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: Geological sciences

Last Updated on Thursday, 16 May 2013 10:00

Published on Thursday, 15 November 2012 14:04

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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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