Науковий вісник НГУ

Estimation of promising areas with the aim of methane accumulations exploration (on the example of mine “Butovska”)

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Category: Geology

Last Updated on 16 May 2013

Published on 15 November 2012

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Authors:

V.V. Lukinov, Dr. Sci. (Geol.-Min.), Professor, N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Deputy Director for Science of IGTM NAS of Ukraine, Dnipropetrovsk, Ukraine

K.A. Bezruchko, Cand. Sci. (Geol.-Min.), Senior Research Fellow, N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Senior Research Fellow, Dnipropetrovsk, Ukraine

O.V. Prikhodchenko, N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Chief Engineer, Dnipropetrovsk, Ukraine

V.Yu. Shpak, State Enterprise “Makiivvugillia”, Chief Geologist, Makiivka, Ukraine

Abstract:

Purpose. To estimate reasonability of free methane accumulations prospecting at mine “Butovska” owned by State Enterprise “Makiivvuhillia”.

Methodology. The research was carried out by means of mapping of local structures by method of trend analysis. Two local anticline structures (eastern and western) can be traced on a map of local structures according to the seam hypsometry deviation from the approximating surface. By the main structure parameters (amplitude and width) and thickness of sandstones calculations of relative linear deformation and relative volumetric deformation for the eastern and western local anticline structures were performed.

Findings. Based on the data and mean value of the ratio of open porosity calculation of crack porosity, absolute gas permeability, the ratio of effective porosity and minimum relative gas saturation was carried out. In local anticline structures in the field of mine “Butovska” at a depth of up to 1,000–1,100 m above the coal seam n1 possible presence of crack-pore reservoirs had been established.

Originality. Methods of predictive estimation of local anticline structures in coal-bearing series for availability of gas deposits were suggested. Perspective areas for production of associated methane were selected in mine “Butovska”.

Practical value. Expected reserves of methane in areas of potential accumulation of free methane were estimated. Gas emission happened on December 23, 2008 from sandstone n1Sn11 confirmed the presence of gas accumulations. Gas emission was observed for a long time and total flow of methane exceeded 650,000 m3.

References:

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Lukinov, V.V. (2007), “Mining and geological terms of formation of accumulations of free methane in coal deposits”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.4, pp. 55–59.

2. Скупчення вільного метану у непорушеному вуглепородному масиві. Методика прогнозування зон та визначення їх параметрів: СОУ 10.1.05411357.004: 2005.– К.: Мінвуглепром України, 2005– 12 с.– (Нормативний документ Мінвуглепрома України)

Accumulations of free methane in an undisturbed coal rock massive. Method of prognostication of areas and determination of their parameters (2005): SOU 10.1.05411357.004:2005. Ministry of Coal Industry of Ukraine, (Normative Document of Ministry of Coal Industry of Ukraine)

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Bezruchko, K.A. (2008), “Estimation of rocks porosity in the local anticline structures”, Geotekhnicheskaya mekhanika, published by IGTM NAS of Ukraine, no.80, pp. 77–83.

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Bezruchko, K.A. (2008), “Change of rocks gas content in the volume expansion zones of a rock massif”, Geotekhnicheskaya mekhanika, published by IGTM NAS of Ukraine, no.73, pp. 220–223.

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Lukinov, V.V. and Bezruchko, K.A. (2009), “Formation of rocks permeability in local anticline structures”, Scientific proceedings of UkrSGRI, no.1–2, pp. 106–110.

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