Effect of time-transgressive faults upon methane distribution within coal seams

Authors:

V.F. Prykhodchenko, Dr. Sci. (Geol.), Professor, State Higher Educational Institution “National Mining University”, Head of the Department of Geology and Mineral Prospecting, Dean of the Faculty of Geological Prospecting, Dnipropetrovsk, Ukraine.

О. О. Sdvyzhkova, Dr. Sci. (Tech.), Professor, State Higher Educational Institution “National Mining University”, Head of the Department of Higher Mathematics, Dnipropetrovsk, Ukraine.

N.V. Khomenko, State Higher Educational Institution “National Mining University”, Assistant Lecturer of the Department of Geology and Mineral Prospecting, Dnipropetrovsk, Ukraine.

V.V. Tykhonenko, State Higher Educational Institution “National Mining University”, Lecturer of the Department of Foreign Languages, Dnipropetrovsk, Ukraine.

Abstract:

Problem solution of efficient methane extraction in coal deposits depends on analysis of their distribution conditions within coal-bearing thickness. Tectonic structure is the most important factor of methane redistribution and retaining within coal-bearing thickness in terms of Western Donbas.

Purpose. To determine the effect of tectonic faults of various types and occurrence period upon methane redistribution for the purpose of its efficient extraction.

Methodology. Collection, analysis, and generalization of the measuring results of coal seam gas bearing capacity in geological prospecting wells using КА-61core extractor as well as mapping of gas bearing capacity and its derivatives using approximation polynom of three initial stages within the walls of tectonic faults of various types with their following analysis were the methodological basis for the study.

Findings. Methane-bearing characteristics of coal seams within the walls of high-amplitude, consedimental, medium-am-plitude postsedimental and low-amplitude fault have been analyzed. Maps of local gas-bearing capacity deviations have been developed to demonstrate the effect of these tectonic faults upon localization of methane accumulations.

Originality. Effect of various faults as well as methane redistribution within coal seams of Western Donbas has been analyzed for the first time.

Practical value. The data of core extractor measuring can be used to analyze the effect of tectonic fault upon coal seam methane-bearing characteristics. The analysis of the developed maps in terms of undetermined fault type allows assuming the time of fault formation as well as the character of its effect upon methane redistribution. 

References:

1. Nagorny, Yu.M. and Glazova, A.M., 2005. On the features of fault formation within Western Donbas. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 6, pp. 46-48.

Нагорний Ю.М. Про особливості формування розривів Західного Донбасу / Ю.М. Нагорний, А.М. Глазова // Науковий вісник НГУ. – Днепропетровск, 2005 − №6. – С.46−48.

2. Prykhodchenko, V.F., Nagorny, Yu.M., Khomenko, N.V. and Prykhodchenko, S.Yu., 2005. The influence of tectonic factors on gas-bearing of in Western Donbas. Geotekhnicheskaya Mekhanika, 34, pp. 164−166.

 

Вплив тектоніки на газоносність вугільних пластів у Західному Донбасі / В.Ф. Приходченко, Ю.М. Нагорний, Н.В. Хоменко, С.Ю. Приходченко // Геотехническая механика: межведомственный сборник научных трудов. – Днепропетровск, 2005. – Вып.34. – С. 164−166.

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