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About extraction of methane and slate gas from coal and slate deposits

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Category: Mining

Last Updated on 16 May 2013

Published on 15 November 2012

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Authors:

N.M. Tabachenko, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Professor of the Department of Underground Mining, Dnipropetrovsk, Ukraine

R.Ye. Dychkovskiy, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Senior Lecturer of the Department of Underground Mining, Dnipropetrovsk, Ukraine

V.S. Falshtynskiy, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Senior Lecturer of the Department of Underground Mining, Dnipropetrovsk, Ukraine

Abstract:

The solution of the problem of the mining boreholes productivity increase is very urgent for gaseous fuel extraction from coal and slate deposits as it may help to produce greater volume of methane from a production unit.

Purpose. To estimate the parameters of the combustible gases extraction technology based on change of temperature modes of gasification process.

Methodology. Analysis of existing experience of associated gas production, determination of the research guidelines, substantiation of the technological process parameters, determination of the material thermal balance of gasification, designing of the schemes and flowsheets of underground gas generator have been carried out.

Findings. Characteristics of different zones of a coal seam appearing during frac job has been determined and reasonability of preliminary degassing of underground gas generator has been substantiated.

Originality. The character of the gasification thermal processes behavior in the conditions of high interference of hard fuel layers and new values of pressure change in hydraulic fracturing dependence on the mining-and-geological parameters of rock massif.

Practical value. The principle network of gaseous fuel production from coal and slate deposits has been improved and the operation modes of underground gas generator have been developed.

References:

1. Николин В.И. Прогнозирование и устранение выбросоопасности при разработке угольных месторождений / Николин В.И, Васильчук М.П. – Липецк: Роскомпечать, 1997. – 494 с.

Nikolin, V.I. and Vasilchuk, M.P. (1997), Prognozirovaniye i ustraneniye vybrosoopasnosti pri razrabotke ugolnykh mestorozhdeniy [Prognostication and Removal of Outburst Hazard at Coal Reserves Extraction], Roskompechat, Lipetsk, Russia.

2. Табаченко Н.М. Способ подземной газификации твердого топлива / Табаченко Н.М., Дичковский Р.Е., Фальштынский В.С. / Патент Украины №20117 от 15.09.2000. Е 21 В 43/295, бюл. №4 от 15.02.2000.

Tabachenko, N.M., Dychkovskiy, R.Ye. and Falshtynskiy, V.S. “Underground coal gasification of hard fuel”, Patent of Ukraine №20117 on September 15, 2000. E 21 B 43/295, bulletin no.4 dated February 15, 2000.

3. Теория и практика термохимической технологии добычи и переработки угля / [О.В. Колоколов, Н.М. Табаченко, А.М. Ейшинский и др.] – Днепропетровск: НГА Украины, 2000. – 281с.

Kolokolov, O.V., Tabachenko, N.M. and Yeyshinskiy, A.M. (2000), Teoria i praktika termokhimicheskoy tekhnologii dobychi uglya [Theory and Practice of Thermochemical Technology of Coal Mining and Processing], National Mining Academy, Dnepropetrovsk, Ukraine.

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