-15-25.

Acknowledgements:
Issue number: 6
Year: 2020
Page number: 15-25
ISBN: 0236-1493
UDK: 622.817.47
DOI: 10.25018/0236-1493-2020-61-0-15-25
Article receipt date: 11.03.2020
Date of review receipt: 06.04.2020
Date of the editorial board′s decision on the article′s publishing: 20.05.2020
About authors:

Slastunov S.V.1, prof., Dr. Sci. (Eng.), Professor of the Department of safety and ecology of mining production, e-mail: slastunovsv@mail.ru;
Ponizov A.V.2, Director of the mine. V.D. Yalevsky, e-mail: ponizovav@suek.ru;
Sadov A.P.2, Cand. Sci. (Eng.), Director of the methane degassing and utilization Department, e-mail: sadovap@suek.ru;
Khautiev A.M.-B.2, Cand. Sci. (Eng.), engineer-technologist of methane degassing and utilization Department, e-mail: khautievam@suek.ru
1 National university of science and technology «MISIS», Russia.
2 SUEK-Kuzbass company, Leninsk-Kuznetsky, Russia.

 

For contacts:
Bibliography:

1. Yutyaev E.P., Sadov A.P., Meshkov A.A. i dr. Estimation of coal filtration properties in thermodynamic tests of degassing formation wells. Ugol’, 2017. no. 11. pp. 24—29. [In Russ]

2. Patent RF «Sposob opredeleniya plastovogo davleniya metana i sorbcionnyh parametrov ugol’nogo plasta». Patent RF na izobretenie no. 2630343 ot 07.09.2017. [In Russ]

3. Hu C., Wu D. A novel gas drainage technology for lower protected coal seams: Application and verification in xinzhuangzi coal mine, huainan coalfield. IPPTA. Quarterly Journal of Indian Pulp and Paper Technical Association, 2018. no. 30(7). pp. 801—808.

4. Zhang L., Zhang H., Guo H. A case study of gas drainage to low permeability coal seam. International Journal of Mining Science and Technology, 2017. no. 27(4). pp. 687—692.

5. Szott W., Słota-ValimM., Gołąbek A., Sowiżdżał K. Numerical studies of improved methane drainage technologies by stimulating coal seams in multi-seam mining layouts. International Journal of Rock Mechanics and Mining Sciences, 2018. no. 108. pp. 157—168.

6. Kurlenya M.V., Serdyukov S.V., Shilova T.V., Patutin A.V. Procedure and equipment for sealing coal bed methane drainage holes by barrier shielding. Journal of Mining Science, 2015. no. 50(5). pp. 994—1000.

7. Instrukciya po degazacii ugol’nyh shaht [Instructions for degassing coal mines]. Rostekhnadzor. Moscow: ZAO NTP PB, 2012. 246 s. [In Russ]

8. Yutyaev E.P. Obosnovanie tekhnologii intensivno j podzemno j razrabotki vysokogazonosnyh ugol’nyh plastov [Substantiation of the technology of intensive underground mining of high-gas-bearing coal seams]. Diss. na soisk. uch. step. d-ra tekhn. nauk po special’nostyam 25.00.22 i 25.00.20. KuzGTU, 2019. 465 p. [In Russ]

9. Vremenno e rukovodstvo po zablagovremenno j podgotovke shahtnyh polej k effektivno j razrabotke skvazhinami s poverhnosti s pnevmogidrovozdejstviem na svitu ugol’nyh plastov [Temporary guidance on the advance preparation of mine fields for effective development of wells from the surface with pneumohydrovation on the formation of coal seams]. Moscow: MGI, 1991. 92 p. [In Russ]

10. Slastunov S.V., Meshkov A.A., Mazanik E.V., Komissarov I.A. Analysis of working fluid injection modes when applying underground hydraulic fracturing technology. MIAB. Mining Inf. Anal. Bull. no. 10, 2018. pp. 110—117. [In Russ]

11. Slastunov S.V., Yutyaev E.P., Mazanik E.V., Sadov A.P., Ponizov A,V. Mine tests of improved technology of underground reservoir degassing using hydraulic fracturing. Ugol’, 2016 no. 11. pp. 32—37. [In Russ]

12. Slastunov S.V., Yutyaev E.P., Mazanik E.V., Ermak G.P. Study of the effectiveness of improved technology of underground hydraulic fracturing of coal seam for its degassing. Gornyj zhurnal, 2018. no. 1. pp. 83—87. [In Russ]

13. Patent RF no. 2 659 298, 29.06.2018. Slastunov S.V., Karkashadze G.G., Kolikov K.S., Yutyaev E.P., Mazanik E.V., Sadov A.P., Ponizov A.V., Nikitin S.G. Sposob podgotovki gazonosnogo ugol’nogo plasta k otrabotke. Byul. no. 19 (73). [In Russ]

14. Sadov A.P. Povyshenie effektivnosti plastovoj degazacii na osnove ciklicheskih gidrodinamicheskih vozdejstvij na ugol’nye plasty [Improving the efficiency of reservoir degassing based on cyclic hydrodynamic effects on coal seams]. Diss. na soisk. uch. step. kand. tekhn. nauk po special’nosti 05.26.03. NITU «MISiS», 2017. 235 p. [In Russ]

15. Patent RF na izobretenie no. 2159333, 20.11.2000. Puchkov L.A., Slastunov S.V., Fejt G.N. Sposob degazacii ugol’nogo plasta. [In Russ]

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.